northamerica revision 240461
1153761Swollman# <pre> 2192886Sedwin# This file is in the public domain, so clarified as of 3192886Sedwin# 2009-05-17 by Arthur David Olson. 4153761Swollman 52742Swollman# also includes Central America and the Caribbean 62742Swollman 72742Swollman# This data is by no means authoritative; if you think you know better, 82742Swollman# go ahead and edit the file (and please send any changes to 92742Swollman# tz@elsie.nci.nih.gov for general use in the future). 102742Swollman 11149514Swollman# From Paul Eggert (1999-03-22): 122742Swollman# A reliable and entertaining source about time zones is 1358787Sru# Derek Howse, Greenwich time and longitude, Philip Wilson Publishers (1997). 142742Swollman 152742Swollman############################################################################### 162742Swollman 172742Swollman# United States 182742Swollman 1958787Sru# From Paul Eggert (1999-03-31): 2058787Sru# Howse writes (pp 121-125) that time zones were invented by 2158787Sru# Professor Charles Ferdinand Dowd (1825-1904), 2258787Sru# Principal of Temple Grove Ladies' Seminary (Saratoga Springs, NY). 2358787Sru# His pamphlet ``A System of National Time for Railroads'' (1870) 2458787Sru# was the result of his proposals at the Convention of Railroad Trunk Lines 2558787Sru# in New York City (1869-10). His 1870 proposal was based on Washington, DC, 2658787Sru# but in 1872-05 he moved the proposed origin to Greenwich. 2758787Sru# His proposal was adopted by the railroads on 1883-11-18 at 12:00, 2858787Sru# and the most of the country soon followed suit. 2958787Sru 30149514Swollman# From Paul Eggert (2005-04-16): 31149514Swollman# That 1883 transition occurred at 12:00 new time, not at 12:00 old time. 32149514Swollman# See p 46 of David Prerau, Seize the daylight, Thunder's Mouth Press (2005). 33149514Swollman 34158421Swollman# From Paul Eggert (2006-03-22): 3514343Swollman# A good source for time zone historical data in the US is 3614343Swollman# Thomas G. Shanks, The American Atlas (5th edition), 3714343Swollman# San Diego: ACS Publications, Inc. (1991). 3814343Swollman# Make sure you have the errata sheet; the book is somewhat useless without it. 39158421Swollman# It is the source for most of the pre-1991 US entries below. 4014343Swollman 4175267Swollman# From Paul Eggert (2001-03-06): 4217200Swollman# Daylight Saving Time was first suggested as a joke by Benjamin Franklin 4375267Swollman# in his whimsical essay ``An Economical Project for Diminishing the Cost 4475267Swollman# of Light'' published in the Journal de Paris (1784-04-26). 4517200Swollman# Not everyone is happy with the results: 4617200Swollman# 4717200Swollman# I don't really care how time is reckoned so long as there is some 4817200Swollman# agreement about it, but I object to being told that I am saving 4917200Swollman# daylight when my reason tells me that I am doing nothing of the kind. 5017200Swollman# I even object to the implication that I am wasting something 5117200Swollman# valuable if I stay in bed after the sun has risen. As an admirer 5217200Swollman# of moonlight I resent the bossy insistence of those who want to 5317200Swollman# reduce my time for enjoying it. At the back of the Daylight Saving 5417200Swollman# scheme I detect the bony, blue-fingered hand of Puritanism, eager 5517200Swollman# to push people into bed earlier, and get them up earlier, to make 5617200Swollman# them healthy, wealthy and wise in spite of themselves. 5717200Swollman# 58149514Swollman# -- Robertson Davies, The diary of Samuel Marchbanks, 59149514Swollman# Clarke, Irwin (1947), XIX, Sunday 6075267Swollman# 6175267Swollman# For more about the first ten years of DST in the United States, see 6275267Swollman# Robert Garland's <a href="http://www.clpgh.org/exhibit/dst.html"> 6375267Swollman# Ten years of daylight saving from the Pittsburgh standpoint 6475267Swollman# (Carnegie Library of Pittsburgh, 1927)</a>. 6575267Swollman# 6675267Swollman# Shanks says that DST was called "War Time" in the US in 1918 and 1919. 6775267Swollman# However, DST was imposed by the Standard Time Act of 1918, which 6875267Swollman# was the first nationwide legal time standard, and apparently 6975267Swollman# time was just called "Standard Time" or "Daylight Saving Time". 7017200Swollman 712742Swollman# From Arthur David Olson: 722742Swollman# US Daylight Saving Time ended on the last Sunday of *October* in 1974. 7319878Swollman# See, for example, the front page of the Saturday, 1974-10-26 7419878Swollman# and Sunday, 1974-10-27 editions of the Washington Post. 752742Swollman 762742Swollman# From Arthur David Olson: 772742Swollman# Before the Uniform Time Act of 1966 took effect in 1967, observance of 782742Swollman# Daylight Saving Time in the US was by local option, except during wartime. 792742Swollman 8067578Swollman# From Arthur David Olson (2000-09-25): 8167578Swollman# Last night I heard part of a rebroadcast of a 1945 Arch Oboler radio drama. 8267578Swollman# In the introduction, Oboler spoke of "Eastern Peace Time." 8367578Swollman# An AltaVista search turned up 8467578Swollman# <a href="http://rowayton.org/rhs/hstaug45.html">: 8567578Swollman# "When the time is announced over the radio now, it is 'Eastern Peace 8667578Swollman# Time' instead of the old familiar 'Eastern War Time.' Peace is wonderful." 8767578Swollman# </a> (August 1945) by way of confirmation. 8867578Swollman 89149514Swollman# From Joseph Gallant citing 9067578Swollman# George H. Douglas, _The Early Days of Radio Broadcasting_ (1987): 9167578Swollman# At 7 P.M. (Eastern War Time) [on 1945-08-14], the networks were set 9286222Swollman# to switch to London for Attlee's address, but the American people 9367578Swollman# never got to hear his speech live. According to one press account, 9467578Swollman# CBS' Bob Trout was first to announce the word of Japan's surrender, 9567578Swollman# but a few seconds later, NBC, ABC and Mutual also flashed the word 9667578Swollman# of surrender, all of whom interrupting the bells of Big Ben in 9786222Swollman# London which were to precede Mr. Attlee's speech. 9867578Swollman 99114173Swollman# From Paul Eggert (2003-02-09): It was Robert St John, not Bob Trout. From 100114173Swollman# Myrna Oliver's obituary of St John on page B16 of today's Los Angeles Times: 101114173Swollman# 102114173Swollman# ... a war-weary U.S. clung to radios, awaiting word of Japan's surrender. 103114173Swollman# Any announcement from Asia would reach St. John's New York newsroom on a 104114173Swollman# wire service teletype machine, which had prescribed signals for major news. 105114173Swollman# Associated Press, for example, would ring five bells before spewing out 106114173Swollman# typed copy of an important story, and 10 bells for news "of transcendental 107114173Swollman# importance." 108114173Swollman# 109114173Swollman# On Aug. 14, stalling while talking steadily into the NBC networks' open 110114173Swollman# microphone, St. John heard five bells and waited only to hear a sixth bell, 111114173Swollman# before announcing confidently: "Ladies and gentlemen, World War II is over. 112114173Swollman# The Japanese have agreed to our surrender terms." 113114173Swollman# 114114173Swollman# He had scored a 20-second scoop on other broadcasters. 115114173Swollman 116149590Swollman# From Arthur David Olson (2005-08-22): 117149590Swollman# Paul has been careful to use the "US" rules only in those locations 118149590Swollman# that are part of the United States; this reflects the real scope of 119149590Swollman# U.S. government action. So even though the "US" rules have changed 120149590Swollman# in the latest release, other countries won't be affected. 121149590Swollman 1222742Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 12375267SwollmanRule US 1918 1919 - Mar lastSun 2:00 1:00 D 1242742SwollmanRule US 1918 1919 - Oct lastSun 2:00 0 S 1252742SwollmanRule US 1942 only - Feb 9 2:00 1:00 W # War 12667578SwollmanRule US 1945 only - Aug 14 23:00u 1:00 P # Peace 1272742SwollmanRule US 1945 only - Sep 30 2:00 0 S 128149514SwollmanRule US 1967 2006 - Oct lastSun 2:00 0 S 1292742SwollmanRule US 1967 1973 - Apr lastSun 2:00 1:00 D 1302742SwollmanRule US 1974 only - Jan 6 2:00 1:00 D 1312742SwollmanRule US 1975 only - Feb 23 2:00 1:00 D 1322742SwollmanRule US 1976 1986 - Apr lastSun 2:00 1:00 D 133149514SwollmanRule US 1987 2006 - Apr Sun>=1 2:00 1:00 D 134149514SwollmanRule US 2007 max - Mar Sun>=8 2:00 1:00 D 135149514SwollmanRule US 2007 max - Nov Sun>=1 2:00 0 S 1362742Swollman 137153761Swollman# From Arthur David Olson, 2005-12-19 138153761Swollman# We generate the files specified below to guard against old files with 139153761Swollman# obsolete information being left in the time zone binary directory. 140153761Swollman# We limit the list to names that have appeared in previous versions of 141153761Swollman# this time zone package. 142153761Swollman# We do these as separate Zones rather than as Links to avoid problems if 143153761Swollman# a particular place changes whether it observes DST. 144153761Swollman# We put these specifications here in the northamerica file both to 145153761Swollman# increase the chances that they'll actually get compiled and to 146153761Swollman# avoid the need to duplicate the US rules in another file. 147153761Swollman 148153761Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 149153761SwollmanZone EST -5:00 - EST 150153761SwollmanZone MST -7:00 - MST 151153761SwollmanZone HST -10:00 - HST 152153761SwollmanZone EST5EDT -5:00 US E%sT 153153761SwollmanZone CST6CDT -6:00 US C%sT 154153761SwollmanZone MST7MDT -7:00 US M%sT 155153761SwollmanZone PST8PDT -8:00 US P%sT 156153761Swollman 15719878Swollman# From Bob Devine (1988-01-28): 1582742Swollman# ...Alaska (and Hawaii) had the timezone names changed in 1967. 1592742Swollman# old new 1602742Swollman# Pacific Standard Time(PST) -same- 1612742Swollman# Yukon Standard Time(YST) -same- 1622742Swollman# Central Alaska S.T. (CAT) Alaska-Hawaii St[an]dard Time (AHST) 1632742Swollman# Nome Standard Time (NT) Bering Standard Time (BST) 1642742Swollman# 1652742Swollman# ...Alaska's timezone lines were redrawn in 1983 to give only 2 tz. 1662742Swollman# The YST zone now covers nearly all of the state, AHST just part 1672742Swollman# of the Aleutian islands. No DST. 1682742Swollman 16914343Swollman# From Paul Eggert (1995-12-19): 17014343Swollman# The tables below use `NST', not `NT', for Nome Standard Time. 17114343Swollman# I invented `CAWT' for Central Alaska War Time. 17214343Swollman 17319878Swollman# From U. S. Naval Observatory (1989-01-19): 1742742Swollman# USA EASTERN 5 H BEHIND UTC NEW YORK, WASHINGTON 1752742Swollman# USA EASTERN 4 H BEHIND UTC APR 3 - OCT 30 1762742Swollman# USA CENTRAL 6 H BEHIND UTC CHICAGO, HOUSTON 1772742Swollman# USA CENTRAL 5 H BEHIND UTC APR 3 - OCT 30 1782742Swollman# USA MOUNTAIN 7 H BEHIND UTC DENVER 1792742Swollman# USA MOUNTAIN 6 H BEHIND UTC APR 3 - OCT 30 1802742Swollman# USA PACIFIC 8 H BEHIND UTC L.A., SAN FRANCISCO 1812742Swollman# USA PACIFIC 7 H BEHIND UTC APR 3 - OCT 30 1822742Swollman# USA ALASKA STD 9 H BEHIND UTC MOST OF ALASKA (AKST) 1832742Swollman# USA ALASKA STD 8 H BEHIND UTC APR 3 - OCT 30 (AKDT) 1842742Swollman# USA ALEUTIAN 10 H BEHIND UTC ISLANDS WEST OF 170W 1852742Swollman# USA - " - 9 H BEHIND UTC APR 3 - OCT 30 1862742Swollman# USA HAWAII 10 H BEHIND UTC 1872742Swollman# USA BERING 11 H BEHIND UTC SAMOA, MIDWAY 1882742Swollman 18919878Swollman# From Arthur David Olson (1989-01-21): 1902742Swollman# The above dates are for 1988. 1912742Swollman# Note the "AKST" and "AKDT" abbreviations, the claim that there's 1922742Swollman# no DST in Samoa, and the claim that there is DST in Alaska and the 1932742Swollman# Aleutians. 1942742Swollman 19519878Swollman# From Arthur David Olson (1988-02-13): 1962742Swollman# Legal standard time zone names, from United States Code (1982 Edition and 1972742Swollman# Supplement III), Title 15, Chapter 6, Section 260 and forward. First, names 19819878Swollman# up to 1967-04-01 (when most provisions of the Uniform Time Act of 1966 1992742Swollman# took effect), as explained in sections 263 and 261: 2002742Swollman# (none) 2012742Swollman# United States standard eastern time 2022742Swollman# United States standard mountain time 2032742Swollman# United States standard central time 2042742Swollman# United States standard Pacific time 2052742Swollman# (none) 2062742Swollman# United States standard Alaska time 2072742Swollman# (none) 20819878Swollman# Next, names from 1967-04-01 until 1983-11-30 (the date for 2092742Swollman# public law 98-181): 2102742Swollman# Atlantic standard time 2112742Swollman# eastern standard time 2122742Swollman# central standard time 2132742Swollman# mountain standard time 2142742Swollman# Pacific standard time 2152742Swollman# Yukon standard time 2162742Swollman# Alaska-Hawaii standard time 2172742Swollman# Bering standard time 21819878Swollman# And after 1983-11-30: 2192742Swollman# Atlantic standard time 2202742Swollman# eastern standard time 2212742Swollman# central standard time 2222742Swollman# mountain standard time 2232742Swollman# Pacific standard time 2242742Swollman# Alaska standard time 2252742Swollman# Hawaii-Aleutian standard time 2262742Swollman# Samoa standard time 2272742Swollman# The law doesn't give abbreviations. 22814343Swollman# 22975267Swollman# From Paul Eggert (2000-01-08), following a heads-up from Rives McDow: 23075267Swollman# Public law 106-564 (2000-12-23) introduced the abbreviation 23175267Swollman# "Chamorro Standard Time" for time in Guam and the Northern Marianas. 23275267Swollman# See the file "australasia". 233158421Swollman 234149514Swollman# From Arthur David Olson, 2005-08-09 235149514Swollman# The following was signed into law on 2005-08-08. 236149514Swollman# 237149514Swollman# H.R. 6, Energy Policy Act of 2005, SEC. 110. DAYLIGHT SAVINGS. 238149514Swollman# (a) Amendment- Section 3(a) of the Uniform Time Act of 1966 (15 239149514Swollman# U.S.C. 260a(a)) is amended-- 240149514Swollman# (1) by striking `first Sunday of April' and inserting `second 241149514Swollman# Sunday of March'; and 242149514Swollman# (2) by striking `last Sunday of October' and inserting `first 243149514Swollman# Sunday of November'. 244149514Swollman# (b) Effective Date- Subsection (a) shall take effect 1 year after the 245149514Swollman# date of enactment of this Act or March 1, 2007, whichever is later. 246149514Swollman# (c) Report to Congress- Not later than 9 months after the effective 247149514Swollman# date stated in subsection (b), the Secretary shall report to Congress 248149514Swollman# on the impact of this section on energy consumption in the United 249149514Swollman# States. 250149514Swollman# (d) Right to Revert- Congress retains the right to revert the 251149514Swollman# Daylight Saving Time back to the 2005 time schedules once the 252149514Swollman# Department study is complete. 2532742Swollman 25486222Swollman# US eastern time, represented by New York 25575267Swollman 25667578Swollman# Connecticut, Delaware, District of Columbia, most of Florida, 257149590Swollman# Georgia, southeast Indiana (Dearborn and Ohio counties), eastern Kentucky 258149590Swollman# (except America/Kentucky/Louisville below), Maine, Maryland, Massachusetts, 259114173Swollman# New Hampshire, New Jersey, New York, North Carolina, Ohio, 260114173Swollman# Pennsylvania, Rhode Island, South Carolina, eastern Tennessee, 261114173Swollman# Vermont, Virginia, West Virginia 26267578Swollman 263149514Swollman# From Dave Cantor (2004-11-02): 264149514Swollman# Early this summer I had the occasion to visit the Mount Washington 265149514Swollman# Observatory weather station atop (of course!) Mount Washington [, NH].... 266149514Swollman# One of the staff members said that the station was on Eastern Standard Time 267149514Swollman# and didn't change their clocks for Daylight Saving ... so that their 268149514Swollman# reports will always have times which are 5 hours behind UTC. 269149514Swollman 270153670Swollman# From Paul Eggert (2005-08-26): 271153670Swollman# According to today's Huntsville Times 272153670Swollman# <http://www.al.com/news/huntsvilletimes/index.ssf?/base/news/1125047783228320.xml&coll=1> 273153670Swollman# a few towns on Alabama's "eastern border with Georgia, such as Phenix City 274153670Swollman# in Russell County, Lanett in Chambers County and some towns in Lee County, 275153670Swollman# set their watches and clocks on Eastern time." It quotes H.H. "Bubba" 276153670Swollman# Roberts, city administrator in Phenix City. as saying "We are in the Central 277153670Swollman# time zone, but we do go by the Eastern time zone because so many people work 278158421Swollman# in Columbus." 279153670Swollman 28014343Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER 28114343SwollmanRule NYC 1920 only - Mar lastSun 2:00 1:00 D 28214343SwollmanRule NYC 1920 only - Oct lastSun 2:00 0 S 28314343SwollmanRule NYC 1921 1966 - Apr lastSun 2:00 1:00 D 28414343SwollmanRule NYC 1921 1954 - Sep lastSun 2:00 0 S 28514343SwollmanRule NYC 1955 1966 - Oct lastSun 2:00 0 S 28614343Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 287149514SwollmanZone America/New_York -4:56:02 - LMT 1883 Nov 18 12:03:58 28814343Swollman -5:00 US E%sT 1920 28914343Swollman -5:00 NYC E%sT 1942 29014343Swollman -5:00 US E%sT 1946 29114343Swollman -5:00 NYC E%sT 1967 29214343Swollman -5:00 US E%sT 2932742Swollman 29486222Swollman# US central time, represented by Chicago 29567578Swollman 296136638Swollman# Alabama, Arkansas, Florida panhandle (Bay, Calhoun, Escambia, 297136638Swollman# Gulf, Holmes, Jackson, Okaloosa, Santa Rosa, Walton, and 298136638Swollman# Washington counties), Illinois, western Indiana 299114173Swollman# (Gibson, Jasper, Lake, LaPorte, Newton, Porter, Posey, Spencer, 300114173Swollman# Vanderburgh, and Warrick counties), Iowa, most of Kansas, western 301114173Swollman# Kentucky, Louisiana, Minnesota, Mississippi, Missouri, eastern 302114173Swollman# Nebraska, eastern North Dakota, Oklahoma, eastern South Dakota, 303114173Swollman# western Tennessee, most of Texas, Wisconsin 30467578Swollman 305158421Swollman# From Larry M. Smith (2006-04-26) re Wisconsin: 306158421Swollman# http://www.legis.state.wi.us/statutes/Stat0175.pdf ... 307158421Swollman# is currently enforced at the 01:00 time of change. Because the local 308158421Swollman# "bar time" in the state corresponds to 02:00, a number of citations 309158421Swollman# are issued for the "sale of class 'B' alcohol after prohibited 310158421Swollman# hours" within the deviated hour of this change every year.... 311169811Swollman# 312169811Swollman# From Douglas R. Bomberg (2007-03-12): 313169811Swollman# Wisconsin has enacted (nearly eleventh-hour) legislation to get WI 314169811Swollman# Statue 175 closer in synch with the US Congress' intent.... 315169811Swollman# http://www.legis.state.wi.us/2007/data/acts/07Act3.pdf 316158421Swollman 31714343Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER 31814343SwollmanRule Chicago 1920 only - Jun 13 2:00 1:00 D 31914343SwollmanRule Chicago 1920 1921 - Oct lastSun 2:00 0 S 32014343SwollmanRule Chicago 1921 only - Mar lastSun 2:00 1:00 D 32114343SwollmanRule Chicago 1922 1966 - Apr lastSun 2:00 1:00 D 32214343SwollmanRule Chicago 1922 1954 - Sep lastSun 2:00 0 S 32314343SwollmanRule Chicago 1955 1966 - Oct lastSun 2:00 0 S 32414343Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 325149514SwollmanZone America/Chicago -5:50:36 - LMT 1883 Nov 18 12:09:24 32614343Swollman -6:00 US C%sT 1920 32714343Swollman -6:00 Chicago C%sT 1936 Mar 1 2:00 32814343Swollman -5:00 - EST 1936 Nov 15 2:00 32914343Swollman -6:00 Chicago C%sT 1942 33014343Swollman -6:00 US C%sT 1946 33114343Swollman -6:00 Chicago C%sT 1967 33214343Swollman -6:00 US C%sT 33386222Swollman# Oliver County, ND switched from mountain to central time on 1992-10-25. 334149514SwollmanZone America/North_Dakota/Center -6:45:12 - LMT 1883 Nov 18 12:14:48 33586222Swollman -7:00 US M%sT 1992 Oct 25 02:00 33686222Swollman -6:00 US C%sT 337158421Swollman# Morton County, ND, switched from mountain to central time on 338158421Swollman# 2003-10-26, except for the area around Mandan which was already central time. 339158421Swollman# See <http://dmses.dot.gov/docimages/p63/135818.pdf>. 340158421Swollman# Officially this switch also included part of Sioux County, and 341158421Swollman# Jones, Mellette, and Todd Counties in South Dakota; 342158421Swollman# but in practice these other counties were already observing central time. 343158421Swollman# See <http://www.epa.gov/fedrgstr/EPA-IMPACT/2003/October/Day-28/i27056.htm>. 344158421SwollmanZone America/North_Dakota/New_Salem -6:45:39 - LMT 1883 Nov 18 12:14:21 345158421Swollman -7:00 US M%sT 2003 Oct 26 02:00 346158421Swollman -6:00 US C%sT 3472742Swollman 348219149Sedwin# From Josh Findley (2011-01-21): 349219149Sedwin# ...it appears that Mercer County, North Dakota, changed from the 350219149Sedwin# mountain time zone to the central time zone at the last transition from 351219149Sedwin# daylight-saving to standard time (on Nov. 7, 2010): 352219149Sedwin# <a href="http://www.gpo.gov/fdsys/pkg/FR-2010-09-29/html/2010-24376.htm"> 353219149Sedwin# http://www.gpo.gov/fdsys/pkg/FR-2010-09-29/html/2010-24376.htm 354219149Sedwin# </a> 355219149Sedwin# <a href="http://www.bismarcktribune.com/news/local/article_1eb1b588-c758-11df-b472-001cc4c03286.html"> 356219149Sedwin# http://www.bismarcktribune.com/news/local/article_1eb1b588-c758-11df-b472-001cc4c03286.html 357219149Sedwin# </a> 358219149Sedwin 359219149Sedwin# From Andy Lipscomb (2011-01-24): 360219149Sedwin# ...according to the Census Bureau, the largest city is Beulah (although 361219149Sedwin# it's commonly referred to as Beulah-Hazen, with Hazen being the next 362219149Sedwin# largest city in Mercer County). Google Maps places Beulah's city hall 363219149Sedwin# at 4715'51" north, 10146'40" west, which yields an offset of 6h47'07". 