1# @(#)northamerica 7.58
2# also includes Central America and the Caribbean
3
4# $FreeBSD: head/share/zoneinfo/northamerica 75267 2001-04-06 16:46:52Z wollman $
5
6# This data is by no means authoritative; if you think you know better,
7# go ahead and edit the file (and please send any changes to
8# tz@elsie.nci.nih.gov for general use in the future).
9
10# From Paul Eggert <eggert@twinsun.com> (1999-03-22):
11# A reliable and entertaining source about time zones is
12# Derek Howse, Greenwich time and longitude, Philip Wilson Publishers (1997).
--- 65 unchanged lines hidden (view full) ---
78# <a href="http://rowayton.org/rhs/hstaug45.html">:
79# "When the time is announced over the radio now, it is 'Eastern Peace
80# Time' instead of the old familiar 'Eastern War Time.' Peace is wonderful."
81# </a> (August 1945) by way of confirmation.
82
83# From Joseph Gallant <notquite@hotmail.com>, citing
84# George H. Douglas, _The Early Days of Radio Broadcasting_ (1987):
85# At 7 P.M. (Eastern War Time) [on 1945-08-14], the networks were set
86# to switch to London for Atlee's address, but the American people
87# never got to hear his speech live. According to one press account,
88# CBS' Bob Trout was first to announce the word of Japan's surrender,
89# but a few seconds later, NBC, ABC and Mutual also flashed the word
90# of surrender, all of whom interrupting the bells of Big Ben in
91# London which were to precede Mr. Atlee's speech.
92
93# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
94Rule US 1918 1919 - Mar lastSun 2:00 1:00 D
95Rule US 1918 1919 - Oct lastSun 2:00 0 S
96Rule US 1942 only - Feb 9 2:00 1:00 W # War
97Rule US 1945 only - Aug 14 23:00u 1:00 P # Peace
98Rule US 1945 only - Sep 30 2:00 0 S
99Rule US 1967 max - Oct lastSun 2:00 0 S
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182# Shanks uses 1983-10-30, not 1983-11-30, for the 1983 transitions.
183# Go with Shanks.
184#
185# From Paul Eggert (2000-01-08), following a heads-up from Rives McDow:
186# Public law 106-564 (2000-12-23) introduced the abbreviation
187# "Chamorro Standard Time" for time in Guam and the Northern Marianas.
188# See the file "australasia".
189
190# From Ryan Alessi of the Thousand Oaks Star (2001-02-15) via Rives McDow:
191# Brad Sherman, D-Sherman Oaks, introduced a bill in Congress on
192# Wednesday that could have California operating on Denver time as
193# early as this summer.... The options include keeping
194# daylight-saving time all year long, or setting clocks back two hours
195# -- instead of just one -- during the existing daylight-saving time.
196
197
198# US Eastern time, represented by New York
199
200# Connecticut, Delaware, District of Columbia, most of Florida,
201# Georgia, far southeastern Indiana, eastern Kentucky, Maine,
202# Maryland, Massachusetts, New Hampshire, New Jersey, New York, North
203# Carolina, Ohio, Pennsylvania, Rhode Island, South Carolina, eastern
204# Tennessee, Vermont, Virginia, West Virginia
205
206# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
207Rule NYC 1920 only - Mar lastSun 2:00 1:00 D
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212# Zone NAME GMTOFF RULES FORMAT [UNTIL]
213Zone America/New_York -4:56:02 - LMT 1883 Nov 18 12:00
214 -5:00 US E%sT 1920
215 -5:00 NYC E%sT 1942
216 -5:00 US E%sT 1946
217 -5:00 NYC E%sT 1967
218 -5:00 US E%sT
219
220# US Central time, represented by Chicago
221
222# Alabama, Arkansas, Florida panhandle, Illinois, western Indiana
223# corners, Iowa, most of Kansas, western Kentucky, Louisiana,
224# Minnesota, Mississippi, Missouri, eastern Nebraska, eastern North
225# Dakota, Oklahoma, eastern South Dakota, western Tennessee, most of
226# Texas, Wisconsin
227
228# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
--- 7 unchanged lines hidden (view full) ---