364219149Sedwin 365219149SedwinZone America/North_Dakota/Beulah -6:47:07 - LMT 1883 Nov 18 12:12:53 366219149Sedwin -7:00 US M%sT 2010 Nov 7 2:00 367219149Sedwin -6:00 US C%sT 368219149Sedwin 36986222Swollman# US mountain time, represented by Denver 37067578Swollman# 371136638Swollman# Colorado, far western Kansas, Montana, western 37286222Swollman# Nebraska, Nevada border (Jackpot, Owyhee, and Mountain City), 373171948Sedwin# New Mexico, southwestern North Dakota, 37475267Swollman# western South Dakota, far western Texas (El Paso County, Hudspeth County, 37575267Swollman# and Pine Springs and Nickel Creek in Culberson County), Utah, Wyoming 37667578Swollman# 37714343Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER 37814343SwollmanRule Denver 1920 1921 - Mar lastSun 2:00 1:00 D 37914343SwollmanRule Denver 1920 only - Oct lastSun 2:00 0 S 38014343SwollmanRule Denver 1921 only - May 22 2:00 0 S 38114343SwollmanRule Denver 1965 1966 - Apr lastSun 2:00 1:00 D 38214343SwollmanRule Denver 1965 1966 - Oct lastSun 2:00 0 S 3832742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 384149514SwollmanZone America/Denver -6:59:56 - LMT 1883 Nov 18 12:00:04 38515309Swollman -7:00 US M%sT 1920 38615309Swollman -7:00 Denver M%sT 1942 38715309Swollman -7:00 US M%sT 1946 38815309Swollman -7:00 Denver M%sT 1967 38915309Swollman -7:00 US M%sT 3902742Swollman 39114343Swollman# US Pacific time, represented by Los Angeles 39267578Swollman# 393136638Swollman# California, northern Idaho (Benewah, Bonner, Boundary, Clearwater, 394171948Sedwin# Idaho, Kootenai, Latah, Lewis, Nez Perce, and Shoshone counties, 395171948Sedwin# and the northern three-quarters of Idaho county), 396136638Swollman# most of Nevada, most of Oregon, and Washington 39767578Swollman# 39814343Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER 39914343SwollmanRule CA 1948 only - Mar 14 2:00 1:00 D 40014343SwollmanRule CA 1949 only - Jan 1 2:00 0 S 40114343SwollmanRule CA 1950 1966 - Apr lastSun 2:00 1:00 D 40214343SwollmanRule CA 1950 1961 - Sep lastSun 2:00 0 S 40314343SwollmanRule CA 1962 1966 - Oct lastSun 2:00 0 S 40414343Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 405149514SwollmanZone America/Los_Angeles -7:52:58 - LMT 1883 Nov 18 12:07:02 40614343Swollman -8:00 US P%sT 1946 40714343Swollman -8:00 CA P%sT 1967 40814343Swollman -8:00 US P%sT 4098029Swollman 41014343Swollman# Alaska 41114343Swollman# AK%sT is the modern abbreviation for -9:00 per USNO. 41214343Swollman# 41386222Swollman# From Paul Eggert (2001-05-30): 41414343Swollman# Howse writes that Alaska switched from the Julian to the Gregorian calendar, 41519878Swollman# and from east-of-GMT to west-of-GMT days, when the US bought it from Russia. 41675267Swollman# This was on 1867-10-18, a Friday; the previous day was 1867-10-06 Julian, 41775267Swollman# also a Friday. Include only the time zone part of this transition, 41875267Swollman# ignoring the switch from Julian to Gregorian, since we can't represent 41975267Swollman# the Julian calendar. 42014343Swollman# 42186222Swollman# As far as we know, none of the exact locations mentioned below were 42286222Swollman# permanently inhabited in 1867 by anyone using either calendar. 42386222Swollman# (Yakutat was colonized by the Russians in 1799, but the settlement 42486222Swollman# was destroyed in 1805 by a Yakutat-kon war party.) However, there 42586222Swollman# were nearby inhabitants in some cases and for our purposes perhaps 42686222Swollman# it's best to simply use the official transition. 42786222Swollman# 428219411Sedwin 429219411Sedwin# From Steve Ferguson (2011-01-31): 430219411Sedwin# The author lives in Alaska and many of the references listed are only 431219411Sedwin# available to Alaskan residents. 432219411Sedwin# 433219411Sedwin# <a href="http://www.alaskahistoricalsociety.org/index.cfm?section=discover%20alaska&page=Glimpses%20of%20the%20Past&viewpost=2&ContentId=98"> 434219411Sedwin# http://www.alaskahistoricalsociety.org/index.cfm?section=discover%20alaska&page=Glimpses%20of%20the%20Past&viewpost=2&ContentId=98 435219411Sedwin# </a> 436219411Sedwin 437219411Sedwin# From Arthur David Olson (2011-02-01): 438219411Sedwin# Here's database-relevant material from the 2001 "Alaska History" article: 439219411Sedwin# 440219411Sedwin# On September 20 [1979]...DOT...officials decreed that on April 27, 441219411Sedwin# 1980, Juneau and other nearby communities would move to Yukon Time. 442219411Sedwin# Sitka, Petersburg, Wrangell, and Ketchikan, however, would remain on 443219411Sedwin# Pacific Time. 444219411Sedwin# 445219411Sedwin# ...on September 22, 1980, DOT Secretary Neil E. Goldschmidt rescinded the 446219411Sedwin# Department's September 1979 decision. Juneau and other communities in 447219411Sedwin# northern Southeast reverted to Pacific Time on October 26. 448219411Sedwin# 449219411Sedwin# On October 28 [1983]...the Metlakatla Indian Community Council voted 450219411Sedwin# unanimously to keep the reservation on Pacific Time. 451219411Sedwin# 452219411Sedwin# According to DOT official Joanne Petrie, Indian reservations are not 453219411Sedwin# bound to follow time zones imposed by neighboring jurisdictions. 454219411Sedwin# 455219411Sedwin# (The last is consistent with how the database now handles the Navajo 456219411Sedwin# Nation.) 457219411Sedwin 458219411Sedwin# From Arthur David Olson (2011-02-09): 459219411Sedwin# I just spoke by phone with a staff member at the Metlakatla Indian 460219411Sedwin# Community office (using contact information available at 461219411Sedwin# <a href="http://www.commerce.state.ak.us/dca/commdb/CIS.cfm?Comm_Boro_name=Metlakatla"> 462219411Sedwin# http://www.commerce.state.ak.us/dca/commdb/CIS.cfm?Comm_Boro_name=Metlakatla 463219411Sedwin# </a>). 464219411Sedwin# It's shortly after 1:00 here on the east coast of the United States; 465219411Sedwin# the staffer said it was shortly after 10:00 there. When I asked whether 466219411Sedwin# that meant they were on Pacific time, they said no--they were on their 467219411Sedwin# own time. I asked about daylight saving; they said it wasn't used. I 468219411Sedwin# did not inquire about practices in the past. 469219411Sedwin 470226298Sedwin# From Arthur David Olson (2011-08-17): 471226298Sedwin# For lack of better information, assume that Metlakatla's 472226298Sedwin# abandonment of use of daylight saving resulted from the 1983 vote. 473226298Sedwin 47414343Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 47575267SwollmanZone America/Juneau 15:02:19 - LMT 1867 Oct 18 47675267Swollman -8:57:41 - LMT 1900 Aug 20 12:00 47714343Swollman -8:00 - PST 1942 47814343Swollman -8:00 US P%sT 1946 47914343Swollman -8:00 - PST 1969 480219411Sedwin -8:00 US P%sT 1980 Apr 27 2:00 481240461Sedwin -9:00 US Y%sT 1980 Oct 26 2:00 48214343Swollman -8:00 US P%sT 1983 Oct 30 2:00 483136638Swollman -9:00 US Y%sT 1983 Nov 30 48414343Swollman -9:00 US AK%sT 485226298SedwinZone America/Sitka 14:58:47 - LMT 1867 Oct 18 486219411Sedwin -9:01:13 - LMT 1900 Aug 20 12:00 487219411Sedwin -8:00 - PST 1942 488219411Sedwin -8:00 US P%sT 1946 489219411Sedwin -8:00 - PST 1969 490219411Sedwin -8:00 US P%sT 1983 Oct 30 2:00 491219411Sedwin -9:00 US Y%sT 1983 Nov 30 492219411Sedwin -9:00 US AK%sT 493219411SedwinZone America/Metlakatla 15:13:42 - LMT 1867 Oct 18 494219411Sedwin -8:46:18 - LMT 1900 Aug 20 12:00 495219411Sedwin -8:00 - PST 1942 496219411Sedwin -8:00 US P%sT 1946 497219411Sedwin -8:00 - PST 1969 498219411Sedwin -8:00 US P%sT 1983 Oct 30 2:00 499226298Sedwin -8:00 - MeST 50075267SwollmanZone America/Yakutat 14:41:05 - LMT 1867 Oct 18 50175267Swollman -9:18:55 - LMT 1900 Aug 20 12:00 50214343Swollman -9:00 - YST 1942 50314343Swollman -9:00 US Y%sT 1946 50414343Swollman -9:00 - YST 1969 505136638Swollman -9:00 US Y%sT 1983 Nov 30 50614343Swollman -9:00 US AK%sT 50775267SwollmanZone America/Anchorage 14:00:24 - LMT 1867 Oct 18 50875267Swollman -9:59:36 - LMT 1900 Aug 20 12:00 50914343Swollman -10:00 - CAT 1942 510158421Swollman -10:00 US CAT/CAWT 1945 Aug 14 23:00u 511158421Swollman -10:00 US CAT/CAPT 1946 # Peace 51214343Swollman -10:00 - CAT 1967 Apr 51314343Swollman -10:00 - AHST 1969 51414343Swollman -10:00 US AH%sT 1983 Oct 30 2:00 515136638Swollman -9:00 US Y%sT 1983 Nov 30 51614343Swollman -9:00 US AK%sT 51775267SwollmanZone America/Nome 12:58:21 - LMT 1867 Oct 18 51875267Swollman -11:01:38 - LMT 1900 Aug 20 12:00 51914343Swollman -11:00 - NST 1942 52014343Swollman -11:00 US N%sT 1946 52114343Swollman -11:00 - NST 1967 Apr 52214343Swollman -11:00 - BST 1969 52314343Swollman -11:00 US B%sT 1983 Oct 30 2:00 524136638Swollman -9:00 US Y%sT 1983 Nov 30 52514343Swollman -9:00 US AK%sT 52675267SwollmanZone America/Adak 12:13:21 - LMT 1867 Oct 18 52775267Swollman -11:46:38 - LMT 1900 Aug 20 12:00 52814343Swollman -11:00 - NST 1942 52914343Swollman -11:00 US N%sT 1946 53014343Swollman -11:00 - NST 1967 Apr 53114343Swollman -11:00 - BST 1969 53214343Swollman -11:00 US B%sT 1983 Oct 30 2:00 533136638Swollman -10:00 US AH%sT 1983 Nov 30 53414343Swollman -10:00 US HA%sT 535149514Swollman# The following switches don't quite make our 1970 cutoff. 536149514Swollman# 53714343Swollman# Shanks writes that part of southwest Alaska (e.g. Aniak) 53814343Swollman# switched from -11:00 to -10:00 on 1968-09-22 at 02:00, 53914343Swollman# and another part (e.g. Akiak) made the same switch five weeks later. 540149514Swollman# 541149514Swollman# From David Flater (2004-11-09): 542149514Swollman# In e-mail, 2004-11-02, Ray Hudson, historian/liaison to the Unalaska 543149514Swollman# Historic Preservation Commission, provided this information, which 544149514Swollman# suggests that Unalaska deviated from statutory time from early 1967 545149514Swollman# possibly until 1983: 546149514Swollman# 547149514Swollman# Minutes of the Unalaska City Council Meeting, January 10, 1967: 548149514Swollman# "Except for St. Paul and Akutan, Unalaska is the only important 549149514Swollman# location not on Alaska Standard Time. The following resolution was 550149514Swollman# made by William Robinson and seconded by Henry Swanson: Be it 551149514Swollman# resolved that the City of Unalaska hereby goes to Alaska Standard 552149514Swollman# Time as of midnight Friday, January 13, 1967 (1 A.M. Saturday, 553149514Swollman# January 14, Alaska Standard Time.) This resolution was passed with 554149514Swollman# three votes for and one against." 5552742Swollman 55614343Swollman# Hawaii 557218122Sedwin 558218122Sedwin# From Arthur David Olson (2010-12-09): 559218122Sedwin# "Hawaiian Time" by Robert C. Schmitt and Doak C. Cox appears on pages 207-225 560218122Sedwin# of volume 26 of The Hawaiian Journal of History (1992). As of 2010-12-09, 561218122Sedwin# the article is available at 562218122Sedwin# <a href="http://evols.library.manoa.hawaii.edu/bitstream/10524/239/2/JL26215.pdf"> 563218122Sedwin# http://evols.library.manoa.hawaii.edu/bitstream/10524/239/2/JL26215.pdf 564218122Sedwin# </a> 565218122Sedwin# and indicates that standard time was adopted effective noon, January 566218122Sedwin# 13, 1896 (page 218), that in "1933, the Legislature decreed daylight 567218122Sedwin# saving for the period between the last Sunday of each April and the 568218122Sedwin# last Sunday of each September, but less than a month later repealed the 569218122Sedwin# act," (page 220), that year-round daylight saving time was in effect 570218122Sedwin# from 1942-02-09 to 1945-09-30 (page 221, with no time of day given for 571218122Sedwin# when clocks changed) and that clocks were changed by 30 minutes 572218122Sedwin# effective the second Sunday of June, 1947 (page 219, with no time of 573218122Sedwin# day given for when clocks changed). A footnote for the 1933 changes 574218122Sedwin# cites Session Laws of Hawaii 1933, "Act. 90 (approved 26 Apr. 1933) 575218122Sedwin# and Act 163 (approved 21 May 1933)." 576218122Sedwin 577218122Sedwin# From Arthur David Olson (2011-01-19): 578218122Sedwin# The following is from "Laws of the Territory of Hawaii Passed by the 579218122Sedwin# Seventeenth Legislature: Regular Session 1933," available (as of 580218122Sedwin# 2011-01-19) at American University's Pence Law Library. Page 85: "Act 581218122Sedwin# 90...At 2 o'clock ante meridian of the last Sunday in April of each 582218122Sedwin# year, the standard time of this Territory shall be advanced one 583218122Sedwin# hour...This Act shall take effect upon its approval. Approved this 26th 584218122Sedwin# day of April, A. D. 1933. LAWRENCE M JUDD, Governor of the Territory of 585218122Sedwin# Hawaii." Page 172: "Act 163...Act 90 of the Session Laws of 1933 is 586218122Sedwin# hereby repealed...This Act shall take effect upon its approval, upon 587218122Sedwin# which date the standard time of this Territory shall be restored to 588218122Sedwin# that existing immediately prior to the taking effect of said Act 90. 589218122Sedwin# Approved this 21st day of May, A. D. 1933. LAWRENCE M. JUDD, Governor 590218122Sedwin# of the Territory of Hawaii." 59114343Swollman# 592218122Sedwin# Note that 1933-05-21 was a Sunday. 593218122Sedwin# We're left to guess the time of day when Act 163 was approved; guess noon. 594218122Sedwin 595218122SedwinZone Pacific/Honolulu -10:31:26 - LMT 1896 Jan 13 12:00 #Schmitt&Cox 596218122Sedwin -10:30 - HST 1933 Apr 30 2:00 #Laws 1933 597218122Sedwin -10:30 1:00 HDT 1933 May 21 12:00 #Laws 1933+12 598218122Sedwin -10:30 - HST 1942 Feb 09 2:00 #Schmitt&Cox+2 599226298Sedwin -10:30 1:00 HDT 1945 Sep 30 2:00 #Schmitt&Cox+2 600226298Sedwin -10:30 - HST 1947 Jun 8 2:00 #Schmitt&Cox+2 60114343Swollman -10:00 - HST 6022742Swollman 60314343Swollman# Now we turn to US areas that have diverged from the consensus since 1970. 60414343Swollman 60514343Swollman# Arizona mostly uses MST. 606114173Swollman 607114173Swollman# From Paul Eggert (2002-10-20): 608114173Swollman# 609114173Swollman# The information in the rest of this paragraph is derived from the 610114173Swollman# <a href="http://www.dlapr.lib.az.us/links/daylight.htm"> 611114173Swollman# Daylight Saving Time web page (2002-01-23)</a> maintained by the 612114173Swollman# Arizona State Library, Archives and Public Records. 613114173Swollman# Between 1944-01-01 and 1944-04-01 the State of Arizona used standard 614114173Swollman# time, but by federal law railroads, airlines, bus lines, military 615114173Swollman# personnel, and some engaged in interstate commerce continued to 616114173Swollman# observe war (i.e., daylight saving) time. The 1944-03-17 Phoenix 617114173Swollman# Gazette says that was the date the law changed, and that 04-01 was 618114173Swollman# the date the state's clocks would change. In 1945 the State of 619114173Swollman# Arizona used standard time all year, again with exceptions only as 620114173Swollman# mandated by federal law. Arizona observed DST in 1967, but Arizona 621114173Swollman# Laws 1968, ch. 183 (effective 1968-03-21) repealed DST. 622114173Swollman# 623114173Swollman# Shanks says the 1944 experiment came to an end on 1944-03-17. 624114173Swollman# Go with the Arizona State Library instead. 625114173Swollman 626149514SwollmanZone America/Phoenix -7:28:18 - LMT 1883 Nov 18 11:31:42 62714343Swollman -7:00 US M%sT 1944 Jan 1 00:01 628114173Swollman -7:00 - MST 1944 Apr 1 00:01 62914343Swollman -7:00 US M%sT 1944 Oct 1 00:01 63014343Swollman -7:00 - MST 1967 631114173Swollman -7:00 US M%sT 1968 Mar 21 63214343Swollman -7:00 - MST 63319878Swollman# From Arthur David Olson (1988-02-13): 63414343Swollman# A writer from the Inter Tribal Council of Arizona, Inc., 635136638Swollman# notes in private correspondence dated 1987-12-28 that "Presently, only the 6362742Swollman# Navajo Nation participates in the Daylight Saving Time policy, due to its 6372742Swollman# large size and location in three states." (The "only" means that other 6382742Swollman# tribal nations don't use DST.) 6392742Swollman 64014343SwollmanLink America/Denver America/Shiprock 6412742Swollman 642136638Swollman# Southern Idaho (Ada, Adams, Bannock, Bear Lake, Bingham, Blaine, 643136638Swollman# Boise, Bonneville, Butte, Camas, Canyon, Caribou, Cassia, Clark, 644136638Swollman# Custer, Elmore, Franklin, Fremont, Gem, Gooding, Jefferson, Jerome, 645136638Swollman# Lemhi, Lincoln, Madison, Minidoka, Oneida, Owyhee, Payette, Power, 646171948Sedwin# Teton, Twin Falls, Valley, Washington counties, and the southern 647171948Sedwin# quarter of Idaho county) and eastern Oregon (most of Malheur County) 648136638Swollman# switched four weeks late in 1974. 649149514Swollman# 65014343Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 651149514SwollmanZone America/Boise -7:44:49 - LMT 1883 Nov 18 12:15:11 65214343Swollman -8:00 US P%sT 1923 May 13 2:00 65314343Swollman -7:00 US M%sT 1974 65414343Swollman -7:00 - MST 1974 Feb 3 2:00 65514343Swollman -7:00 US M%sT 6562742Swollman 65714343Swollman# Indiana 65814343Swollman# 65958787Sru# For a map of Indiana's time zone regions, see: 66058787Sru# <a href="http://www.mccsc.edu/time.html"> 66158787Sru# What time is it in Indiana? 662158421Swollman# </a> (2006-03-01) 66358787Sru# 664171948Sedwin# From Paul Eggert (2007-08-17): 665149590Swollman# Since 1970, most of Indiana has been like America/Indiana/Indianapolis, 666149590Swollman# with the following exceptions: 667149590Swollman# 668149590Swollman# - Gibson, Jasper, Lake, LaPorte, Newton, Porter, Posey, Spencer, 669149590Swollman# Vandenburgh, and Warrick counties have been like America/Chicago. 670149590Swollman# 671149590Swollman# - Dearborn and Ohio counties have been like America/New_York. 672149590Swollman# 673149590Swollman# - Clark, Floyd, and Harrison counties have been like 674149590Swollman# America/Kentucky/Louisville. 675149590Swollman# 676171948Sedwin# - Crawford, Daviess, Dubois, Knox, Martin, Perry, Pike, Pulaski, Starke, 677171948Sedwin# and Switzerland counties have their own time zone histories as noted below. 678158421Swollman# 679158421Swollman# Shanks partitioned Indiana into 345 regions, each with its own time history, 680158421Swollman# and wrote ``Even newspaper reports present contradictory information.'' 681158421Swollman# Those Hoosiers! Such a flighty and changeable people! 68214343Swollman# Fortunately, most of the complexity occurred before our cutoff date of 1970. 68314343Swollman# 68414343Swollman# Other than Indianapolis, the Indiana place names are so nondescript 68514343Swollman# that they would be ambiguous if we left them at the `America' level. 68614343Swollman# So we reluctantly put them all in a subdirectory `America/Indiana'. 68775267Swollman 688149514Swollman# From Paul Eggert (2005-08-16): 689158421Swollman# http://www.mccsc.edu/time.html says that Indiana will use DST starting 2006. 69075267Swollman 691158421Swollman# From Nathan Stratton Treadway (2006-03-30): 692158421Swollman# http://www.dot.gov/affairs/dot0406.htm [3705 B] 693158421Swollman# From Deborah Goldsmith (2006-01-18): 694158421Swollman# http://dmses.dot.gov/docimages/pdf95/382329_web.pdf [2.9 MB] 695158421Swollman# From Paul Eggert (2006-01-20): 696158421Swollman# It says "DOT is relocating the time zone boundary in Indiana to move Starke, 697158421Swollman# Pulaski, Knox, Daviess, Martin, Pike, Dubois, and Perry Counties from the 698158421Swollman# Eastern Time Zone to the Central Time Zone.... The effective date of 699158421Swollman# this rule is 2:OO a.m. EST Sunday, April 2, 2006, which is the 700158421Swollman# changeover date from standard time to Daylight Saving Time." 701158421Swollman# Strictly speaking, this means the affected counties will change their 702158421Swollman# clocks twice that night, but this obviously is in error. The intent 703158421Swollman# is that 01:59:59 EST be followed by 02:00:00 CDT. 704158421Swollman 705169811Swollman# From Gwillim Law (2007-02-10): 706169811Swollman# The Associated Press has been reporting that Pulaski County, Indiana is 707169811Swollman# going to switch from Central to Eastern Time on March 11, 2007.... 708169811Swollman# http://www.indystar.com/apps/pbcs.dll/article?AID=/20070207/LOCAL190108/702070524/0/LOCAL 709169811Swollman 71014343Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER 71114343SwollmanRule Indianapolis 1941 only - Jun 22 2:00 1:00 D 71214343SwollmanRule Indianapolis 1941 1954 - Sep lastSun 2:00 0 S 71314343SwollmanRule Indianapolis 1946 1954 - Apr lastSun 2:00 1:00 D 71414343Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 715149514SwollmanZone America/Indiana/Indianapolis -5:44:38 - LMT 1883 Nov 18 12:15:22 71614343Swollman -6:00 US C%sT 1920 71714343Swollman -6:00 Indianapolis C%sT 1942 71814343Swollman -6:00 US C%sT 1946 71914343Swollman -6:00 Indianapolis C%sT 1955 Apr 24 2:00 72014343Swollman -5:00 - EST 1957 Sep 29 2:00 72114343Swollman -6:00 - CST 1958 Apr 27 2:00 72214343Swollman -5:00 - EST 1969 72314343Swollman -5:00 US E%sT 1971 724149514Swollman -5:00 - EST 2006 725149514Swollman -5:00 US E%sT 7262742Swollman# 727158421Swollman# Eastern Crawford County, Indiana, left its clocks alone in 1974, 728158421Swollman# as well as from 1976 through 2005. 72914343Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER 73014343SwollmanRule Marengo 1951 only - Apr lastSun 2:00 1:00 D 73114343SwollmanRule Marengo 1951 only - Sep lastSun 2:00 0 S 73214343SwollmanRule Marengo 1954 1960 - Apr lastSun 2:00 1:00 D 73314343SwollmanRule Marengo 1954 1960 - Sep lastSun 2:00 0 S 73414343Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 735149514SwollmanZone America/Indiana/Marengo -5:45:23 - LMT 1883 Nov 18 12:14:37 73614343Swollman -6:00 US C%sT 1951 73714343Swollman -6:00 Marengo C%sT 1961 Apr 30 2:00 73814343Swollman -5:00 - EST 1969 73914343Swollman -5:00 US E%sT 1974 Jan 6 2:00 74014343Swollman -6:00 1:00 CDT 1974 Oct 27 2:00 74114343Swollman -5:00 US E%sT 1976 742149514Swollman -5:00 - EST 2006 743149514Swollman -5:00 US E%sT 74414343Swollman# 745171948Sedwin# Daviess, Dubois, Knox, and Martin Counties, Indiana, 746171948Sedwin# switched from eastern to central time in April 2006, then switched back 747171948Sedwin# in November 2007. 748158421Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER 749158421SwollmanRule Vincennes 1946 only - Apr lastSun 2:00 1:00 D 750158421SwollmanRule Vincennes 1946 only - Sep lastSun 2:00 0 S 751158421SwollmanRule Vincennes 1953 1954 - Apr lastSun 2:00 1:00 D 752158421SwollmanRule Vincennes 1953 1959 - Sep lastSun 2:00 0 S 753158421SwollmanRule Vincennes 1955 only - May 1 0:00 1:00 D 754158421SwollmanRule Vincennes 1956 1963 - Apr lastSun 2:00 1:00 D 755158421SwollmanRule Vincennes 1960 only - Oct lastSun 2:00 0 S 756158421SwollmanRule Vincennes 1961 only - Sep lastSun 2:00 0 S 757158421SwollmanRule Vincennes 1962 1963 - Oct lastSun 2:00 0 S 758158421Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 759158421SwollmanZone America/Indiana/Vincennes -5:50:07 - LMT 1883 Nov 18 12:09:53 760158421Swollman -6:00 US C%sT 1946 761158421Swollman -6:00 Vincennes C%sT 1964 Apr 26 2:00 762158421Swollman -5:00 - EST 1969 763158421Swollman -5:00 US E%sT 1971 764158421Swollman -5:00 - EST 2006 Apr 2 2:00 765171948Sedwin -6:00 US C%sT 2007 Nov 4 2:00 766171948Sedwin -5:00 US E%sT 767171948Sedwin# 768171948Sedwin# Perry County, Indiana, switched from eastern to central time in April 2006. 769171948Sedwin# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER 770171948SedwinRule Perry 1946 only - Apr lastSun 2:00 1:00 D 771171948SedwinRule Perry 1946 only - Sep lastSun 2:00 0 S 772171948SedwinRule Perry 1953 1954 - Apr lastSun 2:00 1:00 D 773171948SedwinRule Perry 1953 1959 - Sep lastSun 2:00 0 S 774171948SedwinRule Perry 1955 only - May 1 0:00 1:00 D 775171948SedwinRule Perry 1956 1963 - Apr lastSun 2:00 1:00 D 776171948SedwinRule Perry 1960 only - Oct lastSun 2:00 0 S 777171948SedwinRule Perry 1961 only - Sep lastSun 2:00 0 S 778171948SedwinRule Perry 1962 1963 - Oct lastSun 2:00 0 S 779171948Sedwin# Zone NAME GMTOFF RULES FORMAT [UNTIL] 780171948SedwinZone America/Indiana/Tell_City -5:47:03 - LMT 1883 Nov 18 12:12:57 781171948Sedwin -6:00 US C%sT 1946 782171948Sedwin -6:00 Perry C%sT 1964 Apr 26 2:00 783171948Sedwin -5:00 - EST 1969 784171948Sedwin -5:00 US E%sT 1971 785171948Sedwin -5:00 - EST 2006 Apr 2 2:00 786158421Swollman -6:00 US C%sT 787158421Swollman# 788158421Swollman# Pike County, Indiana moved from central to eastern time in 1977, 789171948Sedwin# then switched back in 2006, then switched back again in 2007. 790158421Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER 791158421SwollmanRule Pike 1955 only - May 1 0:00 1:00 D 792158421SwollmanRule Pike 1955 1960 - Sep lastSun 2:00 0 S 793158421SwollmanRule Pike 1956 1964 - Apr lastSun 2:00 1:00 D 794158421SwollmanRule Pike 1961 1964 - Oct lastSun 2:00 0 S 795158421Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 796158421SwollmanZone America/Indiana/Petersburg -5:49:07 - LMT 1883 Nov 18 12:10:53 797158421Swollman -6:00 US C%sT 1955 798158421Swollman -6:00 Pike C%sT 1965 Apr 25 2:00 799158421Swollman -5:00 - EST 1966 Oct 30 2:00 800158421Swollman -6:00 US C%sT 1977 Oct 30 2:00 801158421Swollman -5:00 - EST 2006 Apr 2 2:00 802171948Sedwin -6:00 US C%sT 2007 Nov 4 2:00 803171948Sedwin -5:00 US E%sT 804158421Swollman# 805158421Swollman# Starke County, Indiana moved from central to eastern time in 1991, 806158421Swollman# then switched back in 2006. 80719878Swollman# From Arthur David Olson (1991-10-28): 80819878Swollman# An article on page A3 of the Sunday, 1991-10-27 Washington Post 80914343Swollman# notes that Starke County switched from Central time to Eastern time as of 81019878Swollman# 1991-10-27. 81114343Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER 81214343SwollmanRule Starke 1947 1961 - Apr lastSun 2:00 1:00 D 81314343SwollmanRule Starke 1947 1954 - Sep lastSun 2:00 0 S 81414343SwollmanRule Starke 1955 1956 - Oct lastSun 2:00 0 S 81514343SwollmanRule Starke 1957 1958 - Sep lastSun 2:00 0 S 81614343SwollmanRule Starke 1959 1961 - Oct lastSun 2:00 0 S 81714343Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 818149514SwollmanZone America/Indiana/Knox -5:46:30 - LMT 1883 Nov 18 12:13:30 81914343Swollman -6:00 US C%sT 1947 82014343Swollman -6:00 Starke C%sT 1962 Apr 29 2:00 82114343Swollman -5:00 - EST 1963 Oct 27 2:00 82214343Swollman -6:00 US C%sT 1991 Oct 27 2:00 823158421Swollman -5:00 - EST 2006 Apr 2 2:00 824158421Swollman -6:00 US C%sT 82514343Swollman# 826169811Swollman# Pulaski County, Indiana, switched from eastern to central time in 827169811Swollman# April 2006 and then switched back in March 2007. 828169811Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER 829169811SwollmanRule Pulaski 1946 1960 - Apr lastSun 2:00 1:00 D 830169811SwollmanRule Pulaski 1946 1954 - Sep lastSun 2:00 0 S 831169811SwollmanRule Pulaski 1955 1956 - Oct lastSun 2:00 0 S 832169811SwollmanRule Pulaski 1957 1960 - Sep lastSun 2:00 0 S 833169811Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 834169811SwollmanZone America/Indiana/Winamac -5:46:25 - LMT 1883 Nov 18 12:13:35 835169811Swollman -6:00 US C%sT 1946 836169811Swollman -6:00 Pulaski C%sT 1961 Apr 30 2:00 837169811Swollman -5:00 - EST 1969 838169811Swollman -5:00 US E%sT 1971 839169811Swollman -5:00 - EST 2006 Apr 2 2:00 840169811Swollman -6:00 US C%sT 2007 Mar 11 2:00 841169811Swollman -5:00 US E%sT 842169811Swollman# 843158421Swollman# Switzerland County, Indiana, did not observe DST from 1973 through 2005. 84414343Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 845149514SwollmanZone America/Indiana/Vevay -5:40:16 - LMT 1883 Nov 18 12:19:44 84614343Swollman -6:00 US C%sT 1954 Apr 25 2:00 84714343Swollman -5:00 - EST 1969 84814343Swollman -5:00 US E%sT 1973 849149514Swollman -5:00 - EST 2006 850149514Swollman -5:00 US E%sT 8512742Swollman 85214343Swollman# Part of Kentucky left its clocks alone in 1974. 853149590Swollman# This also includes Clark, Floyd, and Harrison counties in Indiana. 85414343Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER 85514343SwollmanRule Louisville 1921 only - May 1 2:00 1:00 D 85614343SwollmanRule Louisville 1921 only - Sep 1 2:00 0 S 85714343SwollmanRule Louisville 1941 1961 - Apr lastSun 2:00 1:00 D 85814343SwollmanRule Louisville 1941 only - Sep lastSun 2:00 0 S 85914343SwollmanRule Louisville 1946 only - Jun 2 2:00 0 S 86014343SwollmanRule Louisville 1950 1955 - Sep lastSun 2:00 0 S 86114343SwollmanRule Louisville 1956 1960 - Oct lastSun 2:00 0 S 86214343Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 863149514SwollmanZone America/Kentucky/Louisville -5:43:02 - LMT 1883 Nov 18 12:16:58 86414343Swollman -6:00 US C%sT 1921 86514343Swollman -6:00 Louisville C%sT 1942 86614343Swollman -6:00 US C%sT 1946 86714343Swollman -6:00 Louisville C%sT 1961 Jul 23 2:00 86814343Swollman -5:00 - EST 1968 86914343Swollman -5:00 US E%sT 1974 Jan 6 2:00 87014343Swollman -6:00 1:00 CDT 1974 Oct 27 2:00 87114343Swollman -5:00 US E%sT 87267578Swollman# 873158421Swollman# Wayne County, Kentucky 87458787Sru# 87558787Sru# From 87658787Sru# <a href="http://www.lake-cumberland.com/life/archive/news990129time.shtml"> 87758787Sru# Lake Cumberland LIFE 87858787Sru# </a> (1999-01-29) via WKYM-101.7: 87958787Sru# Clinton County has joined Wayne County in asking the DoT to change from 88058787Sru# the Central to the Eastern time zone.... The Wayne County government made 88158787Sru# the same request in December. And while Russell County officials have not 88258787Sru# taken action, the majority of respondents to a poll conducted there in 88358787Sru# August indicated they would like to change to "fast time" also. 88458787Sru# The three Lake Cumberland counties are the farthest east of any U.S. 88558787Sru# location in the Central time zone. 88667578Swollman# 88767578Swollman# From Rich Wales (2000-08-29): 88867578Swollman# After prolonged debate, and despite continuing deep differences of opinion, 88967578Swollman# Wayne County (central Kentucky) is switching from Central (-0600) to Eastern 89075267Swollman# (-0500) time. They won't "fall back" this year. See Sara Shipley, 89175267Swollman# The difference an hour makes, Nando Times (2000-08-29 15:33 -0400). 89286222Swollman# 89386222Swollman# From Paul Eggert (2001-07-16): 89486222Swollman# The final rule was published in the 89586222Swollman# <a href="http://frwebgate.access.gpo.gov/cgi-bin/getdoc.cgi?dbname=2000_register&docid=fr17au00-22"> 89686222Swollman# Federal Register 65, 160 (2000-08-17), page 50154-50158. 89786222Swollman# </a> 898114173Swollman# 899149514SwollmanZone America/Kentucky/Monticello -5:39:24 - LMT 1883 Nov 18 12:20:36 90067578Swollman -6:00 US C%sT 1946 90167578Swollman -6:00 - CST 1968 90267578Swollman -6:00 US C%sT 2000 Oct 29 2:00 90367578Swollman -5:00 US E%sT 9042742Swollman 90567578Swollman 90667578Swollman# From Rives McDow (2000-08-30): 90767578Swollman# Here ... are all the changes in the US since 1985. 90867578Swollman# Kearny County, KS (put all of county on central; 90967578Swollman# previously split between MST and CST) ... 1990-10 91067578Swollman# Starke County, IN (from CST to EST) ... 1991-10 91167578Swollman# Oliver County, ND (from MST to CST) ... 1992-10 91267578Swollman# West Wendover, NV (from PST TO MST) ... 1999-10 91367578Swollman# Wayne County, KY (from CST to EST) ... 2000-10 91467578Swollman# 91586222Swollman# From Paul Eggert (2001-07-17): 91686222Swollman# We don't know where the line used to be within Kearny County, KS, 91786222Swollman# so omit that change for now. 91886222Swollman# See America/Indiana/Knox for the Starke County, IN change. 91986222Swollman# See America/North_Dakota/Center for the Oliver County, ND change. 92086222Swollman# West Wendover, NV officially switched from Pacific to mountain time on 92186222Swollman# 1999-10-31. See the 92286222Swollman# <a href="http://frwebgate.access.gpo.gov/cgi-bin/getdoc.cgi?dbname=1999_register&docid=fr21oc99-15"> 92386222Swollman# Federal Register 64, 203 (1999-10-21), page 56705-56707. 92486222Swollman# </a> 92586222Swollman# However, the Federal Register says that West Wendover already operated 92686222Swollman# on mountain time, and the rule merely made this official; 92786222Swollman# hence a separate tz entry is not needed. 92867578Swollman 92914343Swollman# Michigan 93014343Swollman# 93119878Swollman# From Bob Devine (1988-01-28): 93214343Swollman# Michigan didn't observe DST from 1968 to 1973. 93314343Swollman# 93458787Sru# From Paul Eggert (1999-03-31): 93558787Sru# Shanks writes that Michigan started using standard time on 1885-09-18, 93658787Sru# but Howse writes (pp 124-125, referring to Popular Astronomy, 1901-01) 93758787Sru# that Detroit kept 93814343Swollman# 93914343Swollman# local time until 1900 when the City Council decreed that clocks should 94014343Swollman# be put back twenty-eight minutes to Central Standard Time. Half the 94114343Swollman# city obeyed, half refused. After considerable debate, the decision 94214343Swollman# was rescinded and the city reverted to Sun time. A derisive offer to 94314343Swollman# erect a sundial in front of the city hall was referred to the 94414343Swollman# Committee on Sewers. Then, in 1905, Central time was adopted 94514343Swollman# by city vote. 94614343Swollman# 94714343Swollman# This story is too entertaining to be false, so go with Howse over Shanks. 94814343Swollman# 94975267Swollman# From Paul Eggert (2001-03-06): 95075267Swollman# Garland (1927) writes ``Cleveland and Detroit advanced their clocks 95175267Swollman# one hour in 1914.'' This change is not in Shanks. We have no more 95275267Swollman# info, so omit this for now. 95375267Swollman# 95414343Swollman# Most of Michigan observed DST from 1973 on, but was a bit late in 1975. 95514343Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER 95614343SwollmanRule Detroit 1948 only - Apr lastSun 2:00 1:00 D 95714343SwollmanRule Detroit 1948 only - Sep lastSun 2:00 0 S 95814343SwollmanRule Detroit 1967 only - Jun 14 2:00 1:00 D 95914343SwollmanRule Detroit 1967 only - Oct lastSun 2:00 0 S 96014343Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 96114343SwollmanZone America/Detroit -5:32:11 - LMT 1905 96214343Swollman -6:00 - CST 1915 May 15 2:00 96314343Swollman -5:00 - EST 1942 96414343Swollman -5:00 US E%sT 1946 96514343Swollman -5:00 Detroit E%sT 1973 96614343Swollman -5:00 US E%sT 1975 96714343Swollman -5:00 - EST 1975 Apr 27 2:00 96814343Swollman -5:00 US E%sT 96914343Swollman# 970158421Swollman# Dickinson, Gogebic, Iron, and Menominee Counties, Michigan, 971158421Swollman# switched from EST to CST/CDT in 1973. 97214343Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER 97314343SwollmanRule Menominee 1946 only - Apr lastSun 2:00 1:00 D 97414343SwollmanRule Menominee 1946 only - Sep lastSun 2:00 0 S 97514343SwollmanRule Menominee 1966 only - Apr lastSun 2:00 1:00 D 97614343SwollmanRule Menominee 1966 only - Oct lastSun 2:00 0 S 97714343Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 97814343SwollmanZone America/Menominee -5:50:27 - LMT 1885 Sep 18 12:00 97914343Swollman -6:00 US C%sT 1946 98014343Swollman -6:00 Menominee C%sT 1969 Apr 27 2:00 98114343Swollman -5:00 - EST 1973 Apr 29 2:00 98214343Swollman -6:00 US C%sT 98314343Swollman 9842742Swollman# Navassa 98586222Swollman# administered by the US Fish and Wildlife Service 98643543Swollman# claimed by US under the provisions of the 1856 Guano Islands Act 98743543Swollman# also claimed by Haiti 98843543Swollman# occupied 1857/1900 by the Navassa Phosphate Co 98986222Swollman# US lighthouse 1917/1996-09 99043543Swollman# currently uninhabited 99143543Swollman# see Mark Fineman, ``An Isle Rich in Guano and Discord'', 99243543Swollman# _Los Angeles Times_ (1998-11-10), A1, A10; it cites 99343543Swollman# Jimmy Skaggs, _The Great Guano Rush_ (1994). 99414343Swollman 9952742Swollman################################################################################ 9962742Swollman 9972742Swollman 998158421Swollman# From Paul Eggert (2006-03-22): 999158421Swollman# A good source for time zone historical data outside the U.S. is 1000158421Swollman# Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition), 1001158421Swollman# San Diego: ACS Publications, Inc. (2003). 10022742Swollman# 100386222Swollman# Gwillim Law writes that a good source 100420094Swollman# for recent time zone data is the International Air Transport 100520094Swollman# Association's Standard Schedules Information Manual (IATA SSIM), 100620094Swollman# published semiannually. Law sent in several helpful summaries 100720094Swollman# of the IATA's data after 1990. 100820094Swollman# 1009158421Swollman# Except where otherwise noted, Shanks & Pottenger is the source for 1010158421Swollman# entries through 1990, and IATA SSIM is the source for entries afterwards. 101120094Swollman# 1012121098Swollman# Other sources occasionally used include: 10132742Swollman# 1014121098Swollman# Edward W. Whitman, World Time Differences, 1015121098Swollman# Whitman Publishing Co, 2 Niagara Av, Ealing, London (undated), 1016121098Swollman# which I found in the UCLA library. 1017121098Swollman# 1018121098Swollman# <a href="http://www.pettswoodvillage.co.uk/Daylight_Savings_William_Willett.pdf"> 1019121098Swollman# William Willett, The Waste of Daylight, 19th edition 1020121098Swollman# </a> (1914-03) 1021121098Swollman# 10229908Swollman# See the `europe' file for Greenland. 10232742Swollman 10242742Swollman# Canada 10252742Swollman 1026149514Swollman# From Alain LaBont<e'> (1994-11-14): 10279908Swollman# I post here the time zone abbreviations standardized in Canada 10289908Swollman# for both English and French in the CAN/CSA-Z234.4-89 standard.... 10299908Swollman# 10309908Swollman# UTC Standard time Daylight savings time 10319908Swollman# offset French English French English 10329908Swollman# -2:30 - - HAT NDT 10339908Swollman# -3 - - HAA ADT 10349908Swollman# -3:30 HNT NST - - 10359908Swollman# -4 HNA AST HAE EDT 10369908Swollman# -5 HNE EST HAC CDT 10379908Swollman# -6 HNC CST HAR MDT 10389908Swollman# -7 HNR MST HAP PDT 10399908Swollman# -8 HNP PST HAY YDT 10409908Swollman# -9 HNY YST - - 10419908Swollman# 10429908Swollman# HN: Heure Normale ST: Standard Time 10439908Swollman# HA: Heure Avanc<e'>e DT: Daylight saving Time 10449908Swollman# 10459908Swollman# A: de l'Atlantique Atlantic 10469908Swollman# C: du Centre Central 10479908Swollman# E: de l'Est Eastern 10489908Swollman# M: Mountain 10499908Swollman# N: Newfoundland 10509908Swollman# P: du Pacifique Pacific 10519908Swollman# R: des Rocheuses 10529908Swollman# T: de Terre-Neuve 10539908Swollman# Y: du Yukon Yukon 10549908Swollman# 1055149514Swollman# From Paul Eggert (1994-11-22): 10569908Swollman# Alas, this sort of thing must be handled by localization software. 10572742Swollman 1058158421Swollman# Unless otherwise specified, the data for Canada are all from Shanks 1059158421Swollman# & Pottenger. 10609908Swollman 1061169811Swollman# From Chris Walton (2006-04-01, 2006-04-25, 2006-06-26, 2007-01-31, 1062169811Swollman# 2007-03-01): 1063158421Swollman# The British Columbia government announced yesterday that it will 1064158421Swollman# adjust daylight savings next year to align with changes in the 1065158421Swollman# U.S. and the rest of Canada.... 1066158421Swollman# http://www2.news.gov.bc.ca/news_releases_2005-2009/2006AG0014-000330.htm 1067169811Swollman# ... 1068169811Swollman# Nova Scotia 1069163302Sru# Daylight saving time will be extended by four weeks starting in 2007.... 1070169811Swollman# http://www.gov.ns.ca/just/regulations/rg2/2006/ma1206.pdf 1071169811Swollman# 1072163302Sru# [For New Brunswick] the new legislation dictates that the time change is to 1073163302Sru# be done at 02:00 instead of 00:01. 1074163302Sru# http://www.gnb.ca/0062/acts/BBA-2006/Chap-19.pdf 1075163302Sru# ... 1076163302Sru# Manitoba has traditionally changed the clock every fall at 03:00. 1077163302Sru# As of 2006, the transition is to take place one hour earlier at 02:00. 1078163302Sru# http://web2.gov.mb.ca/laws/statutes/ccsm/o030e.php 1079163302Sru# ... 1080163302Sru# [Alberta, Ontario, Quebec] will follow US rules. 1081169811Swollman# http://www.qp.gov.ab.ca/documents/spring/CH03_06.CFM 1082163302Sru# http://www.e-laws.gov.on.ca/DBLaws/Source/Regs/English/2006/R06111_e.htm 1083169811Swollman# http://www2.publicationsduquebec.gouv.qc.ca/dynamicSearch/telecharge.php?type=5&file=2006C39A.PDF 1084163302Sru# ... 1085169811Swollman# P.E.I. will follow US rules.... 1086169811Swollman# http://www.assembly.pe.ca/bills/pdf_chapter/62/3/chapter-41.pdf 1087163302Sru# ... 1088169811Swollman# Province of Newfoundland and Labrador.... 1089169811Swollman# http://www.hoa.gov.nl.ca/hoa/bills/Bill0634.htm 1090163302Sru# ... 1091169811Swollman# Yukon 1092169811Swollman# http://www.gov.yk.ca/legislation/regs/oic2006_127.pdf 1093169811Swollman# ... 1094163302Sru# N.W.T. will follow US rules. Whoever maintains the government web site 1095163302Sru# does not seem to believe in bookmarks. To see the news release, click the 1096163302Sru# following link and search for "Daylight Savings Time Change". Press the 1097163302Sru# "Daylight Savings Time Change" link; it will fire off a popup using 1098163302Sru# JavaScript. 1099163302Sru# http://www.exec.gov.nt.ca/currentnews/currentPR.asp?mode=archive 1100169811Swollman# ... 1101169811Swollman# Nunavut 1102169811Swollman# An amendment to the Interpretation Act was registered on February 19/2007.... 1103169811Swollman# http://action.attavik.ca/home/justice-gn/attach/2007/gaz02part2.pdf 1104163302Sru 1105158421Swollman# From Paul Eggert (2006-04-25): 110667578Swollman# H. David Matthews and Mary Vincent's map 1107153761Swollman# <a href="http://www.canadiangeographic.ca/Magazine/SO98/geomap.asp"> 110867578Swollman# "It's about TIME", _Canadian Geographic_ (September-October 1998) 110967578Swollman# </a> contains detailed boundaries for regions observing nonstandard 111067578Swollman# time and daylight saving time arrangements in Canada circa 1998. 111167578Swollman# 1112153761Swollman# INMS, the Institute for National Measurement Standards in Ottawa, has <a 1113153761Swollman# href="http://inms-ienm.nrc-cnrc.gc.ca/en/time_services/daylight_saving_e.php"> 111467578Swollman# information about standard and daylight saving time zones in Canada. 111567578Swollman# </a> (updated periodically). 111667578Swollman# Its unofficial information is often taken from Matthews and Vincent. 11179908Swollman 1118163302Sru# From Paul Eggert (2006-06-27): 1119163302Sru# For now, assume all of DST-observing Canada will fall into line with the 1120163302Sru# new US DST rules, 1121163302Sru 1122233447Sedwin# From Chris Walton (2011-12-01) 1123233447Sedwin# In the first of Tammy Hardwick's articles 1124233447Sedwin# <a href="http://www.ilovecreston.com/?p=articles&t=spec&ar=260"> 1125233447Sedwin# http://www.ilovecreston.com/?p=articles&t=spec&ar=260 1126233447Sedwin# </a> 1127233447Sedwin# she quotes the Friday November 1/1918 edition of the Creston Review. 1128233447Sedwin# The quote includes these two statements: 1129233447Sedwin# 'Sunday the CPR went back to the old system of time...' 1130233447Sedwin# '... The daylight saving scheme was dropped all over Canada at the same time,' 1131233447Sedwin# These statements refer to a transition from daylight time to standard time 1132233447Sedwin# that occurred nationally on Sunday October 27/1918. This transition was 1133233447Sedwin# also documented in the Saturday October 26/1918 edition of the Toronto Star. 1134233447Sedwin 1135233447Sedwin# In light of that evidence, we alter the date from the earlier believed 1136233447Sedwin# Oct 31, to Oct 27, 1918 (and Sunday is a more likely transition day 1137233447Sedwin# than Thursday) in all Canadian rulesets. 1138233447Sedwin 11392742Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 114017200SwollmanRule Canada 1918 only - Apr 14 2:00 1:00 D 1141233447SedwinRule Canada 1918 only - Oct 27 2:00 0 S 1142121098SwollmanRule Canada 1942 only - Feb 9 2:00 1:00 W # War 1143121098SwollmanRule Canada 1945 only - Aug 14 23:00u 1:00 P # Peace 114417200SwollmanRule Canada 1945 only - Sep 30 2:00 0 S 114517200SwollmanRule Canada 1974 1986 - Apr lastSun 2:00 1:00 D 1146153761SwollmanRule Canada 1974 2006 - Oct lastSun 2:00 0 S 1147153761SwollmanRule Canada 1987 2006 - Apr Sun>=1 2:00 1:00 D 1148153761SwollmanRule Canada 2007 max - Mar Sun>=8 2:00 1:00 D 1149153761SwollmanRule Canada 2007 max - Nov Sun>=1 2:00 0 S 115017200Swollman 115117200Swollman 1152163302Sru# Newfoundland and Labrador 115317200Swollman 115467578Swollman# From Paul Eggert (2000-10-02): 115567578Swollman# Matthews and Vincent (1998) write that Labrador should use NST/NDT, 115667578Swollman# but the only part of Labrador that follows the rules is the 115767578Swollman# southeast corner, including Port Hope Simpson and Mary's Harbour, 115867578Swollman# but excluding, say, Black Tickle. 115967578Swollman 116017200Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1161121098SwollmanRule StJohns 1917 only - Apr 8 2:00 1:00 D 11622742SwollmanRule StJohns 1917 only - Sep 17 2:00 0 S 1163158421Swollman# Whitman gives 1919 Apr 5 and 1920 Apr 5; go with Shanks & Pottenger. 11642742SwollmanRule StJohns 1919 only - May 5 23:00 1:00 D 11652742SwollmanRule StJohns 1919 only - Aug 12 23:00 0 S 1166158421Swollman# For 1931-1935 Whitman gives Apr same date; go with Shanks & Pottenger. 11672742SwollmanRule StJohns 1920 1935 - May Sun>=1 23:00 1:00 D 11682742SwollmanRule StJohns 1920 1935 - Oct lastSun 23:00 0 S 1169158421Swollman# For 1936-1941 Whitman gives May Sun>=8 and Oct Sun>=1; go with Shanks & 1170158421Swollman# Pottenger. 1171121098SwollmanRule StJohns 1936 1941 - May Mon>=9 0:00 1:00 D 1172121098SwollmanRule StJohns 1936 1941 - Oct Mon>=2 0:00 0 S 1173121098Swollman# Whitman gives the following transitions: 1174121098Swollman# 1942 03-01/12-31, 1943 05-30/09-05, 1944 07-10/09-02, 1945 01-01/10-07 1175158421Swollman# but go with Shanks & Pottenger and assume they used Canadian rules. 11762742Swollman# For 1946-9 Whitman gives May 5,4,9,1 - Oct 1,5,3,2, and for 1950 he gives 1177158421Swollman# Apr 30 - Sep 24; go with Shanks & Pottenger. 11782742SwollmanRule StJohns 1946 1950 - May Sun>=8 2:00 1:00 D 11792742SwollmanRule StJohns 1946 1950 - Oct Sun>=2 2:00 0 S 11802742SwollmanRule StJohns 1951 1986 - Apr lastSun 2:00 1:00 D 11812742SwollmanRule StJohns 1951 1959 - Sep lastSun 2:00 0 S 118267578SwollmanRule StJohns 1960 1986 - Oct lastSun 2:00 0 S 118367578Swollman# From Paul Eggert (2000-10-02): 118467578Swollman# INMS (2000-09-12) says that, since 1988 at least, Newfoundland switches 118567578Swollman# at 00:01 local time. For now, assume it started in 1987. 1186226298Sedwin 1187226298Sedwin# From Michael Pelley (2011-09-12): 1188226298Sedwin# We received today, Monday, September 12, 2011, notification that the 1189226298Sedwin# changes to the Newfoundland Standard Time Act have been proclaimed. 1190226298Sedwin# The change in the Act stipulates that the change from Daylight Savings 1191226298Sedwin# Time to Standard Time and from Standard Time to Daylight Savings Time 1192226298Sedwin# now occurs at 2:00AM. 1193226298Sedwin# ... 1194226298Sedwin# <a href="http://www.assembly.nl.ca/legislation/sr/annualstatutes/2011/1106.chp.htm"> 1195226298Sedwin# http://www.assembly.nl.ca/legislation/sr/annualstatutes/2011/1106.chp.htm 1196226298Sedwin# </a> 1197226298Sedwin# ... 