236Zone America/Chicago -5:50:36 - LMT 1883 Nov 18 12:00
237 -6:00 US C%sT 1920
238 -6:00 Chicago C%sT 1936 Mar 1 2:00
239 -5:00 - EST 1936 Nov 15 2:00
240 -6:00 Chicago C%sT 1942
241 -6:00 US C%sT 1946
242 -6:00 Chicago C%sT 1967
243 -6:00 US C%sT
244
245# US Mountain time, represented by Denver
246#
247# Colorado, southern Idaho, far western Kansas, Montana, western
248# Nebraska, New Mexico, southwestern North Dakota, far eastern Oregon,
249# western South Dakota, far western Texas (El Paso County, Hudspeth County,
250# and Pine Springs and Nickel Creek in Culberson County), Utah, Wyoming
251#
252# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
253Rule Denver 1920 1921 - Mar lastSun 2:00 1:00 D
254Rule Denver 1920 only - Oct lastSun 2:00 0 S
255Rule Denver 1921 only - May 22 2:00 0 S
256Rule Denver 1965 1966 - Apr lastSun 2:00 1:00 D
257Rule Denver 1965 1966 - Oct lastSun 2:00 0 S
258# Zone NAME GMTOFF RULES FORMAT [UNTIL]
259Zone America/Denver -6:59:56 - LMT 1883 Nov 18 12:00
260 -7:00 US M%sT 1920
261 -7:00 Denver M%sT 1942
262 -7:00 US M%sT 1946
263 -7:00 Denver M%sT 1967
264 -7:00 US M%sT
265
266# US Pacific time, represented by Los Angeles
267#
268# California, northern Idaho, Nevada, most of Oregon, and Washington
269#
270# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
271Rule CA 1948 only - Mar 14 2:00 1:00 D
272Rule CA 1949 only - Jan 1 2:00 0 S
273Rule CA 1950 1966 - Apr lastSun 2:00 1:00 D
274Rule CA 1950 1961 - Sep lastSun 2:00 0 S
275Rule CA 1962 1966 - Oct lastSun 2:00 0 S
276# Zone NAME GMTOFF RULES FORMAT [UNTIL]
277Zone America/Los_Angeles -7:52:58 - LMT 1883 Nov 18 12:00
278 -8:00 US P%sT 1946
279 -8:00 CA P%sT 1967
280 -8:00 US P%sT
281
282# Alaska
283# AK%sT is the modern abbreviation for -9:00 per USNO.
284#
285# From Paul Eggert (2001-04-01):
286# Howse writes that Alaska switched from the Julian to the Gregorian calendar,
287# and from east-of-GMT to west-of-GMT days, when the US bought it from Russia.
288# This was on 1867-10-18, a Friday; the previous day was 1867-10-06 Julian,
289# also a Friday. Include only the time zone part of this transition,
290# ignoring the switch from Julian to Gregorian, since we can't represent
291# the Julian calendar.
292#
293# Zone NAME GMTOFF RULES FORMAT [UNTIL]
294Zone America/Juneau 15:02:19 - LMT 1867 Oct 18
295 -8:57:41 - LMT 1900 Aug 20 12:00
296 -8:00 - PST 1942
297 -8:00 US P%sT 1946
298 -8:00 - PST 1969
299 -8:00 US P%sT 1983 Oct 30 2:00
300 -9:00 US AK%sT
--- 103 unchanged lines hidden (view full) ---
404# So we reluctantly put them all in a subdirectory `America/Indiana'.
405#
406# Most of EST-only Indiana last observed DST in 1970.
407
408# From Paul Eggert (2001-03-06), following a tip by Markus Kuhn:
409# Pam Belluck reported in the New York Times (2001-01-31) that the
410# Indiana Legislature is considering a bill to adopt DST statewide.
411# Her article mentioned Vevay, whose post office observes a different
412# time zone than Danner's Hardware across the street.
413
414# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
415Rule Indianapolis 1941 only - Jun 22 2:00 1:00 D
416Rule Indianapolis 1941 1954 - Sep lastSun 2:00 0 S
417Rule Indianapolis 1946 1954 - Apr lastSun 2:00 1:00 D
418# Zone NAME GMTOFF RULES FORMAT [UNTIL]
419Zone America/Indianapolis -5:44:38 - LMT 1883 Nov 18 12:00
420 -6:00 US C%sT 1920
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508# The three Lake Cumberland counties are the farthest east of any U.S.
509# location in the Central time zone.
510#
511# From Rich Wales (2000-08-29):
512# After prolonged debate, and despite continuing deep differences of opinion,
513# Wayne County (central Kentucky) is switching from Central (-0600) to Eastern
514# (-0500) time. They won't "fall back" this year. See Sara Shipley,
515# The difference an hour makes, Nando Times (2000-08-29 15:33 -0400).