1198226298Sedwin# MICHAEL PELLEY | Manager of Enterprise Architecture - Solution Delivery 1199226298Sedwin# Office of the Chief Information Officer 1200226298Sedwin# Executive Council 1201226298Sedwin# Government of Newfoundland & Labrador 1202226298Sedwin 120367578SwollmanRule StJohns 1987 only - Apr Sun>=1 0:01 1:00 D 1204158421SwollmanRule StJohns 1987 2006 - Oct lastSun 0:01 0 S 120567578SwollmanRule StJohns 1988 only - Apr Sun>=1 0:01 2:00 DD 1206158421SwollmanRule StJohns 1989 2006 - Apr Sun>=1 0:01 1:00 D 1207226298SedwinRule StJohns 2007 2011 - Mar Sun>=8 0:01 1:00 D 1208226298SedwinRule StJohns 2007 2010 - Nov Sun>=1 0:01 0 S 1209158421Swollman# 12102742Swollman# St John's has an apostrophe, but Posix file names can't have apostrophes. 12112742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 12122742SwollmanZone America/St_Johns -3:30:52 - LMT 1884 1213121098Swollman -3:30:52 StJohns N%sT 1918 1214121098Swollman -3:30:52 Canada N%sT 1919 121520094Swollman -3:30:52 StJohns N%sT 1935 Mar 30 1216121098Swollman -3:30 StJohns N%sT 1942 May 11 1217121098Swollman -3:30 Canada N%sT 1946 1218226298Sedwin -3:30 StJohns N%sT 2011 Nov 1219226298Sedwin -3:30 Canada N%sT 12202742Swollman 122167578Swollman# most of east Labrador 122217200Swollman 122320094Swollman# The name `Happy Valley-Goose Bay' is too long; use `Goose Bay'. 122420094Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 122520094SwollmanZone America/Goose_Bay -4:01:40 - LMT 1884 # Happy Valley-Goose Bay 1226121098Swollman -3:30:52 - NST 1918 1227121098Swollman -3:30:52 Canada N%sT 1919 122820094Swollman -3:30:52 - NST 1935 Mar 30 122920094Swollman -3:30 - NST 1936 1230121098Swollman -3:30 StJohns N%sT 1942 May 11 1231121098Swollman -3:30 Canada N%sT 1946 123220094Swollman -3:30 StJohns N%sT 1966 Mar 15 2:00 1233226298Sedwin -4:00 StJohns A%sT 2011 Nov 1234226298Sedwin -4:00 Canada A%sT 123520094Swollman 123620094Swollman 1237158421Swollman# west Labrador, Nova Scotia, Prince Edward I 123820094Swollman 1239158421Swollman# From Paul Eggert (2006-03-22): 1240158421Swollman# Shanks & Pottenger write that since 1970 most of this region has been like 1241158421Swollman# Halifax. Many locales did not observe peacetime DST until 1972; 124217200Swollman# Glace Bay, NS is the largest that we know of. 1243158421Swollman# Shanks & Pottenger also write that Liverpool, NS was the only town 1244158421Swollman# in Canada to observe DST in 1971 but not 1970; for now we'll assume 1245158421Swollman# this is a typo. 124617200Swollman 12472742Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1248158421SwollmanRule Halifax 1916 only - Apr 1 0:00 1:00 D 1249158421SwollmanRule Halifax 1916 only - Oct 1 0:00 0 S 1250158421SwollmanRule Halifax 1920 only - May 9 0:00 1:00 D 1251158421SwollmanRule Halifax 1920 only - Aug 29 0:00 0 S 1252158421SwollmanRule Halifax 1921 only - May 6 0:00 1:00 D 1253158421SwollmanRule Halifax 1921 1922 - Sep 5 0:00 0 S 1254158421SwollmanRule Halifax 1922 only - Apr 30 0:00 1:00 D 1255158421SwollmanRule Halifax 1923 1925 - May Sun>=1 0:00 1:00 D 1256158421SwollmanRule Halifax 1923 only - Sep 4 0:00 0 S 1257158421SwollmanRule Halifax 1924 only - Sep 15 0:00 0 S 1258158421SwollmanRule Halifax 1925 only - Sep 28 0:00 0 S 1259158421SwollmanRule Halifax 1926 only - May 16 0:00 1:00 D 1260158421SwollmanRule Halifax 1926 only - Sep 13 0:00 0 S 1261158421SwollmanRule Halifax 1927 only - May 1 0:00 1:00 D 1262158421SwollmanRule Halifax 1927 only - Sep 26 0:00 0 S 1263158421SwollmanRule Halifax 1928 1931 - May Sun>=8 0:00 1:00 D 1264158421SwollmanRule Halifax 1928 only - Sep 9 0:00 0 S 1265158421SwollmanRule Halifax 1929 only - Sep 3 0:00 0 S 1266158421SwollmanRule Halifax 1930 only - Sep 15 0:00 0 S 1267158421SwollmanRule Halifax 1931 1932 - Sep Mon>=24 0:00 0 S 1268158421SwollmanRule Halifax 1932 only - May 1 0:00 1:00 D 1269158421SwollmanRule Halifax 1933 only - Apr 30 0:00 1:00 D 1270158421SwollmanRule Halifax 1933 only - Oct 2 0:00 0 S 1271158421SwollmanRule Halifax 1934 only - May 20 0:00 1:00 D 1272158421SwollmanRule Halifax 1934 only - Sep 16 0:00 0 S 1273158421SwollmanRule Halifax 1935 only - Jun 2 0:00 1:00 D 1274158421SwollmanRule Halifax 1935 only - Sep 30 0:00 0 S 1275158421SwollmanRule Halifax 1936 only - Jun 1 0:00 1:00 D 1276158421SwollmanRule Halifax 1936 only - Sep 14 0:00 0 S 1277158421SwollmanRule Halifax 1937 1938 - May Sun>=1 0:00 1:00 D 1278158421SwollmanRule Halifax 1937 1941 - Sep Mon>=24 0:00 0 S 1279158421SwollmanRule Halifax 1939 only - May 28 0:00 1:00 D 1280158421SwollmanRule Halifax 1940 1941 - May Sun>=1 0:00 1:00 D 1281158421SwollmanRule Halifax 1946 1949 - Apr lastSun 2:00 1:00 D 1282158421SwollmanRule Halifax 1946 1949 - Sep lastSun 2:00 0 S 1283158421SwollmanRule Halifax 1951 1954 - Apr lastSun 2:00 1:00 D 1284158421SwollmanRule Halifax 1951 1954 - Sep lastSun 2:00 0 S 1285158421SwollmanRule Halifax 1956 1959 - Apr lastSun 2:00 1:00 D 1286158421SwollmanRule Halifax 1956 1959 - Sep lastSun 2:00 0 S 1287158421SwollmanRule Halifax 1962 1973 - Apr lastSun 2:00 1:00 D 1288158421SwollmanRule Halifax 1962 1973 - Oct lastSun 2:00 0 S 12892742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 12902742SwollmanZone America/Halifax -4:14:24 - LMT 1902 Jun 15 1291121098Swollman -4:00 Halifax A%sT 1918 1292121098Swollman -4:00 Canada A%sT 1919 1293121098Swollman -4:00 Halifax A%sT 1942 Feb 9 2:00s 1294121098Swollman -4:00 Canada A%sT 1946 1295121098Swollman -4:00 Halifax A%sT 1974 1296121098Swollman -4:00 Canada A%sT 129717200SwollmanZone America/Glace_Bay -3:59:48 - LMT 1902 Jun 15 129817200Swollman -4:00 Canada A%sT 1953 129917200Swollman -4:00 Halifax A%sT 1954 130017200Swollman -4:00 - AST 1972 1301121098Swollman -4:00 Halifax A%sT 1974 1302121098Swollman -4:00 Canada A%sT 13032742Swollman 1304158421Swollman# New Brunswick 13058029Swollman 1306169811Swollman# From Paul Eggert (2007-01-31): 1307169811Swollman# The Time Definition Act <http://www.gnb.ca/0062/PDF-acts/t-06.pdf> 1308169811Swollman# says they changed at 00:01 through 2006, and 1309158421Swollman# <http://www.canlii.org/nb/laws/sta/t-6/20030127/whole.html> makes it 1310169811Swollman# clear that this was the case since at least 1993. 1311163302Sru# For now, assume it started in 1993. 1312158421Swollman 1313158421Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1314158421SwollmanRule Moncton 1933 1935 - Jun Sun>=8 1:00 1:00 D 1315158421SwollmanRule Moncton 1933 1935 - Sep Sun>=8 1:00 0 S 1316158421SwollmanRule Moncton 1936 1938 - Jun Sun>=1 1:00 1:00 D 1317158421SwollmanRule Moncton 1936 1938 - Sep Sun>=1 1:00 0 S 1318158421SwollmanRule Moncton 1939 only - May 27 1:00 1:00 D 1319158421SwollmanRule Moncton 1939 1941 - Sep Sat>=21 1:00 0 S 1320158421SwollmanRule Moncton 1940 only - May 19 1:00 1:00 D 1321158421SwollmanRule Moncton 1941 only - May 4 1:00 1:00 D 1322158421SwollmanRule Moncton 1946 1972 - Apr lastSun 2:00 1:00 D 1323158421SwollmanRule Moncton 1946 1956 - Sep lastSun 2:00 0 S 1324158421SwollmanRule Moncton 1957 1972 - Oct lastSun 2:00 0 S 1325158421SwollmanRule Moncton 1993 2006 - Apr Sun>=1 0:01 1:00 D 1326158421SwollmanRule Moncton 1993 2006 - Oct lastSun 0:01 0 S 1327158421Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1328158421SwollmanZone America/Moncton -4:19:08 - LMT 1883 Dec 9 1329158421Swollman -5:00 - EST 1902 Jun 15 1330158421Swollman -4:00 Canada A%sT 1933 1331158421Swollman -4:00 Moncton A%sT 1942 1332158421Swollman -4:00 Canada A%sT 1946 1333158421Swollman -4:00 Moncton A%sT 1973 1334158421Swollman -4:00 Canada A%sT 1993 1335163302Sru -4:00 Moncton A%sT 2007 1336163302Sru -4:00 Canada A%sT 1337158421Swollman 1338163302Sru# Quebec 133917200Swollman 1340163302Sru# From Paul Eggert (2006-07-09): 1341163302Sru# Shanks & Pottenger write that since 1970 most of Quebec has been 1342163302Sru# like Montreal. 1343163302Sru 1344163302Sru# From Paul Eggert (2006-06-27): 1345163302Sru# Matthews and Vincent (1998) also write that Quebec east of the -63 1346163302Sru# meridian is supposed to observe AST, but residents as far east as 1347163302Sru# Natashquan use EST/EDT, and residents east of Natashquan use AST. 1348163302Sru# In "Official time in Quebec" the Quebec department of justice writes in 1349163302Sru# http://www.justice.gouv.qc.ca/english/publications/generale/temps-regl-1-a.htm 1350163302Sru# that "The residents of the Municipality of the 1351163302Sru# Cote-Nord-du-Golfe-Saint-Laurent and the municipalities of Saint-Augustin, 1352163302Sru# Bonne-Esperance and Blanc-Sablon apply the Official Time Act as it is 1353163302Sru# written and use Atlantic standard time all year round. The same applies to 1354163302Sru# the residents of the Native facilities along the lower North Shore." 1355163302Sru# <http://www.assnat.qc.ca/eng/37legislature2/Projets-loi/Publics/06-a002.htm> 1356163302Sru# says this common practice was codified into law as of 2007. 1357163302Sru# For lack of better info, guess this practice began around 1970, contra to 1358163302Sru# Shanks & Pottenger who have this region observing AST/ADT. 1359163302Sru 1360163302Sru# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1361163302SruRule Mont 1917 only - Mar 25 2:00 1:00 D 1362163302SruRule Mont 1917 only - Apr 24 0:00 0 S 1363163302SruRule Mont 1919 only - Mar 31 2:30 1:00 D 1364163302SruRule Mont 1919 only - Oct 25 2:30 0 S 1365163302SruRule Mont 1920 only - May 2 2:30 1:00 D 1366163302SruRule Mont 1920 1922 - Oct Sun>=1 2:30 0 S 1367163302SruRule Mont 1921 only - May 1 2:00 1:00 D 1368163302SruRule Mont 1922 only - Apr 30 2:00 1:00 D 1369163302SruRule Mont 1924 only - May 17 2:00 1:00 D 1370163302SruRule Mont 1924 1926 - Sep lastSun 2:30 0 S 1371163302SruRule Mont 1925 1926 - May Sun>=1 2:00 1:00 D 1372163302Sru# The 1927-to-1937 rules can be expressed more simply as 1373163302Sru# Rule Mont 1927 1937 - Apr lastSat 24:00 1:00 D 1374163302Sru# Rule Mont 1927 1937 - Sep lastSat 24:00 0 S 1375163302Sru# The rules below avoid use of 24:00 1376163302Sru# (which pre-1998 versions of zic cannot handle). 1377163302SruRule Mont 1927 only - May 1 0:00 1:00 D 1378163302SruRule Mont 1927 1932 - Sep lastSun 0:00 0 S 1379163302SruRule Mont 1928 1931 - Apr lastSun 0:00 1:00 D 1380163302SruRule Mont 1932 only - May 1 0:00 1:00 D 1381163302SruRule Mont 1933 1940 - Apr lastSun 0:00 1:00 D 1382163302SruRule Mont 1933 only - Oct 1 0:00 0 S 1383163302SruRule Mont 1934 1939 - Sep lastSun 0:00 0 S 1384163302SruRule Mont 1946 1973 - Apr lastSun 2:00 1:00 D 1385163302SruRule Mont 1945 1948 - Sep lastSun 2:00 0 S 1386163302SruRule Mont 1949 1950 - Oct lastSun 2:00 0 S 1387163302SruRule Mont 1951 1956 - Sep lastSun 2:00 0 S 1388163302SruRule Mont 1957 1973 - Oct lastSun 2:00 0 S 1389163302Sru 1390163302Sru# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1391163302SruZone America/Blanc-Sablon -3:48:28 - LMT 1884 1392163302Sru -4:00 Canada A%sT 1970 1393163302Sru -4:00 - AST 1394163302SruZone America/Montreal -4:54:16 - LMT 1884 1395163302Sru -5:00 Mont E%sT 1918 1396163302Sru -5:00 Canada E%sT 1919 1397163302Sru -5:00 Mont E%sT 1942 Feb 9 2:00s 1398163302Sru -5:00 Canada E%sT 1946 1399163302Sru -5:00 Mont E%sT 1974 1400163302Sru -5:00 Canada E%sT 1401163302Sru 1402163302Sru 1403163302Sru# Ontario 1404163302Sru 1405163302Sru# From Paul Eggert (2006-07-09): 1406163302Sru# Shanks & Pottenger write that since 1970 most of Ontario has been like 1407163302Sru# Toronto. 140817200Swollman# Thunder Bay skipped DST in 1973. 140917200Swollman# Many smaller locales did not observe peacetime DST until 1974; 141017200Swollman# Nipigon (EST) and Rainy River (CST) are the largest that we know of. 141117200Swollman# Far west Ontario is like Winnipeg; far east Quebec is like Halifax. 141217200Swollman 1413121098Swollman# From Mark Brader (2003-07-26): 1414121098Swollman# [According to the Toronto Star] Orillia, Ontario, adopted DST 1415121098Swollman# effective Saturday, 1912-06-22, 22:00; the article mentions that 1416121098Swollman# Port Arthur (now part of Thunder Bay, Ontario) as well as Moose Jaw 1417121098Swollman# have already done so. In Orillia DST was to run until Saturday, 1418121098Swollman# 1912-08-31 (no time mentioned), but it was met with considerable 1419121098Swollman# hostility from certain segments of the public, and was revoked after 1420121098Swollman# only two weeks -- I copied it as Saturday, 1912-07-07, 22:00, but 1421121098Swollman# presumably that should be -07-06. (1912-06-19, -07-12; also letters 1422121098Swollman# earlier in June). 1423121098Swollman# 1424121098Swollman# Kenora, Ontario, was to abandon DST on 1914-06-01 (-05-21). 1425121098Swollman 142643014Swollman# From Paul Eggert (1997-10-17): 1427121098Swollman# Mark Brader writes that an article in the 1997-10-14 Toronto Star 142843014Swollman# says that Atikokan, Ontario currently does not observe DST, 142943014Swollman# but will vote on 11-10 whether to use EST/EDT. 143043014Swollman# He also writes that the 143143014Swollman# <a href="http://www.gov.on.ca/MBS/english/publications/statregs/conttext.html"> 143243014Swollman# Ontario Time Act (1990, Chapter T.9) 143343014Swollman# </a> 143443014Swollman# says that Ontario east of 90W uses EST/EDT, and west of 90W uses CST/CDT. 143543014Swollman# Officially Atikokan is therefore on CST/CDT, and most likely this report 143643014Swollman# concerns a non-official time observed as a matter of local practice. 1437158421Swollman# 143867578Swollman# From Paul Eggert (2000-10-02): 143967578Swollman# Matthews and Vincent (1998) write that Atikokan, Pickle Lake, and 144067578Swollman# New Osnaburgh observe CST all year, that Big Trout Lake observes 144167578Swollman# CST/CDT, and that Upsala and Shebandowan observe EST/EDT, all in 144267578Swollman# violation of the official Ontario rules. 1443163302Sru# 1444163302Sru# From Paul Eggert (2006-07-09): 1445163302Sru# Chris Walton (2006-07-06) mentioned an article by Stephanie MacLellan in the 1446163302Sru# 2005-07-21 Chronicle-Journal, which said: 1447163302Sru# 1448163302Sru# The clocks in Atikokan stay set on standard time year-round. 1449163302Sru# This means they spend about half the time on central time and 1450163302Sru# the other half on eastern time. 1451163302Sru# 1452163302Sru# For the most part, the system works, Mayor Dennis Brown said. 1453163302Sru# 1454163302Sru# "The majority of businesses in Atikokan deal more with Eastern 1455163302Sru# Canada, but there are some that deal with Western Canada," he 1456163302Sru# said. "I don't see any changes happening here." 1457163302Sru# 1458163302Sru# Walton also writes "Supposedly Pickle Lake and Mishkeegogamang 1459163302Sru# [New Osnaburgh] follow the same practice." 146067578Swollman 1461163302Sru# From Garry McKinnon (2006-07-14) via Chris Walton: 1462163302Sru# I chatted with a member of my board who has an outstanding memory 1463163302Sru# and a long history in Atikokan (and in the telecom industry) and he 1464163302Sru# can say for certain that Atikokan has been practicing the current 1465163302Sru# time keeping since 1952, at least. 1466163302Sru 1467163302Sru# From Paul Eggert (2006-07-17): 1468163302Sru# Shanks & Pottenger say that Atikokan has agreed with Rainy River 1469163302Sru# ever since standard time was introduced, but the information from 1470163302Sru# McKinnon sounds more authoritative. For now, assume that Atikokan 1471163302Sru# switched to EST immediately after WWII era daylight saving time 1472163302Sru# ended. This matches the old (less-populous) America/Coral_Harbour 1473163302Sru# entry since our cutoff date of 1970, so we can move 1474163302Sru# America/Coral_Harbour to the 'backward' file. 1475163302Sru 1476210718Sedwin# From Mark Brader (2010-03-06): 1477210718Sedwin# 1478210718Sedwin# Currently the database has: 1479210718Sedwin# 1480210718Sedwin# # Ontario 1481210718Sedwin# 1482210718Sedwin# # From Paul Eggert (2006-07-09): 1483210718Sedwin# # Shanks & Pottenger write that since 1970 most of Ontario has been like 1484210718Sedwin# # Toronto. 1485210718Sedwin# # Thunder Bay skipped DST in 1973. 1486210718Sedwin# # Many smaller locales did not observe peacetime DST until 1974; 1487210718Sedwin# # Nipigon (EST) and Rainy River (CST) are the largest that we know of. 1488210718Sedwin# 1489210718Sedwin# In the (Toronto) Globe and Mail for Saturday, 1955-09-24, in the bottom 1490210718Sedwin# right corner of page 1, it says that Toronto will return to standard 1491210718Sedwin# time at 2 am Sunday morning (which agrees with the database), and that: 1492210718Sedwin# 1493210718Sedwin# The one-hour setback will go into effect throughout most of Ontario, 1494210718Sedwin# except in areas like Windsor which remains on standard time all year. 1495210718Sedwin# 1496210718Sedwin# Windsor is, of course, a lot larger than Nipigon. 1497210718Sedwin# 1498210718Sedwin# I only came across this incidentally. I don't know if Windsor began 1499210718Sedwin# observing DST when Detroit did, or in 1974, or on some other date. 1500210718Sedwin# 1501210718Sedwin# By the way, the article continues by noting that: 1502210718Sedwin# 1503210718Sedwin# Some cities in the United States have pushed the deadline back 1504210718Sedwin# three weeks and will change over from daylight saving in October. 1505210718Sedwin 1506210718Sedwin# From Arthur David Olson (2010-07-17): 1507210718Sedwin# 1508210718Sedwin# "Standard Time and Time Zones in Canada" appeared in 1509210718Sedwin# The Journal of The Royal Astronomical Society of Canada, 1510210718Sedwin# volume 26, number 2 (February 1932) and, as of 2010-07-17, 1511210718Sedwin# was available at 1512210718Sedwin# <a href="http://adsabs.harvard.edu/full/1932JRASC..26...49S"> 1513210718Sedwin# http://adsabs.harvard.edu/full/1932JRASC..26...49S 1514210718Sedwin# </a> 1515210718Sedwin# 1516210718Sedwin# It includes the text below (starting on page 57): 1517210718Sedwin# 1518210718Sedwin# A list of the places in Canada using daylight saving time would 1519210718Sedwin# require yearly revision. From information kindly furnished by 1520210718Sedwin# the provincial governments and by the postmasters in many cities 1521210718Sedwin# and towns, it is found that the following places used daylight sav- 1522210718Sedwin# ing in 1930. The information for the province of Quebec is definite, 1523210718Sedwin# for the other provinces only approximate: 1524210718Sedwin# 1525210718Sedwin# Province Daylight saving time used 1526210718Sedwin# Prince Edward Island Not used. 1527210718Sedwin# Nova Scotia In Halifax only. 1528210718Sedwin# New Brunswick In St. John only. 1529210718Sedwin# Quebec In the following places: 1530210718Sedwin# Montreal Lachine 1531210718Sedwin# Quebec Mont-Royal 1532210718Sedwin# Levis Iberville 1533210718Sedwin# St. Lambert Cap de la Madeleine 1534210718Sedwin# Verdun Loretteville 1535210718Sedwin# Westmount Richmond 1536210718Sedwin# Outremont St. Jerome 1537210718Sedwin# Longueuil Greenfield Park 1538210718Sedwin# Arvida Waterloo 1539210718Sedwin# Chambly-Canton Beaulieu 1540210718Sedwin# Melbourne La Tuque 1541210718Sedwin# St. Theophile Buckingham 1542210718Sedwin# Ontario Used generally in the cities and towns along 1543210718Sedwin# the southerly part of the province. Not 1544210718Sedwin# used in the northwesterlhy part. 1545210718Sedwin# Manitoba Not used. 1546210718Sedwin# Saskatchewan In Regina only. 1547210718Sedwin# Alberta Not used. 1548210718Sedwin# British Columbia Not used. 1549210718Sedwin# 1550210718Sedwin# With some exceptions, the use of daylight saving may be said to be limited 1551210718Sedwin# to those cities and towns lying between Quebec city and Windsor, Ont. 1552210718Sedwin 15532742Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1554121098SwollmanRule Toronto 1919 only - Mar 30 23:30 1:00 D 1555121098SwollmanRule Toronto 1919 only - Oct 26 0:00 0 S 1556121098SwollmanRule Toronto 1920 only - May 2 2:00 1:00 D 1557121098SwollmanRule Toronto 1920 only - Sep 26 0:00 0 S 1558121098SwollmanRule Toronto 1921 only - May 15 2:00 1:00 D 1559121098SwollmanRule Toronto 1921 only - Sep 15 2:00 0 S 1560121098SwollmanRule Toronto 1922 1923 - May Sun>=8 2:00 1:00 D 1561158421Swollman# Shanks & Pottenger say 1923-09-19; assume it's a typo and that "-16" 1562158421Swollman# was meant. 1563121098SwollmanRule Toronto 1922 1926 - Sep Sun>=15 2:00 0 S 1564121098SwollmanRule Toronto 1924 1927 - May Sun>=1 2:00 1:00 D 1565136638Swollman# The 1927-to-1939 rules can be expressed more simply as 1566136638Swollman# Rule Toronto 1927 1937 - Sep Sun>=25 2:00 0 S 1567136638Swollman# Rule Toronto 1928 1937 - Apr Sun>=25 2:00 1:00 D 1568136638Swollman# Rule Toronto 1938 1940 - Apr lastSun 2:00 1:00 D 1569136638Swollman# Rule Toronto 1938 1939 - Sep lastSun 2:00 0 S 1570136638Swollman# The rules below avoid use of Sun>=25 1571136638Swollman# (which pre-2004 versions of zic cannot handle). 1572136638SwollmanRule Toronto 1927 1932 - Sep lastSun 2:00 0 S 1573136638SwollmanRule Toronto 1928 1931 - Apr lastSun 2:00 1:00 D 1574136638SwollmanRule Toronto 1932 only - May 1 2:00 1:00 D 1575136638SwollmanRule Toronto 1933 1940 - Apr lastSun 2:00 1:00 D 1576136638SwollmanRule Toronto 1933 only - Oct 1 2:00 0 S 1577136638SwollmanRule Toronto 1934 1939 - Sep lastSun 2:00 0 S 1578121098SwollmanRule Toronto 1945 1946 - Sep lastSun 2:00 0 S 1579121098SwollmanRule Toronto 1946 only - Apr lastSun 2:00 1:00 D 1580121098SwollmanRule Toronto 1947 1949 - Apr lastSun 0:00 1:00 D 1581121098SwollmanRule Toronto 1947 1948 - Sep lastSun 0:00 0 S 1582121098SwollmanRule Toronto 1949 only - Nov lastSun 0:00 0 S 1583121098SwollmanRule Toronto 1950 1973 - Apr lastSun 2:00 1:00 D 1584121098SwollmanRule Toronto 1950 only - Nov lastSun 2:00 0 S 1585121098SwollmanRule Toronto 1951 1956 - Sep lastSun 2:00 0 S 1586158421Swollman# Shanks & Pottenger say Toronto ended DST a week early in 1971, 1587163302Sru# namely on 1971-10-24, but Mark Brader wrote (2003-05-31) that this 1588163302Sru# is wrong, and that he had confirmed it by checking the 1971-10-30 1589163302Sru# Toronto Star, which said that DST was ending 1971-10-31 as usual. 1590121098SwollmanRule Toronto 1957 1973 - Oct lastSun 2:00 0 S 1591121098Swollman 1592121098Swollman# From Paul Eggert (2003-07-27): 1593121098Swollman# Willett (1914-03) writes (p. 17) "In the Cities of Fort William, and 1594121098Swollman# Port Arthur, Ontario, the principle of the Bill has been in 1595121098Swollman# operation for the past three years, and in the City of Moose Jaw, 1596136638Swollman# Saskatchewan, for one year." 1597121098Swollman 1598136638Swollman# From David Bryan via Tory Tronrud, Director/Curator, 1599136638Swollman# Thunder Bay Museum (2003-11-12): 1600136638Swollman# There is some suggestion, however, that, by-law or not, daylight 1601136638Swollman# savings time was being practiced in Fort William and Port Arthur 1602136638Swollman# before 1909.... [I]n 1910, the line between the Eastern and Central 1603136638Swollman# Time Zones was permanently moved about two hundred miles west to 1604136638Swollman# include the Thunder Bay area.... When Canada adopted daylight 1605136638Swollman# savings time in 1916, Fort William and Port Arthur, having done so 1606136638Swollman# already, did not change their clocks.... During the Second World 1607136638Swollman# War,... [t]he cities agreed to implement DST during the summer 1608136638Swollman# months for the remainder of the war years. 