516Zone America/Kentucky/Monticello -5:39:24 - LMT 1883 Nov 18 12:00
517 -6:00 US C%sT 1946
518 -6:00 - CST 1968
519 -6:00 US C%sT 2000 Oct 29 2:00
520 -5:00 US E%sT
521
522
523# From Rives McDow (2000-08-30):
524# Here ... are all the changes in the US since 1985.
525# Kearny County, KS (put all of county on central;
526# previously split between MST and CST) ... 1990-10
527# Starke County, IN (from CST to EST) ... 1991-10
528# Oliver County, ND (from MST to CST) ... 1992-10
529# West Wendover, NV (from PST TO MST) ... 1999-10
530# Wayne County, KY (from CST to EST) ... 2000-10
531# There is another change in the offing; Mercer County, ND is looking
532# to change from MT to CT. It is possible that two other ND counties
533# (Sioux and Morton) will look to change also. If made, the earliest
534# a change would be effective is October 2001.
535#
536# From Paul Eggert (2000-10-02):
537# FIXME: I haven't yet had time to incorporate all the above changes.
538
539# Michigan
540#
541# From Bob Devine (1988-01-28):
542# Michigan didn't observe DST from 1968 to 1973.
543#
544# From Paul Eggert (1999-03-31):
545# Shanks writes that Michigan started using standard time on 1885-09-18,
--- 40 unchanged lines hidden (view full) ---
586# Zone NAME GMTOFF RULES FORMAT [UNTIL]
587Zone America/Menominee -5:50:27 - LMT 1885 Sep 18 12:00
588 -6:00 US C%sT 1946
589 -6:00 Menominee C%sT 1969 Apr 27 2:00
590 -5:00 - EST 1973 Apr 29 2:00
591 -6:00 US C%sT
592
593# Navassa
594# claimed by US under the provisions of the 1856 Guano Islands Act
595# also claimed by Haiti
596# occupied 1857/1900 by the Navassa Phosphate Co
597# US lighthouse 1917/1997-01
598# currently uninhabited
599# see Mark Fineman, ``An Isle Rich in Guano and Discord'',
600# _Los Angeles Times_ (1998-11-10), A1, A10; it cites
601# Jimmy Skaggs, _The Great Guano Rush_ (1994).
602
603# Old names, for S5 users
604
605# Link LINK-FROM LINK-TO
--- 8 unchanged lines hidden (view full) ---
614################################################################################
615
616
617# From Paul Eggert <eggert@twinsun.com> (1999-10-29):
618# A good source for time zone historical data outside the US is
619# Thomas G. Shanks, The International Atlas (5th edition),
620# San Diego: ACS Publications, Inc. (1999).
621#
622# Gwillim Law <Gwil_Law@bridge-point.com> writes that a good source
623# for recent time zone data is the International Air Transport
624# Association's Standard Schedules Information Manual (IATA SSIM),
625# published semiannually. Law sent in several helpful summaries
626# of the IATA's data after 1990.
627#
628# Except where otherwise noted, Shanks is the source for entries through 1990,
629# and IATA SSIM is the source for entries after 1990.
630#
--- 442 unchanged lines hidden (view full) ---
1073#
1074# From Antoine Leca (1999-09-06):
1075# We then need to create a new timezone for the Kitikmeot region of Nunavut
1076# to differentiate it from the Yellowknife region.
1077
1078# From Paul Eggert (1999-09-20):
1079# <a href="http://www.nunavut.com/basicfacts/english/basicfacts_1territory.html">
1080# Basic Facts: The New Territory
1081# </a> (1999) reports that Pangnirtung operates on Eastern time,
1082# and that Coral Harbour does not observe DST. We don't know when
1083# Pangnirtung switched to Eastern time; we'll guess 1995.
1084# We'll ignore the claim about Coral Harbour for now,
1085# since we have no further info.
1086
1087# From Rives McDow (1999-11-08):
1088# On October 31, when the rest of Nunavut went to Central time,
1089# Pangnirtung wobbled. Here is the result of their wobble:
1090#
1091# The following businesses and organizations in Pangnirtung use Central Time:
--- 238 unchanged lines hidden (view full) ---
1330# saving. The modification reverts this to only cover Baja California
1331# (Norte), while all other states (except Sonora, who has no daylight
1332# saving all year) will follow the original decree of president
1333# Vicente Fox, starting daylight saving May 6, 2001 and ending
1334# September 30, 2001.
1335# References: "Diario de Monterrey" <www.diariodemonterrey.com/index.asp>
1336# Palabra <http://palabra.infosel.com/010331/primera/ppri3101.pdf> (2001-03-31)
1337
1338# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1339Rule Mexico 1939 only - Feb 5 0:00 1:00 D
1340Rule Mexico 1939 only - Jun 25 0:00 0 S
1341Rule Mexico 1940 only - Dec 9 0:00 1:00 D
1342Rule Mexico 1941 only - Apr 1 0:00 0 S
1343Rule Mexico 1943 only - Dec 16 0:00 1:00 W
1344Rule Mexico 1944 only - May 1 0:00 0 S
1345Rule Mexico 1950 only - Feb 12 0:00 1:00 D
--- 20 unchanged lines hidden (view full) ---
1366 -6:00 Mexico C%sT
1367# Central Mexico
1368Zone America/Mexico_City -6:36:36 - LMT 1922 Jan 1 0:23:24
1369 -7:00 - MST 1927 Jun 10 23:00
1370 -6:00 - CST 1930 Nov 15
1371 -7:00 - MST 1931 May 1 23:00
1372 -6:00 - CST 1931 Oct
1373 -7:00 - MST 1932 Apr 1
1374 -6:00 Mexico C%sT
1375# Chihuahua
1376Zone America/Chihuahua -7:04:20 - LMT 1921 Dec 31 23:55:40
1377 -7:00 - MST 1927 Jun 10 23:00
1378 -6:00 - CST 1930 Nov 15
1379 -7:00 - MST 1931 May 1 23:00
1380 -6:00 - CST 1931 Oct
1381 -7:00 - MST 1932 Apr 1
1382 -6:00 - CST 1996
--- 284 unchanged lines hidden (view full) ---
1667 -5:07:12 - KMT 1912 Feb # Kingston Mean Time
1668 -5:00 - EST 1974 Apr 28 2:00
1669 -5:00 US E%sT 1984
1670 -5:00 - EST
1671
1672# Martinique
1673# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1674Zone America/Martinique -4:04:20 - LMT 1890 # Fort-de-France
1675 -4:04 - FFMT 1911 May # Fort-de-France MT
1676 -4:00 - AST 1980 Apr 6
1677 -4:00 1:00 ADT 1980 Sep 28
1678 -4:00 - AST
1679
1680# Montserrat
1681# From Paul Eggert (1997-08-31):
1682# Recent volcanic eruptions have forced evacuation of Plymouth, the capital.
1683# Luckily, Olveston, the current de facto capital, has the same longitude.
--- 9 unchanged lines hidden (view full) ---
1693#
1694# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1695Rule Nic 1979 1980 - Mar Sun>=16 0:00 1:00 D
1696Rule Nic 1979 1980 - Jun Mon>=23 0:00 0 S
1697Rule Nic 1992 only - Jan 1 4:00 1:00 D
1698Rule Nic 1992 only - Sep 24 0:00 0 S
1699# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1700Zone America/Managua -5:45:08 - LMT 1890
1701 -5:45 - MMT 1934 Jun 23 # Managua Mean Time
1702 -6:00 - CST 1973 May
1703 -5:00 - EST 1975 Feb 16
1704 -6:00 Nic C%sT 1993 Jan 1 4:00
1705 -5:00 - EST 1998 Dec
1706 -6:00 - CST
1707
1708# Panama
1709# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1710Zone America/Panama -5:18:08 - LMT 1890
1711 -5:20 - PMT 1908 Apr 22 # Panama Mean Time
1712 -5:00 - EST
1713
1714# Puerto Rico
1715# There are too many San Juans elsewhere, so we'll use `Puerto_Rico'.
1716# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1717Zone America/Puerto_Rico -4:24:25 - LMT 1899 Mar 28 12:00 # San Juan
1718 -4:00 - AST 1942 May 3
1719 -4:00 1:00 AWT 1945 Sep 30 2:00
1720 -4:00 - AST
1721
1722# St Kitts-Nevis
1723# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1724Zone America/St_Kitts -4:10:52 - LMT 1912 Mar 2 # Basseterre
1725 -4:00 - AST
1726
1727# St Lucia
1728# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1729Zone America/St_Lucia -4:04:00 - LMT 1890 # Castries
1730 -4:04 - CMT 1912 # Castries Mean Time
1731 -4:00 - AST
1732
1733# St Pierre and Miquelon
1734# There are too many St Pierres elsewhere, so we'll use `Miquelon'.