1609136638Swollman 16102742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1611121098SwollmanZone America/Toronto -5:17:32 - LMT 1895 1612121098Swollman -5:00 Canada E%sT 1919 1613121098Swollman -5:00 Toronto E%sT 1942 Feb 9 2:00s 1614121098Swollman -5:00 Canada E%sT 1946 1615121098Swollman -5:00 Toronto E%sT 1974 1616121098Swollman -5:00 Canada E%sT 161717200SwollmanZone America/Thunder_Bay -5:57:00 - LMT 1895 1618136638Swollman -6:00 - CST 1910 1619136638Swollman -5:00 - EST 1942 162017200Swollman -5:00 Canada E%sT 1970 162117200Swollman -5:00 Mont E%sT 1973 162217200Swollman -5:00 - EST 1974 162317200Swollman -5:00 Canada E%sT 162417200SwollmanZone America/Nipigon -5:53:04 - LMT 1895 1625121098Swollman -5:00 Canada E%sT 1940 Sep 29 1626121098Swollman -5:00 1:00 EDT 1942 Feb 9 2:00s 162717200Swollman -5:00 Canada E%sT 1628163302SruZone America/Rainy_River -6:18:16 - LMT 1895 1629121098Swollman -6:00 Canada C%sT 1940 Sep 29 1630121098Swollman -6:00 1:00 CDT 1942 Feb 9 2:00s 163117200Swollman -6:00 Canada C%sT 1632163302SruZone America/Atikokan -6:06:28 - LMT 1895 1633163302Sru -6:00 Canada C%sT 1940 Sep 29 1634163302Sru -6:00 1:00 CDT 1942 Feb 9 2:00s 1635163302Sru -6:00 Canada C%sT 1945 Sep 30 2:00 1636163302Sru -5:00 - EST 16372742Swollman 16388029Swollman 163917200Swollman# Manitoba 164019878Swollman 1641158421Swollman# From Rob Douglas (2006-04-06): 1642158421Swollman# the old Manitoba Time Act - as amended by Bill 2, assented to 1643158421Swollman# March 27, 1987 ... said ... 1644158421Swollman# "between two o'clock Central Standard Time in the morning of 1645158421Swollman# the first Sunday of April of each year and two o'clock Central 1646158421Swollman# Standard Time in the morning of the last Sunday of October next 1647158421Swollman# following, one hour in advance of Central Standard Time."... 1648158421Swollman# I believe that the English legislation [of the old time act] had = 1649158421Swollman# been assented to (March 22, 1967).... 1650158421Swollman# Also, as far as I can tell, there was no order-in-council varying 1651158421Swollman# the time of Daylight Saving Time for 2005 and so the provisions of 1652158421Swollman# the 1987 version would apply - the changeover was at 2:00 Central 1653158421Swollman# Standard Time (i.e. not until 3:00 Central Daylight Time). 1654158421Swollman 1655158421Swollman# From Paul Eggert (2006-04-10): 1656158421Swollman# Shanks & Pottenger say Manitoba switched at 02:00 (not 02:00s) 1657158421Swollman# starting 1966. Since 02:00s is clearly correct for 1967 on, assume 1658158421Swollman# it was also 02:00s in 1966. 1659158421Swollman 16602742Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 16612742SwollmanRule Winn 1916 only - Apr 23 0:00 1:00 D 16622742SwollmanRule Winn 1916 only - Sep 17 0:00 0 S 16632742SwollmanRule Winn 1918 only - Apr 14 2:00 1:00 D 1664233447SedwinRule Winn 1918 only - Oct 27 2:00 0 S 16652742SwollmanRule Winn 1937 only - May 16 2:00 1:00 D 166614343SwollmanRule Winn 1937 only - Sep 26 2:00 0 S 1667121098SwollmanRule Winn 1942 only - Feb 9 2:00 1:00 W # War 1668121098SwollmanRule Winn 1945 only - Aug 14 23:00u 1:00 P # Peace 16692742SwollmanRule Winn 1945 only - Sep lastSun 2:00 0 S 16702742SwollmanRule Winn 1946 only - May 12 2:00 1:00 D 16712742SwollmanRule Winn 1946 only - Oct 13 2:00 0 S 16722742SwollmanRule Winn 1947 1949 - Apr lastSun 2:00 1:00 D 167314343SwollmanRule Winn 1947 1949 - Sep lastSun 2:00 0 S 167414343SwollmanRule Winn 1950 only - May 1 2:00 1:00 D 167514343SwollmanRule Winn 1950 only - Sep 30 2:00 0 S 167614343SwollmanRule Winn 1951 1960 - Apr lastSun 2:00 1:00 D 167714343SwollmanRule Winn 1951 1958 - Sep lastSun 2:00 0 S 16782742SwollmanRule Winn 1959 only - Oct lastSun 2:00 0 S 16792742SwollmanRule Winn 1960 only - Sep lastSun 2:00 0 S 16802742SwollmanRule Winn 1963 only - Apr lastSun 2:00 1:00 D 168114343SwollmanRule Winn 1963 only - Sep 22 2:00 0 S 1682158421SwollmanRule Winn 1966 1986 - Apr lastSun 2:00s 1:00 D 1683158421SwollmanRule Winn 1966 2005 - Oct lastSun 2:00s 0 S 1684158421SwollmanRule Winn 1987 2005 - Apr Sun>=1 2:00s 1:00 D 16852742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 16862742SwollmanZone America/Winnipeg -6:28:36 - LMT 1887 Jul 16 1687158421Swollman -6:00 Winn C%sT 2006 1688158421Swollman -6:00 Canada C%sT 16892742Swollman 16908029Swollman 169117200Swollman# Saskatchewan 169217200Swollman 1693121098Swollman# From Mark Brader (2003-07-26): 1694121098Swollman# The first actual adoption of DST in Canada was at the municipal 1695121098Swollman# level. As the [Toronto] Star put it (1912-06-07), "While people 1696121098Swollman# elsewhere have long been talking of legislation to save daylight, 1697121098Swollman# the city of Moose Jaw [Saskatchewan] has acted on its own hook." 1698121098Swollman# DST in Moose Jaw began on Saturday, 1912-06-01 (no time mentioned: 1699121098Swollman# presumably late evening, as below), and would run until "the end of 1700121098Swollman# the summer". The discrepancy between municipal time and railroad 1701121098Swollman# time was noted. 1702121098Swollman 1703121098Swollman# From Paul Eggert (2003-07-27): 1704121098Swollman# Willett (1914-03) notes that DST "has been in operation ... in the 1705121098Swollman# City of Moose Jaw, Saskatchewan, for one year." 1706121098Swollman 1707158421Swollman# From Paul Eggert (2006-03-22): 1708158421Swollman# Shanks & Pottenger say that since 1970 this region has mostly been as Regina. 170917200Swollman# Some western towns (e.g. Swift Current) switched from MST/MDT to CST in 1972. 171017200Swollman# Other western towns (e.g. Lloydminster) are like Edmonton. 171167578Swollman# Matthews and Vincent (1998) write that Denare Beach and Creighton 171267578Swollman# are like Winnipeg, in violation of Saskatchewan law. 171317200Swollman 1714149514Swollman# From W. Jones (1992-11-06): 171517200Swollman# The. . .below is based on information I got from our law library, the 171617200Swollman# provincial archives, and the provincial Community Services department. 171717200Swollman# A precise history would require digging through newspaper archives, and 171817200Swollman# since you didn't say what you wanted, I didn't bother. 171917200Swollman# 172017200Swollman# Saskatchewan is split by a time zone meridian (105W) and over the years 172117200Swollman# the boundary became pretty ragged as communities near it reevaluated 172217200Swollman# their affiliations in one direction or the other. In 1965 a provincial 172317200Swollman# referendum favoured legislating common time practices. 172417200Swollman# 172517200Swollman# On 15 April 1966 the Time Act (c. T-14, Revised Statutes of 172617200Swollman# Saskatchewan 1978) was proclaimed, and established that the eastern 172717200Swollman# part of Saskatchewan would use CST year round, that districts in 172817200Swollman# northwest Saskatchewan would by default follow CST but could opt to 172917200Swollman# follow Mountain Time rules (thus 1 hour difference in the winter and 173017200Swollman# zero in the summer), and that districts in southwest Saskatchewan would 173117200Swollman# by default follow MT but could opt to follow CST. 173217200Swollman# 173317200Swollman# It took a few years for the dust to settle (I know one story of a town 173417200Swollman# on one time zone having its school in another, such that a mom had to 173517200Swollman# serve her family lunch in two shifts), but presently it seems that only 173617200Swollman# a few towns on the border with Alberta (e.g. Lloydminster) follow MT 173717200Swollman# rules any more; all other districts appear to have used CST year round 173817200Swollman# since sometime in the 1960s. 173917200Swollman 1740163302Sru# From Chris Walton (2006-06-26): 1741163302Sru# The Saskatchewan time act which was last updated in 1996 is about 30 pages 1742163302Sru# long and rather painful to read. 1743163302Sru# http://www.qp.gov.sk.ca/documents/English/Statutes/Statutes/T14.pdf 1744163302Sru 17452742Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 17462742SwollmanRule Regina 1918 only - Apr 14 2:00 1:00 D 1747233447SedwinRule Regina 1918 only - Oct 27 2:00 0 S 17482742SwollmanRule Regina 1930 1934 - May Sun>=1 0:00 1:00 D 17492742SwollmanRule Regina 1930 1934 - Oct Sun>=1 0:00 0 S 17502742SwollmanRule Regina 1937 1941 - Apr Sun>=8 0:00 1:00 D 17512742SwollmanRule Regina 1937 only - Oct Sun>=8 0:00 0 S 17522742SwollmanRule Regina 1938 only - Oct Sun>=1 0:00 0 S 17532742SwollmanRule Regina 1939 1941 - Oct Sun>=8 0:00 0 S 1754121098SwollmanRule Regina 1942 only - Feb 9 2:00 1:00 W # War 1755121098SwollmanRule Regina 1945 only - Aug 14 23:00u 1:00 P # Peace 17562742SwollmanRule Regina 1945 only - Sep lastSun 2:00 0 S 175717200SwollmanRule Regina 1946 only - Apr Sun>=8 2:00 1:00 D 175817200SwollmanRule Regina 1946 only - Oct Sun>=8 2:00 0 S 1759121098SwollmanRule Regina 1947 1957 - Apr lastSun 2:00 1:00 D 1760121098SwollmanRule Regina 1947 1957 - Sep lastSun 2:00 0 S 1761121098SwollmanRule Regina 1959 only - Apr lastSun 2:00 1:00 D 176217200SwollmanRule Regina 1959 only - Oct lastSun 2:00 0 S 176317200Swollman# 176417200SwollmanRule Swift 1957 only - Apr lastSun 2:00 1:00 D 176517200SwollmanRule Swift 1957 only - Oct lastSun 2:00 0 S 176617200SwollmanRule Swift 1959 1961 - Apr lastSun 2:00 1:00 D 176717200SwollmanRule Swift 1959 only - Oct lastSun 2:00 0 S 176817200SwollmanRule Swift 1960 1961 - Sep lastSun 2:00 0 S 17692742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 177017200SwollmanZone America/Regina -6:58:36 - LMT 1905 Sep 177117200Swollman -7:00 Regina M%sT 1960 Apr lastSun 2:00 17722742Swollman -6:00 - CST 177317200SwollmanZone America/Swift_Current -7:11:20 - LMT 1905 Sep 177417200Swollman -7:00 Canada M%sT 1946 Apr lastSun 2:00 177517200Swollman -7:00 Regina M%sT 1950 177617200Swollman -7:00 Swift M%sT 1972 Apr lastSun 2:00 177717200Swollman -6:00 - CST 17782742Swollman 17798029Swollman 178017200Swollman# Alberta 178117200Swollman 17822742Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 17832742SwollmanRule Edm 1918 1919 - Apr Sun>=8 2:00 1:00 D 1784233447SedwinRule Edm 1918 only - Oct 27 2:00 0 S 17852742SwollmanRule Edm 1919 only - May 27 2:00 0 S 17862742SwollmanRule Edm 1920 1923 - Apr lastSun 2:00 1:00 D 17872742SwollmanRule Edm 1920 only - Oct lastSun 2:00 0 S 17882742SwollmanRule Edm 1921 1923 - Sep lastSun 2:00 0 S 1789121098SwollmanRule Edm 1942 only - Feb 9 2:00 1:00 W # War 1790121098SwollmanRule Edm 1945 only - Aug 14 23:00u 1:00 P # Peace 17912742SwollmanRule Edm 1945 only - Sep lastSun 2:00 0 S 17922742SwollmanRule Edm 1947 only - Apr lastSun 2:00 1:00 D 17932742SwollmanRule Edm 1947 only - Sep lastSun 2:00 0 S 17942742SwollmanRule Edm 1967 only - Apr lastSun 2:00 1:00 D 17952742SwollmanRule Edm 1967 only - Oct lastSun 2:00 0 S 17962742SwollmanRule Edm 1969 only - Apr lastSun 2:00 1:00 D 17972742SwollmanRule Edm 1969 only - Oct lastSun 2:00 0 S 17982742SwollmanRule Edm 1972 1986 - Apr lastSun 2:00 1:00 D 1799158421SwollmanRule Edm 1972 2006 - Oct lastSun 2:00 0 S 18002742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 18012742SwollmanZone America/Edmonton -7:33:52 - LMT 1906 Sep 1802158421Swollman -7:00 Edm M%sT 1987 1803158421Swollman -7:00 Canada M%sT 18042742Swollman 18058029Swollman 180617200Swollman# British Columbia 180717200Swollman 1808158421Swollman# From Paul Eggert (2006-03-22): 1809158421Swollman# Shanks & Pottenger write that since 1970 most of this region has 1810158421Swollman# been like Vancouver. 181158787Sru# Dawson Creek uses MST. Much of east BC is like Edmonton. 181267578Swollman# Matthews and Vincent (1998) write that Creston is like Dawson Creek. 181317200Swollman 1814233447Sedwin# It seems though that (re: Creston) is not entirely correct: 1815233447Sedwin 1816233447Sedwin# From Chris Walton (2011-12-01): 1817233447Sedwin# There are two areas within the Canadian province of British Columbia 1818233447Sedwin# that do not currently observe daylight saving: 1819233447Sedwin# a) The Creston Valley (includes the town of Creston and surrounding area) 1820233447Sedwin# b) The eastern half of the Peace River Regional District 1821233447Sedwin# (includes the cities of Dawson Creek and Fort St. John) 1822233447Sedwin 1823233447Sedwin# Earlier this year I stumbled across a detailed article about the time 1824233447Sedwin# keeping history of Creston; it was written by Tammy Hardwick who is the 1825233447Sedwin# manager of the Creston & District Museum. The article was written in May 2009. 1826233447Sedwin# <a href="http://www.ilovecreston.com/?p=articles&t=spec&ar=260"> 1827233447Sedwin# http://www.ilovecreston.com/?p=articles&t=spec&ar=260 1828233447Sedwin# </a> 1829233447Sedwin# According to the article, Creston has not changed its clocks since June 1918. 1830233447Sedwin# i.e. Creston has been stuck on UTC-7 for 93 years. 1831233447Sedwin# Dawson Creek, on the other hand, changed its clocks as recently as April 1972. 1832233447Sedwin 1833233447Sedwin# Unfortunately the exact date for the time change in June 1918 remains 1834233447Sedwin# unknown and will be difficult to ascertain. I e-mailed Tammy a few months 1835233447Sedwin# ago to ask if Sunday June 2 was a reasonable guess. She said it was just 1836233447Sedwin# as plausible as any other date (in June). She also said that after writing the 1837233447Sedwin# article she had discovered another time change in 1916; this is the subject 1838233447Sedwin# of another article which she wrote in October 2010. 1839233447Sedwin# <a href="http://www.creston.museum.bc.ca/index.php?module=comments&uop=view_comment&cm+id=56"> 1840233447Sedwin# http://www.creston.museum.bc.ca/index.php?module=comments&uop=view_comment&cm+id=56 1841233447Sedwin# </a> 1842233447Sedwin 1843233447Sedwin# Here is a summary of the three clock change events in Creston's history: 1844233447Sedwin# 1. 1884 or 1885: adoption of Mountain Standard Time (GMT-7) 1845233447Sedwin# Exact date unknown 1846240461Sedwin# 2. Oct 1916: switch to Pacific Standard Time (GMT-8) 1847233447Sedwin# Exact date in October unknown; Sunday October 1 is a reasonable guess. 1848233447Sedwin# 3. June 1918: switch to Pacific Daylight Time (GMT-7) 1849233447Sedwin# Exact date in June unknown; Sunday June 2 is a reasonable guess. 1850233447Sedwin# note#1: 1851233447Sedwin# On Oct 27/1918 when daylight saving ended in the rest of Canada, 1852233447Sedwin# Creston did not change its clocks. 1853233447Sedwin# note#2: 1854233447Sedwin# During WWII when the Federal Government legislated a mandatory clock change, 1855233447Sedwin# Creston did not oblige. 1856233447Sedwin# note#3: 1857233447Sedwin# There is no guarantee that Creston will remain on Mountain Standard Time 1858233447Sedwin# (UTC-7) forever. 1859233447Sedwin# The subject was debated at least once this year by the town Council. 1860233447Sedwin# <a href="http://www.bclocalnews.com/kootenay_rockies/crestonvalleyadvance/news/116760809.html"> 1861233447Sedwin# http://www.bclocalnews.com/kootenay_rockies/crestonvalleyadvance/news/116760809.html 1862233447Sedwin# </a> 1863233447Sedwin 1864233447Sedwin# During a period WWII, summer time (Daylight saying) was mandatory in Canada. 1865233447Sedwin# In Creston, that was handled by shifting the area to PST (-8:00) then applying 1866233447Sedwin# summer time to cause the offset to be -7:00, the same as it had been before 1867233447Sedwin# the change. It can be argued that the timezone abbreviation during this 1868233447Sedwin# period should be PDT rather than MST, but that doesn't seem important enough 1869233447Sedwin# (to anyone) to further complicate the rules. 1870233447Sedwin 1871233447Sedwin# The transition dates (and times) are guesses. 1872233447Sedwin 18732742Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 18742742SwollmanRule Vanc 1918 only - Apr 14 2:00 1:00 D 1875233447SedwinRule Vanc 1918 only - Oct 27 2:00 0 S 1876121098SwollmanRule Vanc 1942 only - Feb 9 2:00 1:00 W # War 1877121098SwollmanRule Vanc 1945 only - Aug 14 23:00u 1:00 P # Peace 18782742SwollmanRule Vanc 1945 only - Sep 30 2:00 0 S 18792742SwollmanRule Vanc 1946 1986 - Apr lastSun 2:00 1:00 D 18802742SwollmanRule Vanc 1946 only - Oct 13 2:00 0 S 18812742SwollmanRule Vanc 1947 1961 - Sep lastSun 2:00 0 S 1882158421SwollmanRule Vanc 1962 2006 - Oct lastSun 2:00 0 S 18832742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 18842742SwollmanZone America/Vancouver -8:12:28 - LMT 1884 1885158421Swollman -8:00 Vanc P%sT 1987 1886158421Swollman -8:00 Canada P%sT 188717200SwollmanZone America/Dawson_Creek -8:00:56 - LMT 1884 188817200Swollman -8:00 Canada P%sT 1947 188917200Swollman -8:00 Vanc P%sT 1972 Aug 30 2:00 189017200Swollman -7:00 - MST 1891233447SedwinZone America/Creston -7:46:04 - LMT 1884 1892233447Sedwin -7:00 - MST 1916 Oct 1 1893233447Sedwin -8:00 - PST 1918 Jun 2 1894233447Sedwin -7:00 - MST 18952742Swollman 189658787Sru# Northwest Territories, Nunavut, Yukon 189717200Swollman 1898158421Swollman# From Paul Eggert (2006-03-22): 189917200Swollman# Dawson switched to PST in 1973. Inuvik switched to MST in 1979. 1900149514Swollman# Mathew Englander (1996-10-07) gives the following refs: 190120094Swollman# * 1967. Paragraph 28(34)(g) of the Interpretation Act, S.C. 1967-68, 190220094Swollman# c. 7 defines Yukon standard time as UTC-9. This is still valid; 190320094Swollman# see Interpretation Act, R.S.C. 1985, c. I-21, s. 35(1). 190420094Swollman# * C.O. 1973/214 switched Yukon to PST on 1973-10-28 00:00. 190520094Swollman# * O.I.C. 1980/02 established DST. 190620094Swollman# * O.I.C. 1987/056 changed DST to Apr firstSun 2:00 to Oct lastSun 2:00. 1907158421Swollman# Shanks & Pottenger say Yukon's 1973-10-28 switch was at 2:00; go 1908158421Swollman# with Englander. 1909163302Sru# From Chris Walton (2006-06-26): 1910163302Sru# Here is a link to the old daylight saving portion of the interpretation 1911163302Sru# act which was last updated in 1987: 1912163302Sru# http://www.gov.yk.ca/legislation/regs/oic1987_056.pdf 191317200Swollman 191458787Sru# From Rives McDow (1999-09-04): 191558787Sru# Nunavut ... moved ... to incorporate the whole territory into one time zone. 191658787Sru# <a href="http://www.nunatsiaq.com/nunavut/nvt90903_13.html"> 191758787Sru# Nunavut moves to single time zone Oct. 31 191858787Sru# </a> 191958787Sru# 192058787Sru# From Antoine Leca (1999-09-06): 192158787Sru# We then need to create a new timezone for the Kitikmeot region of Nunavut 192258787Sru# to differentiate it from the Yellowknife region. 192358787Sru 192458787Sru# From Paul Eggert (1999-09-20): 192558787Sru# <a href="http://www.nunavut.com/basicfacts/english/basicfacts_1territory.html"> 192658787Sru# Basic Facts: The New Territory 192786222Swollman# </a> (1999) reports that Pangnirtung operates on eastern time, 192858787Sru# and that Coral Harbour does not observe DST. We don't know when 192986222Swollman# Pangnirtung switched to eastern time; we'll guess 1995. 193058787Sru 193158787Sru# From Rives McDow (1999-11-08): 193258787Sru# On October 31, when the rest of Nunavut went to Central time, 193358787Sru# Pangnirtung wobbled. Here is the result of their wobble: 193458787Sru# 193558787Sru# The following businesses and organizations in Pangnirtung use Central Time: 193658787Sru# 193758787Sru# First Air, Power Corp, Nunavut Construction, Health Center, RCMP, 193858787Sru# Eastern Arctic National Parks, A & D Specialist 193958787Sru# 194058787Sru# The following businesses and organizations in Pangnirtung use Eastern Time: 194158787Sru# 194258787Sru# Hamlet office, All other businesses, Both schools, Airport operator 194358787Sru# 194458787Sru# This has made for an interesting situation there, which warranted the news. 194558787Sru# No one there that I spoke with seems concerned, or has plans to 194658787Sru# change the local methods of keeping time, as it evidently does not 194758787Sru# really interfere with any activities or make things difficult locally. 194858787Sru# They plan to celebrate New Year's turn-over twice, one hour apart, 194958787Sru# so it appears that the situation will last at least that long. 195058787Sru# The Nunavut Intergovernmental Affairs hopes that they will "come to 195158787Sru# their senses", but the locals evidently don't see any problem with 195258787Sru# the current state of affairs. 195358787Sru 195458787Sru# From Michaela Rodrigue, writing in the 195558787Sru# <a href="http://www.nunatsiaq.com/archives/nunavut991130/nvt91119_17.html"> 195658787Sru# Nunatsiaq News (1999-11-19)</a>: 195758787Sru# Clyde River, Pangnirtung and Sanikiluaq now operate with two time zones, 195858787Sru# central - or Nunavut time - for government offices, and eastern time 195958787Sru# for municipal offices and schools.... Igloolik [was similar but then] 196058787Sru# made the switch to central time on Saturday, Nov. 6. 196158787Sru 196267578Swollman# From Paul Eggert (2000-10-02): 196367578Swollman# Matthews and Vincent (1998) say the following, but we lack histories 196467578Swollman# for these potential new Zones. 196575267Swollman# 196667578Swollman# The Canadian Forces station at Alert uses Eastern Time while the 196767578Swollman# handful of residents at the Eureka weather station [in the Central 196867578Swollman# zone] skip daylight savings. Baffin Island, which is crossed by the 196967578Swollman# Central, Eastern and Atlantic Time zones only uses Eastern Time. 197067578Swollman# Gjoa Haven, Taloyoak and Pelly Bay all use Mountain instead of 197167578Swollman# Central Time and Southampton Island [in the Central zone] is not 197267578Swollman# required to use daylight savings. 197367578Swollman 197475267Swollman# From 197575267Swollman# <a href="http://www.nunatsiaq.com/archives/nunavut001130/nvt21110_02.html"> 197675267Swollman# Nunavut now has two time zones 197775267Swollman# </a> (2000-11-10): 197875267Swollman# The Nunavut government would allow its employees in Kugluktuk and 197975267Swollman# Cambridge Bay to operate on central time year-round, putting them 198075267Swollman# one hour behind the rest of Nunavut for six months during the winter. 198175267Swollman# At the end of October the two communities had rebelled against 198275267Swollman# Nunavut's unified time zone, refusing to shift to eastern time with 198375267Swollman# the rest of the territory for the winter. Cambridge Bay remained on 198475267Swollman# central time, while Kugluktuk, even farther west, reverted to 198575267Swollman# mountain time, which they had used before the advent of Nunavut's 198675267Swollman# unified time zone in 1999. 198775267Swollman# 198875267Swollman# From Rives McDow (2001-01-20), quoting the Nunavut government: 198975267Swollman# The preceding decision came into effect at midnight, Saturday Nov 4, 2000. 199075267Swollman 199175267Swollman# From Paul Eggert (2000-12-04): 199275267Swollman# Let's just keep track of the official times for now. 199375267Swollman 199475267Swollman# From Rives McDow (2001-03-07): 199575267Swollman# The premier of Nunavut has issued a ministerial statement advising 199675267Swollman# that effective 2001-04-01, the territory of Nunavut will revert 199775267Swollman# back to three time zones (mountain, central, and eastern). Of the 199875267Swollman# cities in Nunavut, Coral Harbor is the only one that I know of that 199975267Swollman# has said it will not observe dst, staying on EST year round. I'm 200075267Swollman# checking for more info, and will get back to you if I come up with 200175267Swollman# more. 200275267Swollman# [Also see <http://www.nunatsiaq.com/nunavut/nvt10309_06.html> (2001-03-09).] 