1735# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1736Zone America/Miquelon -3:44:40 - LMT 1911 May 15 # St Pierre
1737 -4:00 - AST 1980 May
1738 -3:00 Mont PM%sT # Pierre & Miquelon Time
--- 29 unchanged lines hidden ---
2# also includes Central America and the Caribbean
3
4# $FreeBSD: head/share/zoneinfo/northamerica 75267 2001-04-06 16:46:52Z wollman $
5
6# This data is by no means authoritative; if you think you know better,
7# go ahead and edit the file (and please send any changes to
8# tz@elsie.nci.nih.gov for general use in the future).
9
10# From Paul Eggert <eggert@twinsun.com> (1999-03-22):
11# A reliable and entertaining source about time zones is
12# Derek Howse, Greenwich time and longitude, Philip Wilson Publishers (1997).
--- 65 unchanged lines hidden (view full) ---
78# <a href="http://rowayton.org/rhs/hstaug45.html">:
79# "When the time is announced over the radio now, it is 'Eastern Peace
80# Time' instead of the old familiar 'Eastern War Time.' Peace is wonderful."
81# </a> (August 1945) by way of confirmation.
82
83# From Joseph Gallant <notquite@hotmail.com>, citing
84# George H. Douglas, _The Early Days of Radio Broadcasting_ (1987):
85# At 7 P.M. (Eastern War Time) [on 1945-08-14], the networks were set
86# to switch to London for Atlee's address, but the American people
87# never got to hear his speech live. According to one press account,
88# CBS' Bob Trout was first to announce the word of Japan's surrender,
89# but a few seconds later, NBC, ABC and Mutual also flashed the word
90# of surrender, all of whom interrupting the bells of Big Ben in
91# London which were to precede Mr. Atlee's speech.
92
93# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
94Rule US 1918 1919 - Mar lastSun 2:00 1:00 D
95Rule US 1918 1919 - Oct lastSun 2:00 0 S
96Rule US 1942 only - Feb 9 2:00 1:00 W # War
97Rule US 1945 only - Aug 14 23:00u 1:00 P # Peace
98Rule US 1945 only - Sep 30 2:00 0 S
99Rule US 1967 max - Oct lastSun 2:00 0 S
--- 82 unchanged lines hidden (view full) ---
182# Shanks uses 1983-10-30, not 1983-11-30, for the 1983 transitions.
183# Go with Shanks.
184#
185# From Paul Eggert (2000-01-08), following a heads-up from Rives McDow:
186# Public law 106-564 (2000-12-23) introduced the abbreviation
187# "Chamorro Standard Time" for time in Guam and the Northern Marianas.
188# See the file "australasia".
189
190# From Ryan Alessi of the Thousand Oaks Star (2001-02-15) via Rives McDow:
191# Brad Sherman, D-Sherman Oaks, introduced a bill in Congress on
192# Wednesday that could have California operating on Denver time as
193# early as this summer.... The options include keeping
194# daylight-saving time all year long, or setting clocks back two hours
195# -- instead of just one -- during the existing daylight-saving time.
196
197
198# US Eastern time, represented by New York
199
200# Connecticut, Delaware, District of Columbia, most of Florida,
201# Georgia, far southeastern Indiana, eastern Kentucky, Maine,
202# Maryland, Massachusetts, New Hampshire, New Jersey, New York, North
203# Carolina, Ohio, Pennsylvania, Rhode Island, South Carolina, eastern
204# Tennessee, Vermont, Virginia, West Virginia
205
206# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
207Rule NYC 1920 only - Mar lastSun 2:00 1:00 D
--- 4 unchanged lines hidden (view full) ---
212# Zone NAME GMTOFF RULES FORMAT [UNTIL]
213Zone America/New_York -4:56:02 - LMT 1883 Nov 18 12:00
214 -5:00 US E%sT 1920
215 -5:00 NYC E%sT 1942
216 -5:00 US E%sT 1946
217 -5:00 NYC E%sT 1967
218 -5:00 US E%sT
219
220# US Central time, represented by Chicago
221
222# Alabama, Arkansas, Florida panhandle, Illinois, western Indiana
223# corners, Iowa, most of Kansas, western Kentucky, Louisiana,
224# Minnesota, Mississippi, Missouri, eastern Nebraska, eastern North
225# Dakota, Oklahoma, eastern South Dakota, western Tennessee, most of
226# Texas, Wisconsin
227
228# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
--- 7 unchanged lines hidden (view full) ---
236Zone America/Chicago -5:50:36 - LMT 1883 Nov 18 12:00
237 -6:00 US C%sT 1920
238 -6:00 Chicago C%sT 1936 Mar 1 2:00
239 -5:00 - EST 1936 Nov 15 2:00
240 -6:00 Chicago C%sT 1942
241 -6:00 US C%sT 1946
242 -6:00 Chicago C%sT 1967
243 -6:00 US C%sT
244
245# US Mountain time, represented by Denver
246#
247# Colorado, southern Idaho, far western Kansas, Montana, western
248# Nebraska, New Mexico, southwestern North Dakota, far eastern Oregon,
249# western South Dakota, far western Texas (El Paso County, Hudspeth County,
250# and Pine Springs and Nickel Creek in Culberson County), Utah, Wyoming
251#
252# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
253Rule Denver 1920 1921 - Mar lastSun 2:00 1:00 D
254Rule Denver 1920 only - Oct lastSun 2:00 0 S
255Rule Denver 1921 only - May 22 2:00 0 S
256Rule Denver 1965 1966 - Apr lastSun 2:00 1:00 D
257Rule Denver 1965 1966 - Oct lastSun 2:00 0 S
258# Zone NAME GMTOFF RULES FORMAT [UNTIL]
259Zone America/Denver -6:59:56 - LMT 1883 Nov 18 12:00
260 -7:00 US M%sT 1920
261 -7:00 Denver M%sT 1942
262 -7:00 US M%sT 1946
263 -7:00 Denver M%sT 1967
264 -7:00 US M%sT
265
266# US Pacific time, represented by Los Angeles
267#
268# California, northern Idaho, Nevada, most of Oregon, and Washington
269#
270# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
271Rule CA 1948 only - Mar 14 2:00 1:00 D
272Rule CA 1949 only - Jan 1 2:00 0 S
273Rule CA 1950 1966 - Apr lastSun 2:00 1:00 D
274Rule CA 1950 1961 - Sep lastSun 2:00 0 S
275Rule CA 1962 1966 - Oct lastSun 2:00 0 S
276# Zone NAME GMTOFF RULES FORMAT [UNTIL]
277Zone America/Los_Angeles -7:52:58 - LMT 1883 Nov 18 12:00
278 -8:00 US P%sT 1946
279 -8:00 CA P%sT 1967
280 -8:00 US P%sT
281
282# Alaska
283# AK%sT is the modern abbreviation for -9:00 per USNO.
284#
285# From Paul Eggert (2001-04-01):
286# Howse writes that Alaska switched from the Julian to the Gregorian calendar,
287# and from east-of-GMT to west-of-GMT days, when the US bought it from Russia.
288# This was on 1867-10-18, a Friday; the previous day was 1867-10-06 Julian,
289# also a Friday. Include only the time zone part of this transition,
290# ignoring the switch from Julian to Gregorian, since we can't represent
291# the Julian calendar.
292#
293# Zone NAME GMTOFF RULES FORMAT [UNTIL]
294Zone America/Juneau 15:02:19 - LMT 1867 Oct 18
295 -8:57:41 - LMT 1900 Aug 20 12:00
296 -8:00 - PST 1942
297 -8:00 US P%sT 1946
298 -8:00 - PST 1969
299 -8:00 US P%sT 1983 Oct 30 2:00
300 -9:00 US AK%sT
--- 103 unchanged lines hidden (view full) ---
404# So we reluctantly put them all in a subdirectory `America/Indiana'.
405#
406# Most of EST-only Indiana last observed DST in 1970.
407
408# From Paul Eggert (2001-03-06), following a tip by Markus Kuhn:
409# Pam Belluck reported in the New York Times (2001-01-31) that the
410# Indiana Legislature is considering a bill to adopt DST statewide.
411# Her article mentioned Vevay, whose post office observes a different
412# time zone than Danner's Hardware across the street.
413
414# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
415Rule Indianapolis 1941 only - Jun 22 2:00 1:00 D
416Rule Indianapolis 1941 1954 - Sep lastSun 2:00 0 S
417Rule Indianapolis 1946 1954 - Apr lastSun 2:00 1:00 D
418# Zone NAME GMTOFF RULES FORMAT [UNTIL]
419Zone America/Indianapolis -5:44:38 - LMT 1883 Nov 18 12:00
420 -6:00 US C%sT 1920
--- 87 unchanged lines hidden (view full) ---
508# The three Lake Cumberland counties are the farthest east of any U.S.
509# location in the Central time zone.