200375267Swollman 2004149514Swollman# From Gwillim Law (2005-05-21): 2005149514Swollman# According to maps at 2006149514Swollman# http://inms-ienm.nrc-cnrc.gc.ca/images/time_services/TZ01SWE.jpg 2007149514Swollman# http://inms-ienm.nrc-cnrc.gc.ca/images/time_services/TZ01SSE.jpg 2008149514Swollman# (both dated 2003), and 2009149514Swollman# http://www.canadiangeographic.ca/Magazine/SO98/geomap.asp 2010149514Swollman# (from a 1998 Canadian Geographic article), the de facto and de jure time 2011149514Swollman# for Southampton Island (at the north end of Hudson Bay) is UTC-5 all year 2012149514Swollman# round. Using Google, it's easy to find other websites that confirm this. 2013149514Swollman# I wasn't able to find how far back this time regimen goes, but since it 2014149514Swollman# predates the creation of Nunavut, it probably goes back many years.... 2015149514Swollman# The Inuktitut name of Coral Harbour is Sallit, but it's rarely used. 2016149514Swollman# 2017149514Swollman# From Paul Eggert (2005-07-26): 2018149514Swollman# For lack of better information, assume that Southampton Island observed 2019149514Swollman# daylight saving only during wartime. 2020149514Swollman 2021169811Swollman# From Chris Walton (2007-03-01): 2022169811Swollman# ... the community of Resolute (located on Cornwallis Island in 2023169811Swollman# Nunavut) moved from Central Time to Eastern Time last November. 2024169811Swollman# Basically the community did not change its clocks at the end of 2025169811Swollman# daylight saving.... 2026169811Swollman# http://www.nnsl.com/frames/newspapers/2006-11/nov13_06none.html 2027163302Sru 2028226298Sedwin# From Chris Walton (2011-03-21): 2029226298Sedwin# Back in 2007 I initiated the creation of a new "zone file" for Resolute 2030226298Sedwin# Bay. Resolute Bay is a small community located about 900km north of 2031226298Sedwin# the Arctic Circle. The zone file was required because Resolute Bay had 2032226298Sedwin# decided to use UTC-5 instead of UTC-6 for the winter of 2006-2007. 2033169811Swollman# 2034226298Sedwin# According to new information which I received last week, Resolute Bay 2035226298Sedwin# went back to using UTC-6 in the winter of 2007-2008... 2036226298Sedwin# 2037226298Sedwin# On March 11/2007 most of Canada went onto daylight saving. On March 2038226298Sedwin# 14/2007 I phoned the Resolute Bay hamlet office to do a "time check." I 2039226298Sedwin# talked to somebody that was both knowledgeable and helpful. I was able 2040226298Sedwin# to confirm that Resolute Bay was still operating on UTC-5. It was 2041226298Sedwin# explained to me that Resolute Bay had been on the Eastern Time zone 2042226298Sedwin# (EST) in the winter, and was now back on the Central Time zone (CDT). 2043226298Sedwin# i.e. the time zone had changed twice in the last year but the clocks 2044226298Sedwin# had not moved. The residents had to know which time zone they were in 2045226298Sedwin# so they could follow the correct TV schedule... 2046226298Sedwin# 2047226298Sedwin# On Nov 02/2008 most of Canada went onto standard time. On Nov 03/2008 I 2048226298Sedwin# phoned the Resolute Bay hamlet office...[D]ue to the challenging nature 2049226298Sedwin# of the phone call, I decided to seek out an alternate source of 2050226298Sedwin# information. I found an e-mail address for somebody by the name of 2051226298Sedwin# Stephanie Adams whose job was listed as "Inns North Support Officer for 2052226298Sedwin# Arctic Co-operatives." I was under the impression that Stephanie lived 2053226298Sedwin# and worked in Resolute Bay... 2054226298Sedwin# 2055226298Sedwin# On March 14/2011 I phoned the hamlet office again. I was told that 2056226298Sedwin# Resolute Bay had been using Central Standard Time over the winter of 2057226298Sedwin# 2010-2011 and that the clocks had therefore been moved one hour ahead 2058226298Sedwin# on March 13/2011. The person I talked to was aware that Resolute Bay 2059226298Sedwin# had previously experimented with Eastern Standard Time but he could not 2060226298Sedwin# tell me when the practice had stopped. 2061226298Sedwin# 2062226298Sedwin# On March 17/2011 I searched the Web to find an e-mail address of 2063226298Sedwin# somebody that might be able to tell me exactly when Resolute Bay went 2064226298Sedwin# off Eastern Standard Time. I stumbled on the name "Aziz Kheraj." Aziz 2065226298Sedwin# used to be the mayor of Resolute Bay and he apparently owns half the 2066226298Sedwin# businesses including "South Camp Inn." This website has some info on 2067226298Sedwin# Aziz: 2068226298Sedwin# <a href="http://www.uphere.ca/node/493"> 2069226298Sedwin# http://www.uphere.ca/node/493 2070226298Sedwin# </a> 2071226298Sedwin# 2072226298Sedwin# I sent Aziz an e-mail asking when Resolute Bay had stopped using 2073226298Sedwin# Eastern Standard Time. 2074226298Sedwin# 2075226298Sedwin# Aziz responded quickly with this: "hi, The time was not changed for the 2076226298Sedwin# 1 year only, the following year, the community went back to the old way 2077226298Sedwin# of "spring ahead-fall behind" currently we are zulu plus 5 hrs and in 2078226298Sedwin# the winter Zulu plus 6 hrs" 2079226298Sedwin# 2080226298Sedwin# This of course conflicted with everything I had ascertained in November 2008. 2081226298Sedwin# 2082226298Sedwin# I sent Aziz a copy of my 2008 e-mail exchange with Stephanie. Aziz 2083226298Sedwin# responded with this: "Hi, Stephanie lives in Winnipeg. I live here, You 2084226298Sedwin# may want to check with the weather office in Resolute Bay or do a 2085226298Sedwin# search on the weather through Env. Canada. web site" 2086226298Sedwin# 2087226298Sedwin# If I had realized the Stephanie did not live in Resolute Bay I would 2088226298Sedwin# never have contacted her. I now believe that all the information I 2089226298Sedwin# obtained in November 2008 should be ignored... 2090226298Sedwin# I apologize for reporting incorrect information in 2008. 2091169811Swollman 20922742Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 209317200SwollmanRule NT_YK 1918 only - Apr 14 2:00 1:00 D 209417200SwollmanRule NT_YK 1918 only - Oct 27 2:00 0 S 209517200SwollmanRule NT_YK 1919 only - May 25 2:00 1:00 D 209617200SwollmanRule NT_YK 1919 only - Nov 1 0:00 0 S 2097121098SwollmanRule NT_YK 1942 only - Feb 9 2:00 1:00 W # War 2098121098SwollmanRule NT_YK 1945 only - Aug 14 23:00u 1:00 P # Peace 209917200SwollmanRule NT_YK 1945 only - Sep 30 2:00 0 S 210017200SwollmanRule NT_YK 1965 only - Apr lastSun 0:00 2:00 DD 210117200SwollmanRule NT_YK 1965 only - Oct lastSun 2:00 0 S 210217200SwollmanRule NT_YK 1980 1986 - Apr lastSun 2:00 1:00 D 2103158421SwollmanRule NT_YK 1980 2006 - Oct lastSun 2:00 0 S 2104158421SwollmanRule NT_YK 1987 2006 - Apr Sun>=1 2:00 1:00 D 21052742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 2106169811Swollman# aka Panniqtuuq 2107169811SwollmanZone America/Pangnirtung 0 - zzz 1921 # trading post est. 210858787Sru -4:00 NT_YK A%sT 1995 Apr Sun>=1 2:00 210958787Sru -5:00 Canada E%sT 1999 Oct 31 2:00 211075267Swollman -6:00 Canada C%sT 2000 Oct 29 2:00 211175267Swollman -5:00 Canada E%sT 2112169811Swollman# formerly Frobisher Bay 2113169811SwollmanZone America/Iqaluit 0 - zzz 1942 Aug # Frobisher Bay est. 211458787Sru -5:00 NT_YK E%sT 1999 Oct 31 2:00 211575267Swollman -6:00 Canada C%sT 2000 Oct 29 2:00 211675267Swollman -5:00 Canada E%sT 2117169811Swollman# aka Qausuittuq 2118169811SwollmanZone America/Resolute 0 - zzz 1947 Aug 31 # Resolute founded 211975267Swollman -6:00 NT_YK C%sT 2000 Oct 29 2:00 212075267Swollman -5:00 - EST 2001 Apr 1 3:00 2121169811Swollman -6:00 Canada C%sT 2006 Oct 29 2:00 2122226298Sedwin -5:00 - EST 2007 Mar 11 3:00 2123226298Sedwin -6:00 Canada C%sT 2124169811Swollman# aka Kangiqiniq 2125169811SwollmanZone America/Rankin_Inlet 0 - zzz 1957 # Rankin Inlet founded 2126169811Swollman -6:00 NT_YK C%sT 2000 Oct 29 2:00 2127169811Swollman -5:00 - EST 2001 Apr 1 3:00 212858787Sru -6:00 Canada C%sT 2129169811Swollman# aka Iqaluktuuttiaq 2130169811SwollmanZone America/Cambridge_Bay 0 - zzz 1920 # trading post est.? 213158787Sru -7:00 NT_YK M%sT 1999 Oct 31 2:00 213275267Swollman -6:00 Canada C%sT 2000 Oct 29 2:00 213375267Swollman -5:00 - EST 2000 Nov 5 0:00 213475267Swollman -6:00 - CST 2001 Apr 1 3:00 213575267Swollman -7:00 Canada M%sT 2136169811SwollmanZone America/Yellowknife 0 - zzz 1935 # Yellowknife founded? 2137158421Swollman -7:00 NT_YK M%sT 1980 2138158421Swollman -7:00 Canada M%sT 2139169811SwollmanZone America/Inuvik 0 - zzz 1953 # Inuvik founded 214017200Swollman -8:00 NT_YK P%sT 1979 Apr lastSun 2:00 2141158421Swollman -7:00 NT_YK M%sT 1980 2142158421Swollman -7:00 Canada M%sT 21432742SwollmanZone America/Whitehorse -9:00:12 - LMT 1900 Aug 20 214417200Swollman -9:00 NT_YK Y%sT 1966 Jul 1 2:00 2145158421Swollman -8:00 NT_YK P%sT 1980 2146158421Swollman -8:00 Canada P%sT 214717200SwollmanZone America/Dawson -9:17:40 - LMT 1900 Aug 20 214820094Swollman -9:00 NT_YK Y%sT 1973 Oct 28 0:00 2149158421Swollman -8:00 NT_YK P%sT 1980 2150158421Swollman -8:00 Canada P%sT 21512742Swollman 21528029Swollman 21532742Swollman############################################################################### 21542742Swollman 21552742Swollman# Mexico 21562742Swollman 215775267Swollman# From Paul Eggert (2001-03-05): 215875267Swollman# The Investigation and Analysis Service of the 215975267Swollman# Mexican Library of Congress (MLoC) has published a 216075267Swollman# <a href="http://www.cddhcu.gob.mx/bibliot/publica/inveyana/polisoc/horver/"> 216175267Swollman# history of Mexican local time (in Spanish) 216275267Swollman# </a>. 21632742Swollman# 2164158421Swollman# Here are the discrepancies between Shanks & Pottenger (S&P) and the MLoC. 216575267Swollman# (In all cases we go with the MLoC.) 2166158421Swollman# S&P report that Baja was at -8:00 in 1922/1923. 2167158421Swollman# S&P say the 1930 transition in Baja was 1930-11-16. 2168158421Swollman# S&P report no DST during summer 1931. 2169158421Swollman# S&P report a transition at 1932-03-30 23:00, not 1932-04-01. 21702742Swollman 217175267Swollman# From Gwillim Law (2001-02-20): 217275267Swollman# There are some other discrepancies between the Decrees page and the 217375267Swollman# tz database. I think they can best be explained by supposing that 217475267Swollman# the researchers who prepared the Decrees page failed to find some of 217575267Swollman# the relevant documents. 217675267Swollman 2177149514Swollman# From Alan Perry (1996-02-15): 217817200Swollman# A guy from our Mexico subsidiary finally found the Presidential Decree 217917200Swollman# outlining the timezone changes in Mexico. 218058787Sru# 218117200Swollman# ------------- Begin Forwarded Message ------------- 218258787Sru# 218317200Swollman# I finally got my hands on the Official Presidential Decree that sets up the 218417200Swollman# rules for the DST changes. The rules are: 218558787Sru# 218617200Swollman# 1. The country is divided in 3 timezones: 218717200Swollman# - Baja California Norte (the Mexico/BajaNorte TZ) 218817200Swollman# - Baja California Sur, Nayarit, Sinaloa and Sonora (the Mexico/BajaSur TZ) 218917200Swollman# - The rest of the country (the Mexico/General TZ) 219058787Sru# 219117200Swollman# 2. From the first Sunday in April at 2:00 AM to the last Sunday in October 219217200Swollman# at 2:00 AM, the times in each zone are as follows: 219317200Swollman# BajaNorte: GMT+7 219417200Swollman# BajaSur: GMT+6 219517200Swollman# General: GMT+5 219658787Sru# 219717200Swollman# 3. The rest of the year, the times are as follows: 219817200Swollman# BajaNorte: GMT+8 219917200Swollman# BajaSur: GMT+7 220017200Swollman# General: GMT+6 220158787Sru# 220217200Swollman# The Decree was published in Mexico's Official Newspaper on January 4th. 220358787Sru# 220417200Swollman# -------------- End Forwarded Message -------------- 220517200Swollman# From Paul Eggert (1996-06-12): 220643014Swollman# For an English translation of the decree, see 220743014Swollman# <a href="http://mexico-travel.com/extra/timezone_eng.html"> 220843014Swollman# ``Diario Oficial: Time Zone Changeover'' (1996-01-04). 220943014Swollman# </a> 221014343Swollman 221143543Swollman# From Rives McDow (1998-10-08): 221243543Swollman# The State of Quintana Roo has reverted back to central STD and DST times 221343543Swollman# (i.e. UTC -0600 and -0500 as of 1998-08-02). 221443543Swollman 221558787Sru# From Rives McDow (2000-01-10): 221658787Sru# Effective April 4, 1999 at 2:00 AM local time, Sonora changed to the time 221758787Sru# zone 5 hours from the International Date Line, and will not observe daylight 221858787Sru# savings time so as to stay on the same time zone as the southern part of 221958787Sru# Arizona year round. 222058787Sru 222175267Swollman# From Jesper Norgaard, translating 222275267Swollman# <http://www.reforma.com/nacional/articulo/064327/> (2001-01-17): 222375267Swollman# In Oaxaca, the 55.000 teachers from the Section 22 of the National 222475267Swollman# Syndicate of Education Workers, refuse to apply daylight saving each 222575267Swollman# year, so that the more than 10,000 schools work at normal hour the 222675267Swollman# whole year. 222775267Swollman 222875267Swollman# From Gwillim Law (2001-01-19): 222975267Swollman# <http://www.reforma.com/negocios_y_dinero/articulo/064481/> ... says 223075267Swollman# (translated):... 223175267Swollman# January 17, 2000 - The Energy Secretary, Ernesto Martens, announced 223275267Swollman# that Summer Time will be reduced from seven to five months, starting 223375267Swollman# this year.... 223475267Swollman# <http://www.publico.com.mx/scripts/texto3.asp?action=pagina&pag=21&pos=p&secc=naci&date=01/17/2001> 223575267Swollman# [translated], says "summer time will ... take effect on the first Sunday 223675267Swollman# in May, and end on the last Sunday of September. 223775267Swollman 223875267Swollman# From Arthur David Olson (2001-01-25): 223975267Swollman# The 2001-01-24 traditional Washington Post contained the page one 224075267Swollman# story "Timely Issue Divides Mexicans."... 224175267Swollman# http://www.washingtonpost.com/wp-dyn/articles/A37383-2001Jan23.html 224275267Swollman# ... Mexico City Mayor Lopez Obrador "...is threatening to keep 224375267Swollman# Mexico City and its 20 million residents on a different time than 224475267Swollman# the rest of the country..." In particular, Lopez Obrador would abolish 224575267Swollman# observation of Daylight Saving Time. 224675267Swollman 224775267Swollman# <a href="http://www.conae.gob.mx/ahorro/decretohorver2001.html#decre"> 224875267Swollman# Official statute published by the Energy Department 224975267Swollman# </a> (2001-02-01) shows Baja and Chihauhua as still using US DST rules, 225075267Swollman# and Sonora with no DST. This was reported by Jesper Norgaard (2001-02-03). 225175267Swollman 225275267Swollman# From Paul Eggert (2001-03-03): 225375267Swollman# 225475267Swollman# <a href="http://www.latimes.com/news/nation/20010303/t000018766.html"> 225575267Swollman# James F. Smith writes in today's LA Times 225675267Swollman# </a> 225775267Swollman# * Sonora will continue to observe standard time. 225875267Swollman# * Last week Mexico City's mayor Andres Manuel Lopez Obrador decreed that 225975267Swollman# the Federal District will not adopt DST. 226075267Swollman# * 4 of 16 district leaders announced they'll ignore the decree. 226175267Swollman# * The decree does not affect federal-controlled facilities including 226275267Swollman# the airport, banks, hospitals, and schools. 226375267Swollman# 226475267Swollman# For now we'll assume that the Federal District will bow to federal rules. 226575267Swollman 226675267Swollman# From Jesper Norgaard (2001-04-01): 226775267Swollman# I found some references to the Mexican application of daylight 226875267Swollman# saving, which modifies what I had already sent you, stating earlier 226975267Swollman# that a number of northern Mexican states would go on daylight 227075267Swollman# saving. The modification reverts this to only cover Baja California 227175267Swollman# (Norte), while all other states (except Sonora, who has no daylight 227275267Swollman# saving all year) will follow the original decree of president 227375267Swollman# Vicente Fox, starting daylight saving May 6, 2001 and ending 227475267Swollman# September 30, 2001. 227575267Swollman# References: "Diario de Monterrey" <www.diariodemonterrey.com/index.asp> 227675267Swollman# Palabra <http://palabra.infosel.com/010331/primera/ppri3101.pdf> (2001-03-31) 227775267Swollman 227886222Swollman# From Reuters (2001-09-04): 227986222Swollman# Mexico's Supreme Court on Tuesday declared that daylight savings was 228086222Swollman# unconstitutional in Mexico City, creating the possibility the 228186222Swollman# capital will be in a different time zone from the rest of the nation 228286222Swollman# next year.... The Supreme Court's ruling takes effect at 2:00 228386222Swollman# a.m. (0800 GMT) on Sept. 30, when Mexico is scheduled to revert to 228486222Swollman# standard time. "This is so residents of the Federal District are not 228586222Swollman# subject to unexpected time changes," a statement from the court said. 228686222Swollman 228793799Swollman# From Jesper Norgaard Welen (2002-03-12): 228893799Swollman# ... consulting my local grocery store(!) and my coworkers, they all insisted 228993799Swollman# that a new decision had been made to reinstate US style DST in Mexico.... 229093799Swollman# http://www.conae.gob.mx/ahorro/horaver2001_m1_2002.html (2002-02-20) 229193799Swollman# confirms this. Sonora as usual is the only state where DST is not applied. 229293799Swollman 2293203019Sedwin# From Steffen Thorsen (2009-12-28): 2294203019Sedwin# 2295203019Sedwin# Steffen Thorsen wrote: 2296203019Sedwin# > Mexico's House of Representatives has approved a proposal for northern 2297203019Sedwin# > Mexico's border cities to share the same daylight saving schedule as 2298203019Sedwin# > the United States. 2299203019Sedwin# Now this has passed both the Congress and the Senate, so starting from 2300203019Sedwin# 2010, some border regions will be the same: 2301203019Sedwin# <a href="http://www.signonsandiego.com/news/2009/dec/28/clocks-will-match-both-sides-border/"> 2302203019Sedwin# http://www.signonsandiego.com/news/2009/dec/28/clocks-will-match-both-sides-border/ 2303203019Sedwin# </a> 2304203019Sedwin# <a href="http://www.elmananarey.com/diario/noticia/nacional/noticias/empatan_horario_de_frontera_con_eu/621939"> 2305203019Sedwin# http://www.elmananarey.com/diario/noticia/nacional/noticias/empatan_horario_de_frontera_con_eu/621939 2306203019Sedwin# </a> 2307203019Sedwin# (Spanish) 2308203019Sedwin# 2309203019Sedwin# Could not find the new law text, but the proposed law text changes are here: 2310203019Sedwin# <a href="http://gaceta.diputados.gob.mx/Gaceta/61/2009/dic/20091210-V.pdf"> 2311203019Sedwin# http://gaceta.diputados.gob.mx/Gaceta/61/2009/dic/20091210-V.pdf 2312203019Sedwin# </a> 2313203019Sedwin# (Gaceta Parlamentaria) 2314203019Sedwin# 2315203019Sedwin# There is also a list of the votes here: 2316203019Sedwin# <a href="http://gaceta.diputados.gob.mx/Gaceta/61/2009/dic/V2-101209.html"> 2317203019Sedwin# http://gaceta.diputados.gob.mx/Gaceta/61/2009/dic/V2-101209.html 2318203019Sedwin# </a> 2319203019Sedwin# 2320203019Sedwin# Our page: 2321203019Sedwin# <a href="http://www.timeanddate.com/news/time/north-mexico-dst-change.html"> 2322203019Sedwin# http://www.timeanddate.com/news/time/north-mexico-dst-change.html 2323203019Sedwin# </a> 2324203019Sedwin 2325203019Sedwin# From Arthur David Olson (2010-01-20): 2326203019Sedwin# The page 2327203019Sedwin# <a href="http://dof.gob.mx/nota_detalle.php?codigo=5127480&fecha=06/01/2010"> 2328203019Sedwin# http://dof.gob.mx/nota_detalle.php?codigo=5127480&fecha=06/01/2010 2329203019Sedwin# </a> 2330203019Sedwin# includes this text: 2331203019Sedwin# En los municipios fronterizos de Tijuana y Mexicali en Baja California; 2332203019Sedwin# Juárez y Ojinaga en Chihuahua; Acuña y Piedras Negras en Coahuila; 2333203019Sedwin# Anáhuac en Nuevo León; y Nuevo Laredo, Reynosa y Matamoros en 2334203019Sedwin# Tamaulipas, la aplicación de este horario estacional surtirá efecto 2335203019Sedwin# desde las dos horas del segundo domingo de marzo y concluirá a las dos 2336203019Sedwin# horas del primer domingo de noviembre. 2337203019Sedwin# En los municipios fronterizos que se encuentren ubicados en la franja 2338203019Sedwin# fronteriza norte en el territorio comprendido entre la línea 2339203019Sedwin# internacional y la línea paralela ubicada a una distancia de veinte 2340203019Sedwin# kilómetros, así como la Ciudad de Ensenada, Baja California, hacia el 2341203019Sedwin# interior del país, la aplicación de este horario estacional surtirá 2342203019Sedwin# efecto desde las dos horas del segundo domingo de marzo y concluirá a 2343203019Sedwin# las dos horas del primer domingo de noviembre. 2344203019Sedwin 23452742Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 23462742SwollmanRule Mexico 1939 only - Feb 5 0:00 1:00 D 23472742SwollmanRule Mexico 1939 only - Jun 25 0:00 0 S 23482742SwollmanRule Mexico 1940 only - Dec 9 0:00 1:00 D 23492742SwollmanRule Mexico 1941 only - Apr 1 0:00 0 S 2350121098SwollmanRule Mexico 1943 only - Dec 16 0:00 1:00 W # War 23512742SwollmanRule Mexico 1944 only - May 1 0:00 0 S 23522742SwollmanRule Mexico 1950 only - Feb 12 0:00 1:00 D 23532742SwollmanRule Mexico 1950 only - Jul 30 0:00 0 S 235475267SwollmanRule Mexico 1996 2000 - Apr Sun>=1 2:00 1:00 D 235575267SwollmanRule Mexico 1996 2000 - Oct lastSun 2:00 0 S 235693799SwollmanRule Mexico 2001 only - May Sun>=1 2:00 1:00 D 235793799SwollmanRule Mexico 2001 only - Sep lastSun 2:00 0 S 235893799SwollmanRule Mexico 2002 max - Apr Sun>=1 2:00 1:00 D 235993799SwollmanRule Mexico 2002 max - Oct lastSun 2:00 0 S 23602742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 236143014Swollman# Quintana Roo 236258787SruZone America/Cancun -5:47:04 - LMT 1922 Jan 1 0:12:56 236375267Swollman -6:00 - CST 1981 Dec 23 236443543Swollman -5:00 Mexico E%sT 1998 Aug 2 2:00 236543543Swollman -6:00 Mexico C%sT 236664499Swollman# Campeche, Yucatan 236764499SwollmanZone America/Merida -5:58:28 - LMT 1922 Jan 1 0:01:32 236875267Swollman -6:00 - CST 1981 Dec 23 236964499Swollman -5:00 - EST 1982 Dec 2 237064499Swollman -6:00 Mexico C%sT 2371203019Sedwin# Coahuila, Durango, Nuevo Leon, Tamaulipas (near US border) 2372203019SedwinZone America/Matamoros -6:40:00 - LMT 1921 Dec 31 23:20:00 2373203019Sedwin -6:00 - CST 1988 2374203019Sedwin -6:00 US C%sT 1989 2375203019Sedwin -6:00 Mexico C%sT 2010 2376203019Sedwin -6:00 US C%sT 2377203019Sedwin# Coahuila, Durango, Nuevo Leon, Tamaulipas (away from US border) 237875267SwollmanZone America/Monterrey -6:41:16 - LMT 1921 Dec 31 23:18:44 237964499Swollman -6:00 - CST 1988 238064499Swollman -6:00 US C%sT 1989 238164499Swollman -6:00 Mexico C%sT 238243014Swollman# Central Mexico 2383203019SedwinZone America/Mexico_City -6:36:36 - LMT 1922 Jan 1 0:23:24 23842742Swollman -7:00 - MST 1927 Jun 10 23:00 23852742Swollman -6:00 - CST 1930 Nov 15 23862742Swollman -7:00 - MST 1931 May 1 23:00 23872742Swollman -6:00 - CST 1931 Oct 238875267Swollman -7:00 - MST 1932 Apr 1 238986222Swollman -6:00 Mexico C%sT 2001 Sep 30 02:00 239093799Swollman -6:00 - CST 2002 Feb 20 239193799Swollman -6:00 Mexico C%sT 2392203019Sedwin# Chihuahua (near US border) 2393203019SedwinZone America/Ojinaga -6:57:40 - LMT 1922 Jan 1 0:02:20 2394203019Sedwin -7:00 - MST 1927 Jun 10 23:00 2395203019Sedwin -6:00 - CST 1930 Nov 15 2396203019Sedwin -7:00 - MST 1931 May 1 23:00 2397203019Sedwin -6:00 - CST 1931 Oct 2398203019Sedwin -7:00 - MST 1932 Apr 1 2399203019Sedwin -6:00 - CST 1996 2400203019Sedwin -6:00 Mexico C%sT 1998 2401203019Sedwin -6:00 - CST 1998 Apr Sun>=1 3:00 2402203019Sedwin -7:00 Mexico M%sT 2010 2403203019Sedwin -7:00 US M%sT 2404203019Sedwin# Chihuahua (away from US border) 240558787SruZone America/Chihuahua -7:04:20 - LMT 1921 Dec 31 23:55:40 240643014Swollman -7:00 - MST 1927 Jun 10 23:00 240743014Swollman -6:00 - CST 1930 Nov 15 240843014Swollman -7:00 - MST 1931 May 1 23:00 240943014Swollman -6:00 - CST 1931 Oct 241075267Swollman -7:00 - MST 1932 Apr 1 241143014Swollman -6:00 - CST 1996 241243014Swollman -6:00 Mexico C%sT 1998 241343014Swollman -6:00 - CST 1998 Apr Sun>=1 3:00 241443014Swollman -7:00 Mexico M%sT 241558787Sru# Sonora 241658787SruZone America/Hermosillo -7:23:52 - LMT 1921 Dec 31 23:36:08 241758787Sru -7:00 - MST 1927 Jun 10 23:00 241858787Sru -6:00 - CST 1930 Nov 15 241958787Sru -7:00 - MST 1931 May 1 23:00 242058787Sru -6:00 - CST 1931 Oct 242175267Swollman -7:00 - MST 1932 Apr 1 242264499Swollman -6:00 - CST 1942 Apr 24 242358787Sru -7:00 - MST 1949 Jan 14 242458787Sru -8:00 - PST 1970 242558787Sru -7:00 Mexico M%sT 1999 242658787Sru -7:00 - MST 2427207898Sedwin 2428207898Sedwin# From Alexander Krivenyshev (2010-04-21): 2429207898Sedwin# According to news, Bahía de Banderas (Mexican state of Nayarit) 2430207898Sedwin# changed time zone UTC-7 to new time zone UTC-6 on April 4, 2010 (to 2431207898Sedwin# share the same time zone as nearby city Puerto Vallarta, Jalisco). 2432207898Sedwin# 2433207898Sedwin# (Spanish) 2434207898Sedwin# Bahía de Banderas homologa su horario al del centro del 2435207898Sedwin# país, a partir de este domingo 2436207898Sedwin# <a href="http://www.nayarit.gob.mx/notes.asp?id=20748"> 2437207898Sedwin# http://www.nayarit.gob.mx/notes.asp?id=20748 2438207898Sedwin# </a> 2439207898Sedwin# 2440207898Sedwin# Bahía de Banderas homologa su horario con el del Centro del 2441207898Sedwin# País 2442207898Sedwin# <a href="http://www.bahiadebanderas.gob.mx/principal/index.php?option=com_content&view=article&id=261:bahia-de-banderas-homologa-su-horario-con-el-del-centro-del-pais&catid=42:comunicacion-social&Itemid=50"> 2443207898Sedwin# http://www.bahiadebanderas.gob.mx/principal/index.php?option=com_content&view=article&id=261:bahia-de-banderas-homologa-su-horario-con-el-del-centro-del-pais&catid=42:comunicacion-social&Itemid=50" 2444207898Sedwin# </a> 2445207898Sedwin# 2446207898Sedwin# (English) 2447207898Sedwin# Puerto Vallarta and Bahía de Banderas: One Time Zone 2448207898Sedwin# <a href="http://virtualvallarta.com/puertovallarta/puertovallarta/localnews/2009-12-03-Puerto-Vallarta-and-Bahia-de-Banderas-One-Time-Zone.shtml"> 2449207898Sedwin# http://virtualvallarta.com/puertovallarta/puertovallarta/localnews/2009-12-03-Puerto-Vallarta-and-Bahia-de-Banderas-One-Time-Zone.shtml 2450207898Sedwin# </a> 2451207898Sedwin# 2452207898Sedwin# or 2453207898Sedwin# <a href="http://www.worldtimezone.com/dst_news/dst_news_mexico08.html"> 2454207898Sedwin# http://www.worldtimezone.com/dst_news/dst_news_mexico08.html 2455207898Sedwin# </a> 2456207898Sedwin# 2457207898Sedwin# "Mexico's Senate approved the amendments to the Mexican Schedule System that 2458207898Sedwin# will allow Bahía de Banderas and Puerto Vallarta to share the same time 2459207898Sedwin# zone ..." 246064499Swollman# Baja California Sur, Nayarit, Sinaloa 2461207898Sedwin 2462207898Sedwin# From Arthur David Olson (2010-05-01): 2463207898Sedwin# Use "Bahia_Banderas" to keep the name to fourteen characters. 2464207898Sedwin 24652742SwollmanZone America/Mazatlan -7:05:40 - LMT 1921 Dec 31 23:54:20 24662742Swollman -7:00 - MST 1927 Jun 10 23:00 24672742Swollman -6:00 - CST 1930 Nov 15 24682742Swollman -7:00 - MST 1931 May 1 23:00 24692742Swollman -6:00 - CST 1931 Oct 247075267Swollman -7:00 - MST 1932 Apr 1 247164499Swollman -6:00 - CST 1942 Apr 24 24722742Swollman -7:00 - MST 1949 Jan 14 24732742Swollman -8:00 - PST 1970 247414343Swollman -7:00 Mexico M%sT 2475207898Sedwin 2476207898SedwinZone America/Bahia_Banderas -7:01:00 - LMT 1921 Dec 31 23:59:00 2477207898Sedwin -7:00 - MST 1927 Jun 10 23:00 2478207898Sedwin -6:00 - CST 1930 Nov 15 2479207898Sedwin -7:00 - MST 1931 May 1 23:00 2480207898Sedwin -6:00 - CST 1931 Oct 2481207898Sedwin -7:00 - MST 1932 Apr 1 2482207898Sedwin -6:00 - CST 1942 Apr 24 2483207898Sedwin -7:00 - MST 1949 Jan 14 2484207898Sedwin -8:00 - PST 1970 2485210718Sedwin -7:00 Mexico M%sT 2010 Apr 4 2:00 2486207898Sedwin -6:00 Mexico C%sT 2487207898Sedwin 2488203019Sedwin# Baja California (near US border) 24892742SwollmanZone America/Tijuana -7:48:04 - LMT 1922 Jan 1 0:11:56 249075267Swollman -7:00 - MST 1924 24912742Swollman -8:00 - PST 1927 Jun 10 23:00 249275267Swollman -7:00 - MST 1930 Nov 15 249375267Swollman -8:00 - PST 1931 Apr 1 249475267Swollman -8:00 1:00 PDT 1931 Sep 30 249564499Swollman -8:00 - PST 1942 Apr 24 2496158421Swollman -8:00 1:00 PWT 1945 Aug 14 23:00u 2497158421Swollman -8:00 1:00 PPT 1945 Nov 12 # Peace 249875267Swollman -8:00 - PST 1948 Apr 5 249975267Swollman -8:00 1:00 PDT 1949 Jan 14 250075267Swollman -8:00 - PST 1954 250175267Swollman -8:00 CA P%sT 1961 250275267Swollman -8:00 - PST 1976 250314343Swollman -8:00 US P%sT 1996 250475267Swollman -8:00 Mexico P%sT 2001 250593799Swollman -8:00 US P%sT 2002 Feb 20 2506203019Sedwin -8:00 Mexico P%sT 2010 2507203019Sedwin -8:00 US P%sT 2508203019Sedwin# Baja California (away from US border) 2509203019SedwinZone America/Santa_Isabel -7:39:28 - LMT 1922 Jan 1 0:20:32 2510203019Sedwin -7:00 - MST 1924 2511203019Sedwin -8:00 - PST 1927 Jun 10 23:00 2512203019Sedwin -7:00 - MST 1930 Nov 15 2513203019Sedwin -8:00 - PST 1931 Apr 1 2514203019Sedwin -8:00 1:00 PDT 1931 Sep 30 2515203019Sedwin -8:00 - PST 1942 Apr 24 2516203019Sedwin -8:00 1:00 PWT 1945 Aug 14 23:00u 2517203019Sedwin -8:00 1:00 PPT 1945 Nov 12 # Peace 2518203019Sedwin -8:00 - PST 1948 Apr 5 2519203019Sedwin -8:00 1:00 PDT 1949 Jan 14 2520203019Sedwin -8:00 - PST 1954 2521203019Sedwin -8:00 CA P%sT 1961 2522203019Sedwin -8:00 - PST 1976 2523203019Sedwin -8:00 US P%sT 1996 2524203019Sedwin -8:00 Mexico P%sT 2001 2525203019Sedwin -8:00 US P%sT 2002 Feb 20 252693799Swollman -8:00 Mexico P%sT 2527158421Swollman# From Paul Eggert (2006-03-22): 252875267Swollman# Formerly there was an America/Ensenada zone, which differed from 252975267Swollman# America/Tijuana only in that it did not observe DST from 1976 2530158421Swollman# through 1995. This was as per Shanks (1999). But Shanks & Pottenger say 2531158421Swollman# Ensenada did not observe DST from 1948 through 1975. Guy Harris reports 253275267Swollman# that the 1987 OAG says "Only Ensenada, Mexicale, San Felipe and 2533158421Swollman# Tijuana observe DST," which agrees with Shanks & Pottenger but implies that 253475267Swollman# DST-observance was a town-by-town matter back then. This concerns 253575267Swollman# data after 1970 so most likely there should be at least one Zone 253675267Swollman# other than America/Tijuana for Baja, but it's not clear yet what its 253775267Swollman# name or contents should be. 25382742Swollman# 25392742Swollman# Revillagigedo Is 25402742Swollman# no information 25412742Swollman 25422742Swollman############################################################################### 25432742Swollman 25442742Swollman# Anguilla 25452742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 25462742SwollmanZone America/Anguilla -4:12:16 - LMT 1912 Mar 2 25472742Swollman -4:00 - AST 25482742Swollman 25492742Swollman# Antigua and Barbuda 25502742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 25512742SwollmanZone America/Antigua -4:07:12 - LMT 1912 Mar 2 25522742Swollman -5:00 - EST 1951 25532742Swollman -4:00 - AST 25542742Swollman 25552742Swollman# Bahamas 2556169811Swollman# 2557169811Swollman# From Sue Williams (2006-12-07): 2558169811Swollman# The Bahamas announced about a month ago that they plan to change their DST 2559169811Swollman# rules to sync with the U.S. starting in 2007.... 2560169811Swollman# http://www.jonesbahamas.com/?c=45&a=10412 2561169811Swollman 25622742Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 2563181421SedwinRule Bahamas 1964 1975 - Oct lastSun 2:00 0 S 2564181421SedwinRule Bahamas 1964 1975 - Apr lastSun 2:00 1:00 D 25652742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 25662742SwollmanZone America/Nassau -5:09:24 - LMT 1912 Mar 2 2567169811Swollman -5:00 Bahamas E%sT 1976 2568169811Swollman -5:00 US E%sT 25692742Swollman 25702742Swollman# Barbados 25712742Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 25722742SwollmanRule Barb 1977 only - Jun 12 2:00 1:00 D 25732742SwollmanRule Barb 1977 1978 - Oct Sun>=1 2:00 0 S 25742742SwollmanRule Barb 1978 1980 - Apr Sun>=15 2:00 1:00 D 25752742SwollmanRule Barb 1979 only - Sep 30 2:00 0 S 25762742SwollmanRule Barb 1980 only - Sep 25 2:00 0 S 25772742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 25782742SwollmanZone America/Barbados -3:58:28 - LMT 1924 # Bridgetown 257943014Swollman -3:58:28 - BMT 1932 # Bridgetown Mean Time 25802742Swollman -4:00 Barb A%sT 25812742Swollman 25822742Swollman# Belize 2583158421Swollman# Whitman entirely disagrees with Shanks; go with Shanks & Pottenger. 25842742Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 25852742SwollmanRule Belize 1918 1942 - Oct Sun>=2 0:00 0:30 HD 25862742SwollmanRule Belize 1919 1943 - Feb Sun>=9 0:00 0 S 25872742SwollmanRule Belize 1973 only - Dec 5 0:00 1:00 D 25882742SwollmanRule Belize 1974 only - Feb 9 0:00 0 S 25892742SwollmanRule Belize 1982 only - Dec 18 0:00 1:00 D 25902742SwollmanRule Belize 1983 only - Feb 12 0:00 0 S 25912742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 25922742SwollmanZone America/Belize -5:52:48 - LMT 1912 Apr 25932742Swollman -6:00 Belize C%sT 25942742Swollman 25952742Swollman# Bermuda 2596163302Sru 2597163302Sru# From Dan Jones, reporting in The Royal Gazette (2006-06-26): 2598163302Sru 2599163302Sru# Next year, however, clocks in the US will go forward on the second Sunday 2600163302Sru# in March, until the first Sunday in November. And, after the Time Zone 2601163302Sru# (Seasonal Variation) Bill 2006 was passed in the House of Assembly on 2602163302Sru# Friday, the same thing will happen in Bermuda. 2603163302Sru# http://www.theroyalgazette.com/apps/pbcs.dll/article?AID=/20060529/NEWS/105290135 2604163302Sru 26052742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 26062742SwollmanZone Atlantic/Bermuda -4:19:04 - LMT 1930 Jan 1 2:00 # Hamilton 26072742Swollman -4:00 - AST 1974 Apr 28 2:00 2608163302Sru -4:00 Bahamas A%sT 1976 2609163302Sru -4:00 US A%sT 26102742Swollman 26112742Swollman# Cayman Is 26122742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 26132742SwollmanZone America/Cayman -5:25:32 - LMT 1890 # Georgetown 261443014Swollman -5:07:12 - KMT 1912 Feb # Kingston Mean Time 26152742Swollman -5:00 - EST 26162742Swollman 26172742Swollman# Costa Rica 26182742Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 26192742SwollmanRule CR 1979 1980 - Feb lastSun 0:00 1:00 D 26202742SwollmanRule CR 1979 1980 - Jun Sun>=1 0:00 0 S 262120094SwollmanRule CR 1991 1992 - Jan Sat>=15 0:00 1:00 D 2622158421Swollman# IATA SSIM (1991-09) says the following was at 1:00; 2623158421Swollman# go with Shanks & Pottenger. 262420094SwollmanRule CR 1991 only - Jul 1 0:00 0 S 262520094SwollmanRule CR 1992 only - Mar 15 0:00 0 S 26262742Swollman# There are too many San Joses elsewhere, so we'll use `Costa Rica'. 26272742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 26282742SwollmanZone America/Costa_Rica -5:36:20 - LMT 1890 # San Jose 262958787Sru -5:36:20 - SJMT 1921 Jan 15 # San Jose Mean Time 26302742Swollman -6:00 CR C%sT 26312742Swollman# Coco 26322742Swollman# no information; probably like America/Costa_Rica 26332742Swollman 26342742Swollman# Cuba 26352742Swollman 263658787Sru# From Arthur David Olson (1999-03-29): 263758787Sru# The 1999-03-28 exhibition baseball game held in Havana, Cuba, between 263858787Sru# the Cuban National Team and the Baltimore Orioles was carried live on 263958787Sru# the Orioles Radio Network, including affiliate WTOP in Washington, DC. 264058787Sru# During the game, play-by-play announcer Jim Hunter noted that 264158787Sru# "We'll be losing two hours of sleep...Cuba switched to Daylight Saving 264258787Sru# Time today." (The "two hour" remark referred to losing one hour of 264358787Sru# sleep on 1999-03-28--when the announcers were in Cuba as it switched 264458787Sru# to DST--and one more hour on 1999-04-04--when the announcers will have 264558787Sru# returned to Baltimore, which switches on that date.) 26462742Swollman 2647138323Swollman# From Evert van der Veer via Steffen Thorsen (2004-10-28): 2648138323Swollman# Cuba is not going back to standard time this year. 2649158421Swollman# From Paul Eggert (2006-03-22): 2650138323Swollman# http://www.granma.cu/ingles/2004/septiembre/juev30/41medid-i.html 2651138323Swollman# says that it's due to a problem at the Antonio Guiteras 2652138323Swollman# thermoelectric plant, and says "This October there will be no return 2653138323Swollman# to normal hours (after daylight saving time)". 2654158421Swollman# For now, let's assume that it's a temporary measure. 2655138323Swollman 2656153670Swollman# From Carlos A. Carnero Delgado (2005-11-12): 2657153670Swollman# This year (just like in 2004-2005) there's no change in time zone 2658153670Swollman# adjustment in Cuba. We will stay in daylight saving time: 2659153670Swollman# http://www.granma.cu/espanol/2005/noviembre/mier9/horario.html 2660153670Swollman 2661169811Swollman# From Jesper Norgaard Welen (2006-10-21): 2662169811Swollman# An article in GRANMA INTERNACIONAL claims that Cuba will end 2663169811Swollman# the 3 years of permanent DST next weekend, see 2664169811Swollman# http://www.granma.cu/ingles/2006/octubre/lun16/43horario.html 2665169811Swollman# "On Saturday night, October 28 going into Sunday, October 29, at 01:00, 2666169811Swollman# watches should be set back one hour -- going back to 00:00 hours -- returning 2667169811Swollman# to the normal schedule.... 2668163302Sru 2669169811Swollman# From Paul Eggert (2007-03-02): 2670169811Swollman# http://www.granma.cubaweb.cu/english/news/art89.html, dated yesterday, 2671169811Swollman# says Cuban clocks will advance at midnight on March 10. 2672169811Swollman# For lack of better information, assume Cuba will use US rules, 2673169811Swollman# except that it switches at midnight standard time as usual. 2674173319Sedwin# 2675173319Sedwin# From Steffen Thorsen (2007-10-25): 2676240461Sedwin# Carlos Alberto Fonseca Arauz informed me that Cuba will end DST one week 2677173319Sedwin# earlier - on the last Sunday of October, just like in 2006. 2678240461Sedwin# 2679173319Sedwin# He supplied these references: 2680240461Sedwin# 2681173319Sedwin# http://www.prensalatina.com.mx/article.asp?ID=%7B4CC32C1B-A9F7-42FB-8A07-8631AFC923AF%7D&language=ES 2682173319Sedwin# http://actualidad.terra.es/sociedad/articulo/cuba_llama_ahorrar_energia_cambio_1957044.htm 2683240461Sedwin# 2684173319Sedwin# From Alex Kryvenishev (2007-10-25): 2685173319Sedwin# Here is also article from Granma (Cuba): 2686240461Sedwin# 2687173319Sedwin# [Regira] el Horario Normal desde el [proximo] domingo 28 de octubre 2688173319Sedwin# http://www.granma.cubaweb.cu/2007/10/24/nacional/artic07.html 2689240461Sedwin# 2690173319Sedwin# http://www.worldtimezone.com/dst_news/dst_news_cuba03.html 2691169811Swollman 2692177591Sedwin# From Arthur David Olson (2008-03-09): 2693177591Sedwin# I'm in Maryland which is now observing United States Eastern Daylight 2694177591Sedwin# Time. At 9:44 local time I used RealPlayer to listen to 2695177591Sedwin# <a href="http://media.enet.cu/radioreloj"> 2696177591Sedwin# http://media.enet.cu/radioreloj 2697177591Sedwin# </a>, a Cuban information station, and heard 2698177591Sedwin# the time announced as "ocho cuarenta y cuatro" ("eight forty-four"), 2699177591Sedwin# indicating that Cuba is still on standard time. 2700177591Sedwin 2701177591Sedwin# From Steffen Thorsen (2008-03-12): 2702177591Sedwin# It seems that Cuba will start DST on Sunday, 2007-03-16... 2703177591Sedwin# It was announced yesterday, according to this source (in Spanish): 2704177591Sedwin# <a href="http://www.nnc.cubaweb.cu/marzo-2008/cien-1-11-3-08.htm"> 2705177591Sedwin# http://www.nnc.cubaweb.cu/marzo-2008/cien-1-11-3-08.htm 2706177591Sedwin# </a> 2707177591Sedwin# 2708177591Sedwin# Some more background information is posted here: 2709177591Sedwin# <a href="http://www.timeanddate.com/news/time/cuba-starts-dst-march-16.html"> 2710177591Sedwin# http://www.timeanddate.com/news/time/cuba-starts-dst-march-16.html 2711177591Sedwin# </a> 2712177591Sedwin# 2713177591Sedwin# The article also says that Cuba has been observing DST since 1963, 2714177591Sedwin# while Shanks (and tzdata) has 1965 as the first date (except in the 2715177591Sedwin# 1940's). Many other web pages in Cuba also claim that it has been 2716177591Sedwin# observed since 1963, but with the exception of 1970 - an exception 2717177591Sedwin# which is not present in tzdata/Shanks. So there is a chance we need to 2718177591Sedwin# change some historic records as well. 2719177591Sedwin# 2720177591Sedwin# One example: 2721177591Sedwin# <a href="http://www.radiohc.cu/espanol/noticias/mar07/11mar/hor.htm"> 2722177591Sedwin# http://www.radiohc.cu/espanol/noticias/mar07/11mar/hor.htm 2723177591Sedwin# </a> 2724177591Sedwin 2725177591Sedwin# From Jesper Norgaard Welen (2008-03-13): 2726177591Sedwin# The Cuban time change has just been confirmed on the most authoritative 2727177591Sedwin# web site, the Granma. Please check out 2728177591Sedwin# <a href="http://www.granma.cubaweb.cu/2008/03/13/nacional/artic10.html"> 2729177591Sedwin# http://www.granma.cubaweb.cu/2008/03/13/nacional/artic10.html 2730177591Sedwin# </a> 2731177591Sedwin# 2732177591Sedwin# Basically as expected after Steffen Thorsens information, the change 2733177591Sedwin# will take place midnight between Saturday and Sunday. 2734177591Sedwin 2735177591Sedwin# From Arthur David Olson (2008-03-12): 2736177591Sedwin# Assume Sun>=15 (third Sunday) going forward. 2737177591Sedwin 2738189923Sedwin# From Alexander Krivenyshev (2009-03-04) 2739189923Sedwin# According to the Radio Reloj - Cuba will start Daylight Saving Time on 2740189923Sedwin# midnight between Saturday, March 07, 2009 and Sunday, March 08, 2009- 2741189923Sedwin# not on midnight March 14 / March 15 as previously thought. 2742189923Sedwin# 2743189923Sedwin# <a href="http://www.worldtimezone.com/dst_news/dst_news_cuba05.html"> 2744189923Sedwin# http://www.worldtimezone.com/dst_news/dst_news_cuba05.html 2745189923Sedwin# (in Spanish) 2746189923Sedwin# </a> 2747189923Sedwin 2748189923Sedwin# From Arthur David Olson (2009-03-09) 2749189923Sedwin# I listened over the Internet to 2750189923Sedwin# <a href="http://media.enet.cu/readioreloj"> 2751189923Sedwin# http://media.enet.cu/readioreloj 2752189923Sedwin# </a> 2753189923Sedwin# this morning; when it was 10:05 a. m. here in Bethesda, Maryland the 2754189923Sedwin# the time was announced as "diez cinco"--the same time as here, indicating 2755189923Sedwin# that has indeed switched to DST. Assume second Sunday from 2009 forward. 2756189923Sedwin 2757219687Sedwin# From Steffen Thorsen (2011-03-08): 2758219687Sedwin# Granma announced that Cuba is going to start DST on 2011-03-20 00:00:00 2759219687Sedwin# this year. Nothing about the end date known so far (if that has 2760219687Sedwin# changed at all). 2761219687Sedwin# 2762219687Sedwin# Source: 2763219687Sedwin# <a href="http://granma.co.cu/2011/03/08/nacional/artic01.html"> 2764219687Sedwin# http://granma.co.cu/2011/03/08/nacional/artic01.html 2765219687Sedwin# </a> 2766219687Sedwin# 2767219687Sedwin# Our info: 2768219687Sedwin# <a href="http://www.timeanddate.com/news/time/cuba-starts-dst-2011.html"> 2769219687Sedwin# http://www.timeanddate.com/news/time/cuba-starts-dst-2011.html 2770219687Sedwin# </a> 2771233446Sedwin# 2772233446Sedwin# From Steffen Thorsen (2011-10-30) 2773240461Sedwin# Cuba will end DST two weeks later this year. Instead of going back 2774233446Sedwin# tonight, it has been delayed to 2011-11-13 at 01:00. 2775233446Sedwin# 2776233446Sedwin# One source (Spanish) 2777233446Sedwin# <a href="http://www.radioangulo.cu/noticias/cuba/17105-cuba-restablecera-el-horario-del-meridiano-de-greenwich.html"> 2778233446Sedwin# http://www.radioangulo.cu/noticias/cuba/17105-cuba-restablecera-el-horario-del-meridiano-de-greenwich.html 2779233446Sedwin# </a> 2780233446Sedwin# 2781233446Sedwin# Our page: 2782233446Sedwin# <a href="http://www.timeanddate.com/news/time/cuba-time-changes-2011.html"> 2783233446Sedwin# http://www.timeanddate.com/news/time/cuba-time-changes-2011.html 2784233446Sedwin# </a> 2785240461Sedwin# 2786240461Sedwin# From Steffen Thorsen (2012-03-01) 2787240461Sedwin# According to Radio Reloj, Cuba will start DST on Midnight between March 2788240461Sedwin# 31 and April 1. 