510#
511# From Rich Wales (2000-08-29):
512# After prolonged debate, and despite continuing deep differences of opinion,
513# Wayne County (central Kentucky) is switching from Central (-0600) to Eastern
514# (-0500) time. They won't "fall back" this year. See Sara Shipley,
515# The difference an hour makes, Nando Times (2000-08-29 15:33 -0400).
516Zone America/Kentucky/Monticello -5:39:24 - LMT 1883 Nov 18 12:00
517 -6:00 US C%sT 1946
518 -6:00 - CST 1968
519 -6:00 US C%sT 2000 Oct 29 2:00
520 -5:00 US E%sT
521
522
523# From Rives McDow (2000-08-30):
524# Here ... are all the changes in the US since 1985.
525# Kearny County, KS (put all of county on central;
526# previously split between MST and CST) ... 1990-10
527# Starke County, IN (from CST to EST) ... 1991-10
528# Oliver County, ND (from MST to CST) ... 1992-10
529# West Wendover, NV (from PST TO MST) ... 1999-10
530# Wayne County, KY (from CST to EST) ... 2000-10
531# There is another change in the offing; Mercer County, ND is looking
532# to change from MT to CT. It is possible that two other ND counties
533# (Sioux and Morton) will look to change also. If made, the earliest
534# a change would be effective is October 2001.
535#
536# From Paul Eggert (2000-10-02):
537# FIXME: I haven't yet had time to incorporate all the above changes.
538
539# Michigan
540#
541# From Bob Devine (1988-01-28):
542# Michigan didn't observe DST from 1968 to 1973.
543#
544# From Paul Eggert (1999-03-31):
545# Shanks writes that Michigan started using standard time on 1885-09-18,
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586# Zone NAME GMTOFF RULES FORMAT [UNTIL]
587Zone America/Menominee -5:50:27 - LMT 1885 Sep 18 12:00
588 -6:00 US C%sT 1946
589 -6:00 Menominee C%sT 1969 Apr 27 2:00
590 -5:00 - EST 1973 Apr 29 2:00
591 -6:00 US C%sT
592
593# Navassa
594# claimed by US under the provisions of the 1856 Guano Islands Act
595# also claimed by Haiti
596# occupied 1857/1900 by the Navassa Phosphate Co
597# US lighthouse 1917/1997-01
598# currently uninhabited
599# see Mark Fineman, ``An Isle Rich in Guano and Discord'',
600# _Los Angeles Times_ (1998-11-10), A1, A10; it cites
601# Jimmy Skaggs, _The Great Guano Rush_ (1994).
602
603# Old names, for S5 users
604
605# Link LINK-FROM LINK-TO
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614################################################################################
615
616
617# From Paul Eggert <eggert@twinsun.com> (1999-10-29):
618# A good source for time zone historical data outside the US is
619# Thomas G. Shanks, The International Atlas (5th edition),
620# San Diego: ACS Publications, Inc. (1999).
621#
622# Gwillim Law <Gwil_Law@bridge-point.com> writes that a good source
623# for recent time zone data is the International Air Transport
624# Association's Standard Schedules Information Manual (IATA SSIM),
625# published semiannually. Law sent in several helpful summaries
626# of the IATA's data after 1990.
627#
628# Except where otherwise noted, Shanks is the source for entries through 1990,
629# and IATA SSIM is the source for entries after 1990.
630#
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1073#
1074# From Antoine Leca (1999-09-06):
1075# We then need to create a new timezone for the Kitikmeot region of Nunavut
1076# to differentiate it from the Yellowknife region.
1077
1078# From Paul Eggert (1999-09-20):
1079# <a href="http://www.nunavut.com/basicfacts/english/basicfacts_1territory.html">
1080# Basic Facts: The New Territory
1081# </a> (1999) reports that Pangnirtung operates on Eastern time,
1082# and that Coral Harbour does not observe DST. We don't know when
1083# Pangnirtung switched to Eastern time; we'll guess 1995.
1084# We'll ignore the claim about Coral Harbour for now,
1085# since we have no further info.
1086
1087# From Rives McDow (1999-11-08):
1088# On October 31, when the rest of Nunavut went to Central time,
1089# Pangnirtung wobbled. Here is the result of their wobble:
1090#
1091# The following businesses and organizations in Pangnirtung use Central Time:
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1330# saving. The modification reverts this to only cover Baja California
1331# (Norte), while all other states (except Sonora, who has no daylight
1332# saving all year) will follow the original decree of president
1333# Vicente Fox, starting daylight saving May 6, 2001 and ending
1334# September 30, 2001.