2789240461Sedwin# 2790240461Sedwin# Radio Reloj has the following info (Spanish): 2791240461Sedwin# <a href="http://www.radioreloj.cu/index.php/noticias-radio-reloj/71-miscelaneas/7529-cuba-aplicara-el-horario-de-verano-desde-el-1-de-abril"> 2792240461Sedwin# http://www.radioreloj.cu/index.php/noticias-radio-reloj/71-miscelaneas/7529-cuba-aplicara-el-horario-de-verano-desde-el-1-de-abril 2793240461Sedwin# </a> 2794240461Sedwin# 2795240461Sedwin# Our info on it: 2796240461Sedwin# <a href="http://www.timeanddate.com/news/time/cuba-starts-dst-2012.html"> 2797240461Sedwin# http://www.timeanddate.com/news/time/cuba-starts-dst-2012.html 2798240461Sedwin# </a> 2799219687Sedwin 28002742Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 28012742SwollmanRule Cuba 1928 only - Jun 10 0:00 1:00 D 28022742SwollmanRule Cuba 1928 only - Oct 10 0:00 0 S 28032742SwollmanRule Cuba 1940 1942 - Jun Sun>=1 0:00 1:00 D 28042742SwollmanRule Cuba 1940 1942 - Sep Sun>=1 0:00 0 S 28052742SwollmanRule Cuba 1945 1946 - Jun Sun>=1 0:00 1:00 D 28062742SwollmanRule Cuba 1945 1946 - Sep Sun>=1 0:00 0 S 28072742SwollmanRule Cuba 1965 only - Jun 1 0:00 1:00 D 28082742SwollmanRule Cuba 1965 only - Sep 30 0:00 0 S 28092742SwollmanRule Cuba 1966 only - May 29 0:00 1:00 D 28102742SwollmanRule Cuba 1966 only - Oct 2 0:00 0 S 28112742SwollmanRule Cuba 1967 only - Apr 8 0:00 1:00 D 28122742SwollmanRule Cuba 1967 1968 - Sep Sun>=8 0:00 0 S 28132742SwollmanRule Cuba 1968 only - Apr 14 0:00 1:00 D 28142742SwollmanRule Cuba 1969 1977 - Apr lastSun 0:00 1:00 D 28152742SwollmanRule Cuba 1969 1971 - Oct lastSun 0:00 0 S 28162742SwollmanRule Cuba 1972 1974 - Oct 8 0:00 0 S 28172742SwollmanRule Cuba 1975 1977 - Oct lastSun 0:00 0 S 28182742SwollmanRule Cuba 1978 only - May 7 0:00 1:00 D 281930711SwollmanRule Cuba 1978 1990 - Oct Sun>=8 0:00 0 S 28202742SwollmanRule Cuba 1979 1980 - Mar Sun>=15 0:00 1:00 D 28212742SwollmanRule Cuba 1981 1985 - May Sun>=5 0:00 1:00 D 28222742SwollmanRule Cuba 1986 1989 - Mar Sun>=14 0:00 1:00 D 282343014SwollmanRule Cuba 1990 1997 - Apr Sun>=1 0:00 1:00 D 282420094SwollmanRule Cuba 1991 1995 - Oct Sun>=8 0:00s 0 S 282543014SwollmanRule Cuba 1996 only - Oct 6 0:00s 0 S 282643014SwollmanRule Cuba 1997 only - Oct 12 0:00s 0 S 282758787SruRule Cuba 1998 1999 - Mar lastSun 0:00s 1:00 D 2828138323SwollmanRule Cuba 1998 2003 - Oct lastSun 0:00s 0 S 2829187588SedwinRule Cuba 2000 2004 - Apr Sun>=1 0:00s 1:00 D 2830233446SedwinRule Cuba 2006 2010 - Oct lastSun 0:00s 0 S 2831177591SedwinRule Cuba 2007 only - Mar Sun>=8 0:00s 1:00 D 2832189923SedwinRule Cuba 2008 only - Mar Sun>=15 0:00s 1:00 D 2833219687SedwinRule Cuba 2009 2010 - Mar Sun>=8 0:00s 1:00 D 2834219687SedwinRule Cuba 2011 only - Mar Sun>=15 0:00s 1:00 D 2835233446SedwinRule Cuba 2011 only - Nov 13 0:00s 0 S 2836240461SedwinRule Cuba 2012 only - Apr 1 0:00s 1:00 D 2837233446SedwinRule Cuba 2012 max - Oct lastSun 0:00s 0 S 2838240461SedwinRule Cuba 2013 max - Mar Sun>=8 0:00s 1:00 D 28392742Swollman 28402742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 28412742SwollmanZone America/Havana -5:29:28 - LMT 1890 284258787Sru -5:29:36 - HMT 1925 Jul 19 12:00 # Havana MT 28432742Swollman -5:00 Cuba C%sT 28442742Swollman 28452742Swollman# Dominica 28462742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 28472742SwollmanZone America/Dominica -4:05:36 - LMT 1911 Jul 1 0:01 # Roseau 28482742Swollman -4:00 - AST 28492742Swollman 28502742Swollman# Dominican Republic 285175267Swollman 285275267Swollman# From Steffen Thorsen (2000-10-30): 285375267Swollman# Enrique Morales reported to me that the Dominican Republic has changed the 285475267Swollman# time zone to Eastern Standard Time as of Sunday 29 at 2 am.... 285575267Swollman# http://www.listin.com.do/antes/261000/republica/princi.html 285675267Swollman 285775267Swollman# From Paul Eggert (2000-12-04): 285875267Swollman# That URL (2000-10-26, in Spanish) says they planned to use US-style DST. 285975267Swollman 286075267Swollman# From Rives McDow (2000-12-01): 286175267Swollman# Dominican Republic changed its mind and presidential decree on Tuesday, 286275267Swollman# November 28, 2000, with a new decree. On Sunday, December 3 at 1:00 AM the 286375267Swollman# Dominican Republic will be reverting to 8 hours from the International Date 286475267Swollman# Line, and will not be using DST in the foreseeable future. The reason they 286575267Swollman# decided to use DST was to be in synch with Puerto Rico, who was also going 286675267Swollman# to implement DST. When Puerto Rico didn't implement DST, the president 286775267Swollman# decided to revert. 286875267Swollman 286975267Swollman 28702742Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 28712742SwollmanRule DR 1966 only - Oct 30 0:00 1:00 D 28722742SwollmanRule DR 1967 only - Feb 28 0:00 0 S 28732742SwollmanRule DR 1969 1973 - Oct lastSun 0:00 0:30 HD 28742742SwollmanRule DR 1970 only - Feb 21 0:00 0 S 28752742SwollmanRule DR 1971 only - Jan 20 0:00 0 S 28762742SwollmanRule DR 1972 1974 - Jan 21 0:00 0 S 28772742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 28782742SwollmanZone America/Santo_Domingo -4:39:36 - LMT 1890 28792742Swollman -4:40 - SDMT 1933 Apr 1 12:00 # S. Dom. MT 28802742Swollman -5:00 DR E%sT 1974 Oct 27 288175267Swollman -4:00 - AST 2000 Oct 29 02:00 288275267Swollman -5:00 US E%sT 2000 Dec 3 01:00 28832742Swollman -4:00 - AST 28842742Swollman 28852742Swollman# El Salvador 2886158421Swollman 28872742Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 28882742SwollmanRule Salv 1987 1988 - May Sun>=1 0:00 1:00 D 28892742SwollmanRule Salv 1987 1988 - Sep lastSun 0:00 0 S 2890121098Swollman# There are too many San Salvadors elsewhere, so use America/El_Salvador 2891121098Swollman# instead of America/San_Salvador. 28922742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 28932742SwollmanZone America/El_Salvador -5:56:48 - LMT 1921 # San Salvador 28942742Swollman -6:00 Salv C%sT 28952742Swollman 28962742Swollman# Grenada 28972742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 289819878SwollmanZone America/Grenada -4:07:00 - LMT 1911 Jul # St George's 28992742Swollman -4:00 - AST 29002742Swollman 29012742Swollman# Guadeloupe 29022742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 29032742SwollmanZone America/Guadeloupe -4:06:08 - LMT 1911 Jun 8 # Pointe a Pitre 29042742Swollman -4:00 - AST 2905174242Sedwin# St Barthelemy 2906174242SedwinLink America/Guadeloupe America/St_Barthelemy 2907174242Sedwin# St Martin (French part) 2908174242SedwinLink America/Guadeloupe America/Marigot 29092742Swollman 29102742Swollman# Guatemala 2911158421Swollman# 2912158421Swollman# From Gwillim Law (2006-04-22), after a heads-up from Oscar van Vlijmen: 2913158421Swollman# Diario Co Latino, at 2914158421Swollman# http://www.diariocolatino.com/internacionales/detalles.asp?NewsID=8079, 2915158421Swollman# says in an article dated 2006-04-19 that the Guatemalan government had 2916158421Swollman# decided on that date to advance official time by 60 minutes, to lessen the 2917158421Swollman# impact of the elevated cost of oil.... Daylight saving time will last from 2918158421Swollman# 2006-04-29 24:00 (Guatemalan standard time) to 2006-09-30 (time unspecified). 2919163302Sru# From Paul Eggert (2006-06-22): 2920163302Sru# The Ministry of Energy and Mines, press release CP-15/2006 2921163302Sru# (2006-04-19), says DST ends at 24:00. See 2922163302Sru# <http://www.sieca.org.gt/Sitio_publico/Energeticos/Doc/Medidas/Cambio_Horario_Nac_190406.pdf>. 2923163302Sru 29242742Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 29252742SwollmanRule Guat 1973 only - Nov 25 0:00 1:00 D 29262742SwollmanRule Guat 1974 only - Feb 24 0:00 0 S 29272742SwollmanRule Guat 1983 only - May 21 0:00 1:00 D 29282742SwollmanRule Guat 1983 only - Sep 22 0:00 0 S 292920094SwollmanRule Guat 1991 only - Mar 23 0:00 1:00 D 293020094SwollmanRule Guat 1991 only - Sep 7 0:00 0 S 2931158421SwollmanRule Guat 2006 only - Apr 30 0:00 1:00 D 2932158421SwollmanRule Guat 2006 only - Oct 1 0:00 0 S 29332742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 29342742SwollmanZone America/Guatemala -6:02:04 - LMT 1918 Oct 5 29352742Swollman -6:00 Guat C%sT 29362742Swollman 29372742Swollman# Haiti 2938149514Swollman# From Gwillim Law (2005-04-15): 2939149514Swollman# Risto O. Nykanen wrote me that Haiti is now on DST. 2940149514Swollman# I searched for confirmation, and I found a 2941149514Swollman# <a href="http://www.haitianconsulate.org/time.doc"> press release 2942149514Swollman# on the Web page of the Haitian Consulate in Chicago (2005-03-31), 2943149514Swollman# </a>. Translated from French, it says: 2944149514Swollman# 2945149514Swollman# "The Prime Minister's Communication Office notifies the public in general 2946149514Swollman# and the press in particular that, following a decision of the Interior 2947149514Swollman# Ministry and the Territorial Collectivities [I suppose that means the 2948149514Swollman# provinces], Haiti will move to Eastern Daylight Time in the night from next 2949149514Swollman# Saturday the 2nd to Sunday the 3rd. 2950149514Swollman# 2951149514Swollman# "Consequently, the Prime Minister's Communication Office wishes to inform 2952149514Swollman# the population that the country's clocks will be set forward one hour 2953149514Swollman# starting at midnight. This provision will hold until the last Saturday in 2954149514Swollman# October 2005. 2955149514Swollman# 2956149514Swollman# "Port-au-Prince, March 31, 2005" 2957158421Swollman# 2958158421Swollman# From Steffen Thorsen (2006-04-04): 2959158421Swollman# I have been informed by users that Haiti observes DST this year like 2960158421Swollman# last year, so the current "only" rule for 2005 might be changed to a 2961158421Swollman# "max" rule or to last until 2006. (Who knows if they will observe DST 2962158421Swollman# next year or if they will extend their DST like US/Canada next year). 2963158421Swollman# 2964158421Swollman# I have found this article about it (in French): 2965158421Swollman# http://www.haitipressnetwork.com/news.cfm?articleID=7612 2966158421Swollman# 2967158421Swollman# The reason seems to be an energy crisis. 2968149514Swollman 2969169811Swollman# From Stephen Colebourne (2007-02-22): 2970169811Swollman# Some IATA info: Haiti won't be having DST in 2007. 2971158421Swollman 2972240461Sedwin# From Steffen Thorsen (2012-03-11): 2973240461Sedwin# According to several news sources, Haiti will observe DST this year, 2974240461Sedwin# apparently using the same start and end date as USA/Canada. 2975240461Sedwin# So this means they have already changed their time. 2976240461Sedwin# 2977240461Sedwin# (Sources in French): 2978240461Sedwin# <a href="http://www.alterpresse.org/spip.php?article12510"> 2979240461Sedwin# http://www.alterpresse.org/spip.php?article12510 2980240461Sedwin# </a> 2981240461Sedwin# <a href="http://radiovision2000haiti.net/home/?p=13253"> 2982240461Sedwin# http://radiovision2000haiti.net/home/?p=13253 2983240461Sedwin# </a> 2984240461Sedwin# 2985240461Sedwin# Our coverage: 2986240461Sedwin# <a href="http://www.timeanddate.com/news/time/haiti-dst-2012.html"> 2987240461Sedwin# http://www.timeanddate.com/news/time/haiti-dst-2012.html 2988240461Sedwin# </a> 2989169811Swollman 2990240461Sedwin# From Arthur David Olson (2012-03-11): 2991240461Sedwin# The alterpresse.org source seems to show a US-style leap from 2:00 a.m. to 2992240461Sedwin# 3:00 a.m. rather than the traditional Haitian jump at midnight. 2993240461Sedwin# Assume a US-style fall back as well XXX. 2994240461Sedwin# Do not yet assume that the change carries forward past 2012 XXX. 2995240461Sedwin 29962742Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 29972742SwollmanRule Haiti 1983 only - May 8 0:00 1:00 D 29982742SwollmanRule Haiti 1984 1987 - Apr lastSun 0:00 1:00 D 29992742SwollmanRule Haiti 1983 1987 - Oct lastSun 0:00 0 S 3000158421Swollman# Shanks & Pottenger say AT is 2:00, but IATA SSIM (1991/1997) says 1:00s. 3001158421Swollman# Go with IATA. 300243014SwollmanRule Haiti 1988 1997 - Apr Sun>=1 1:00s 1:00 D 300343014SwollmanRule Haiti 1988 1997 - Oct lastSun 1:00s 0 S 3004169811SwollmanRule Haiti 2005 2006 - Apr Sun>=1 0:00 1:00 D 3005169811SwollmanRule Haiti 2005 2006 - Oct lastSun 0:00 0 S 3006240461SedwinRule Haiti 2012 only - Mar Sun>=8 2:00 1:00 D 3007240461SedwinRule Haiti 2012 only - Nov Sun>=1 2:00 0 S 30082742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 30092742SwollmanZone America/Port-au-Prince -4:49:20 - LMT 1890 30102742Swollman -4:49 - PPMT 1917 Jan 24 12:00 # P-a-P MT 30112742Swollman -5:00 Haiti E%sT 30122742Swollman 30132742Swollman# Honduras 3014158421Swollman# Shanks & Pottenger say 1921 Jan 1; go with Whitman's more precise Apr 1. 3015158421Swollman 3016158421Swollman# From Paul Eggert (2006-05-05): 3017158421Swollman# worldtimezone.com reports a 2006-05-02 Spanish-language AP article 3018158421Swollman# saying Honduras will start using DST midnight Saturday, effective 4 3019158421Swollman# months until September. La Tribuna reported today 3020158421Swollman# <http://www.latribuna.hn/99299.html> that Manuel Zelaya, the president 3021163302Sru# of Honduras, refused to back down on this. 3022158421Swollman 3023163302Sru# From Jesper Norgaard Welen (2006-08-08): 3024163302Sru# It seems that Honduras has returned from DST to standard time this Monday at 3025163302Sru# 00:00 hours (prolonging Sunday to 25 hours duration). 3026163302Sru# http://www.worldtimezone.com/dst_news/dst_news_honduras04.html 3027163302Sru 3028163302Sru# From Paul Eggert (2006-08-08): 3029163302Sru# Also see Diario El Heraldo, The country returns to standard time (2006-08-08) 3030163302Sru# <http://www.elheraldo.hn/nota.php?nid=54941&sec=12>. 3031163302Sru# It mentions executive decree 18-2006. 3032163302Sru 3033163302Sru# From Steffen Thorsen (2006-08-17): 3034163302Sru# Honduras will observe DST from 2007 to 2009, exact dates are not 3035163302Sru# published, I have located this authoritative source: 3036163302Sru# http://www.presidencia.gob.hn/noticia.aspx?nId=47 3037163302Sru 3038169811Swollman# From Steffen Thorsen (2007-03-30): 3039169811Swollman# http://www.laprensahn.com/pais_nota.php?id04962=7386 3040169811Swollman# So it seems that Honduras will not enter DST this year.... 3041169811Swollman 3042158421Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 3043158421SwollmanRule Hond 1987 1988 - May Sun>=1 0:00 1:00 D 3044158421SwollmanRule Hond 1987 1988 - Sep lastSun 0:00 0 S 3045169811SwollmanRule Hond 2006 only - May Sun>=1 0:00 1:00 D 3046169811SwollmanRule Hond 2006 only - Aug Mon>=1 0:00 0 S 30472742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 30482742SwollmanZone America/Tegucigalpa -5:48:52 - LMT 1921 Apr 3049158421Swollman -6:00 Hond C%sT 305043543Swollman# 305143543Swollman# Great Swan I ceded by US to Honduras in 1972 30522742Swollman 30532742Swollman# Jamaica 30542742Swollman 305519878Swollman# From Bob Devine (1988-01-28): 30562742Swollman# Follows US rules. 30572742Swollman 305819878Swollman# From U. S. Naval Observatory (1989-01-19): 30592742Swollman# JAMAICA 5 H BEHIND UTC 30602742Swollman 3061158421Swollman# From Shanks & Pottenger: 30622742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 30632742SwollmanZone America/Jamaica -5:07:12 - LMT 1890 # Kingston 306443014Swollman -5:07:12 - KMT 1912 Feb # Kingston Mean Time 306558787Sru -5:00 - EST 1974 Apr 28 2:00 306620094Swollman -5:00 US E%sT 1984 306720094Swollman -5:00 - EST 30682742Swollman 30692742Swollman# Martinique 30702742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 30712742SwollmanZone America/Martinique -4:04:20 - LMT 1890 # Fort-de-France 307286222Swollman -4:04:20 - FFMT 1911 May # Fort-de-France MT 30732742Swollman -4:00 - AST 1980 Apr 6 30742742Swollman -4:00 1:00 ADT 1980 Sep 28 30752742Swollman -4:00 - AST 30762742Swollman 30772742Swollman# Montserrat 3078158421Swollman# From Paul Eggert (2006-03-22): 3079158421Swollman# In 1995 volcanic eruptions forced evacuation of Plymouth, the capital. 3080158421Swollman# world.gazetteer.com says Cork Hill is the most populous location now. 30812742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 3082158421SwollmanZone America/Montserrat -4:08:52 - LMT 1911 Jul 1 0:01 # Cork Hill 30832742Swollman -4:00 - AST 30842742Swollman 30852742Swollman# Nicaragua 308643543Swollman# 3087158421Swollman# This uses Shanks & Pottenger for times before 2005. 308843543Swollman# 3089149514Swollman# From Steffen Thorsen (2005-04-12): 3090149514Swollman# I've got reports from 8 different people that Nicaragua just started 3091149514Swollman# DST on Sunday 2005-04-10, in order to save energy because of 3092149514Swollman# expensive petroleum. The exact end date for DST is not yet 3093149514Swollman# announced, only "September" but some sites also say "mid-September". 3094149514Swollman# Some background information is available on the President's official site: 3095149514Swollman# http://www.presidencia.gob.ni/Presidencia/Files_index/Secretaria/Notas%20de%20Prensa/Presidente/2005/ABRIL/Gobierno-de-nicaragua-adelanta-hora-oficial-06abril.htm 3096149514Swollman# The Decree, no 23-2005 is available here: 3097149514Swollman# http://www.presidencia.gob.ni/buscador_gaceta/BD/DECRETOS/2005/Decreto%2023-2005%20Se%20adelanta%20en%20una%20hora%20en%20todo%20el%20territorio%20nacional%20apartir%20de%20las%2024horas%20del%2009%20de%20Abril.pdf 3098149514Swollman# 3099149514Swollman# From Paul Eggert (2005-05-01): 3100149514Swollman# The decree doesn't say anything about daylight saving, but for now let's 3101158421Swollman# assume that it is daylight saving.... 3102149514Swollman# 3103149514Swollman# From Gwillim Law (2005-04-21): 3104149514Swollman# The Associated Press story on the time change, which can be found at 3105149514Swollman# http://www.lapalmainteractivo.com/guias/content/gen/ap/America_Latina/AMC_GEN_NICARAGUA_HORA.html 3106149514Swollman# and elsewhere, says (fifth paragraph, translated from Spanish): "The last 3107149514Swollman# time that a change of clocks was applied to save energy was in the year 2000 3108149514Swollman# during the Arnoldo Aleman administration."... 3109149514Swollman# The northamerica file says that Nicaragua has been on UTC-6 continuously 3110149514Swollman# since December 1998. I wasn't able to find any details of Nicaraguan time 3111149514Swollman# changes in 2000. Perhaps a note could be added to the northamerica file, to 3112149514Swollman# the effect that we have indirect evidence that DST was observed in 2000. 3113149514Swollman# 3114153670Swollman# From Jesper Norgaard Welen (2005-11-02): 3115153670Swollman# Nicaragua left DST the 2005-10-02 at 00:00 (local time). 3116153670Swollman# http://www.presidencia.gob.ni/presidencia/files_index/secretaria/comunicados/2005/septiembre/26septiembre-cambio-hora.htm 3117153670Swollman# (2005-09-26) 3118153670Swollman# 3119158421Swollman# From Jesper Norgaard Welen (2006-05-05): 3120158421Swollman# http://www.elnuevodiario.com.ni/2006/05/01/nacionales/18410 3121158421Swollman# (my informal translation) 3122158421Swollman# By order of the president of the republic, Enrique Bolanos, Nicaragua 3123158421Swollman# advanced by sixty minutes their official time, yesterday at 2 in the 3124158421Swollman# morning, and will stay that way until 30.th. of september. 3125158421Swollman# 3126163302Sru# From Jesper Norgaard Welen (2006-09-30): 3127163302Sru# http://www.presidencia.gob.ni/buscador_gaceta/BD/DECRETOS/2006/D-063-2006P-PRN-Cambio-Hora.pdf 3128163302Sru# My informal translation runs: 3129163302Sru# The natural sun time is restored in all the national territory, in that the 3130163302Sru# time is returned one hour at 01:00 am of October 1 of 2006. 3131163302Sru# 31322742Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 31332742SwollmanRule Nic 1979 1980 - Mar Sun>=16 0:00 1:00 D 31342742SwollmanRule Nic 1979 1980 - Jun Mon>=23 0:00 0 S 3135149514SwollmanRule Nic 2005 only - Apr 10 0:00 1:00 D 3136163302SruRule Nic 2005 only - Oct Sun>=1 0:00 0 S 3137158421SwollmanRule Nic 2006 only - Apr 30 2:00 1:00 D 3138163302SruRule Nic 2006 only - Oct Sun>=1 1:00 0 S 31392742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 31402742SwollmanZone America/Managua -5:45:08 - LMT 1890 314186222Swollman -5:45:12 - MMT 1934 Jun 23 # Managua Mean Time? 31422742Swollman -6:00 - CST 1973 May 31432742Swollman -5:00 - EST 1975 Feb 16 3144158421Swollman -6:00 Nic C%sT 1992 Jan 1 4:00 3145158421Swollman -5:00 - EST 1992 Sep 24 3146158421Swollman -6:00 - CST 1993 3147158421Swollman -5:00 - EST 1997 3148149514Swollman -6:00 Nic C%sT 31492742Swollman 31502742Swollman# Panama 31512742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 31522742SwollmanZone America/Panama -5:18:08 - LMT 1890 315386222Swollman -5:19:36 - CMT 1908 Apr 22 # Colon Mean Time 31542742Swollman -5:00 - EST 31552742Swollman 31562742Swollman# Puerto Rico 31572742Swollman# There are too many San Juans elsewhere, so we'll use `Puerto_Rico'. 31582742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 315914343SwollmanZone America/Puerto_Rico -4:24:25 - LMT 1899 Mar 28 12:00 # San Juan 31602742Swollman -4:00 - AST 1942 May 3 3161158421Swollman -4:00 US A%sT 1946 31622742Swollman -4:00 - AST 31632742Swollman 31642742Swollman# St Kitts-Nevis 31652742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 31662742SwollmanZone America/St_Kitts -4:10:52 - LMT 1912 Mar 2 # Basseterre 31672742Swollman -4:00 - AST 31682742Swollman 31692742Swollman# St Lucia 31702742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 31712742SwollmanZone America/St_Lucia -4:04:00 - LMT 1890 # Castries 317286222Swollman -4:04:00 - CMT 1912 # Castries Mean Time 31732742Swollman -4:00 - AST 31742742Swollman 31752742Swollman# St Pierre and Miquelon 31762742Swollman# There are too many St Pierres elsewhere, so we'll use `Miquelon'. 31772742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 31782742SwollmanZone America/Miquelon -3:44:40 - LMT 1911 May 15 # St Pierre 31792742Swollman -4:00 - AST 1980 May 3180121098Swollman -3:00 - PMST 1987 # Pierre & Miquelon Time 3181121098Swollman -3:00 Canada PM%sT 31822742Swollman 31832742Swollman# St Vincent and the Grenadines 31842742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 31852742SwollmanZone America/St_Vincent -4:04:56 - LMT 1890 # Kingstown 318643014Swollman -4:04:56 - KMT 1912 # Kingstown Mean Time 31872742Swollman -4:00 - AST 31882742Swollman 31892742Swollman# Turks and Caicos 3190169811Swollman# 3191169811Swollman# From Chris Dunn in 3192169811Swollman# <http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=415007> 3193169811Swollman# (2007-03-15): In the Turks & Caicos Islands (America/Grand_Turk) the 3194169811Swollman# daylight saving dates for time changes have been adjusted to match 3195169811Swollman# the recent U.S. change of dates. 3196169811Swollman# 3197169811Swollman# From Brian Inglis (2007-04-28): 3198169811Swollman# http://www.turksandcaicos.tc/calendar/index.htm [2007-04-26] 3199169811Swollman# there is an entry for Nov 4 "Daylight Savings Time Ends 2007" and three 3200169811Swollman# rows before that there is an out of date entry for Oct: 3201169811Swollman# "Eastern Standard Times Begins 2007 3202169811Swollman# Clocks are set back one hour at 2:00 a.m. local Daylight Saving Time" 3203169811Swollman# indicating that the normal ET rules are followed. 3204169811Swollman# 3205169811Swollman# From Paul Eggert (2006-05-01): 3206158421Swollman# Shanks & Pottenger say they use US DST rules, but IATA SSIM (1991/1998) 3207169811Swollman# says they switch at midnight. Go with Shanks & Pottenger. 3208169811Swollman# 320920094Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 3210169811SwollmanRule TC 1979 1986 - Apr lastSun 2:00 1:00 D 3211169811SwollmanRule TC 1979 2006 - Oct lastSun 2:00 0 S 3212169811SwollmanRule TC 1987 2006 - Apr Sun>=1 2:00 1:00 D 3213169811SwollmanRule TC 2007 max - Mar Sun>=8 2:00 1:00 D 3214169811SwollmanRule TC 2007 max - Nov Sun>=1 2:00 0 S 32152742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 32162742SwollmanZone America/Grand_Turk -4:44:32 - LMT 1890 321743014Swollman -5:07:12 - KMT 1912 Feb # Kingston Mean Time 321820094Swollman -5:00 TC E%sT 32198029Swollman 322014343Swollman# British Virgin Is 32212742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 322214343SwollmanZone America/Tortola -4:18:28 - LMT 1911 Jul # Road Town 32232742Swollman -4:00 - AST 32248029Swollman 322514343Swollman# Virgin Is 322614343Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 322714343SwollmanZone America/St_Thomas -4:19:44 - LMT 1911 Jul # Charlotte Amalie 322814343Swollman -4:00 - AST 3229