1335# References: "Diario de Monterrey" <www.diariodemonterrey.com/index.asp>
1336# Palabra <http://palabra.infosel.com/010331/primera/ppri3101.pdf> (2001-03-31)
1337
1338# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1339Rule Mexico 1939 only - Feb 5 0:00 1:00 D
1340Rule Mexico 1939 only - Jun 25 0:00 0 S
1341Rule Mexico 1940 only - Dec 9 0:00 1:00 D
1342Rule Mexico 1941 only - Apr 1 0:00 0 S
1343Rule Mexico 1943 only - Dec 16 0:00 1:00 W
1344Rule Mexico 1944 only - May 1 0:00 0 S
1345Rule Mexico 1950 only - Feb 12 0:00 1:00 D
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1366 -6:00 Mexico C%sT
1367# Central Mexico
1368Zone America/Mexico_City -6:36:36 - LMT 1922 Jan 1 0:23:24
1369 -7:00 - MST 1927 Jun 10 23:00
1370 -6:00 - CST 1930 Nov 15
1371 -7:00 - MST 1931 May 1 23:00
1372 -6:00 - CST 1931 Oct
1373 -7:00 - MST 1932 Apr 1
1374 -6:00 Mexico C%sT
1375# Chihuahua
1376Zone America/Chihuahua -7:04:20 - LMT 1921 Dec 31 23:55:40
1377 -7:00 - MST 1927 Jun 10 23:00
1378 -6:00 - CST 1930 Nov 15
1379 -7:00 - MST 1931 May 1 23:00
1380 -6:00 - CST 1931 Oct
1381 -7:00 - MST 1932 Apr 1
1382 -6:00 - CST 1996
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1667 -5:07:12 - KMT 1912 Feb # Kingston Mean Time
1668 -5:00 - EST 1974 Apr 28 2:00
1669 -5:00 US E%sT 1984
1670 -5:00 - EST
1671
1672# Martinique
1673# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1674Zone America/Martinique -4:04:20 - LMT 1890 # Fort-de-France
1675 -4:04 - FFMT 1911 May # Fort-de-France MT
1676 -4:00 - AST 1980 Apr 6
1677 -4:00 1:00 ADT 1980 Sep 28
1678 -4:00 - AST
1679
1680# Montserrat
1681# From Paul Eggert (1997-08-31):
1682# Recent volcanic eruptions have forced evacuation of Plymouth, the capital.
1683# Luckily, Olveston, the current de facto capital, has the same longitude.
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1693#
1694# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1695Rule Nic 1979 1980 - Mar Sun>=16 0:00 1:00 D
1696Rule Nic 1979 1980 - Jun Mon>=23 0:00 0 S
1697Rule Nic 1992 only - Jan 1 4:00 1:00 D
1698Rule Nic 1992 only - Sep 24 0:00 0 S
1699# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1700Zone America/Managua -5:45:08 - LMT 1890
1701 -5:45 - MMT 1934 Jun 23 # Managua Mean Time
1702 -6:00 - CST 1973 May
1703 -5:00 - EST 1975 Feb 16
1704 -6:00 Nic C%sT 1993 Jan 1 4:00
1705 -5:00 - EST 1998 Dec
1706 -6:00 - CST
1707
1708# Panama
1709# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1710Zone America/Panama -5:18:08 - LMT 1890
1711 -5:20 - PMT 1908 Apr 22 # Panama Mean Time
1712 -5:00 - EST
1713
1714# Puerto Rico
1715# There are too many San Juans elsewhere, so we'll use `Puerto_Rico'.
1716# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1717Zone America/Puerto_Rico -4:24:25 - LMT 1899 Mar 28 12:00 # San Juan
1718 -4:00 - AST 1942 May 3
1719 -4:00 1:00 AWT 1945 Sep 30 2:00
1720 -4:00 - AST
1721
1722# St Kitts-Nevis
1723# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1724Zone America/St_Kitts -4:10:52 - LMT 1912 Mar 2 # Basseterre
1725 -4:00 - AST
1726
1727# St Lucia
1728# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1729Zone America/St_Lucia -4:04:00 - LMT 1890 # Castries
1730 -4:04 - CMT 1912 # Castries Mean Time
1731 -4:00 - AST
1732
1733# St Pierre and Miquelon
1734# There are too many St Pierres elsewhere, so we'll use `Miquelon'.
1735# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1736Zone America/Miquelon -3:44:40 - LMT 1911 May 15 # St Pierre
1737 -4:00 - AST 1980 May
1738 -3:00 Mont PM%sT # Pierre & Miquelon Time
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