northamerica revision 17200
1# @(#)northamerica 7.26 2# also includes Central America and the Caribbean 3 4# This data is by no means authoritative; if you think you know better, 5# go ahead and edit the file (and please send any changes to 6# tz@elsie.nci.nih.gov for general use in the future). 7 8# From Paul Eggert <eggert@twinsun.com> (August 17, 1994): 9# A reliable and entertaining source about time zones is 10# Derek Howse, Greenwich time and the discovery of the longitude, 11# Oxford University Press (1980). 12 13############################################################################### 14 15# United States 16 17# From Paul Eggert <eggert@twinsun.com> (1995-12-19): 18# A good source for time zone historical data in the US is 19# Thomas G. Shanks, The American Atlas (5th edition), 20# San Diego: ACS Publications, Inc. (1991). 21# Make sure you have the errata sheet; the book is somewhat useless without it. 22# It is the source for the US and Puerto Rico entries below. 23 24# From Paul Eggert (1996-06-12): 25# Daylight Saving Time was first suggested as a joke by Benjamin Franklin 26# in his whimsical essay ``Turkey vs Eagle, McCauley is my Beagle'' (1784). 27# Not everyone is happy with the results: 28# 29# I don't really care how time is reckoned so long as there is some 30# agreement about it, but I object to being told that I am saving 31# daylight when my reason tells me that I am doing nothing of the kind. 32# I even object to the implication that I am wasting something 33# valuable if I stay in bed after the sun has risen. As an admirer 34# of moonlight I resent the bossy insistence of those who want to 35# reduce my time for enjoying it. At the back of the Daylight Saving 36# scheme I detect the bony, blue-fingered hand of Puritanism, eager 37# to push people into bed earlier, and get them up earlier, to make 38# them healthy, wealthy and wise in spite of themselves. 39# 40# -- Robertson Davies, The Diary of Samuel Marchbanks (1947), XIX, Sunday 41 42# From Arthur David Olson: 43# US Daylight Saving Time ended on the last Sunday of *October* in 1974. 44# See, for example, the front page of the Saturday, October 26, 1974 45# and Sunday, October 27, 1974 editions of the Washington Post. 46 47# From Arthur David Olson: 48# Before the Uniform Time Act of 1966 took effect in 1967, observance of 49# Daylight Saving Time in the US was by local option, except during wartime. 50 51# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 52Rule US 1918 1919 - Mar lastSun 2:00 1:00 W # War 53Rule US 1918 1919 - Oct lastSun 2:00 0 S 54Rule US 1942 only - Feb 9 2:00 1:00 W # War 55Rule US 1945 only - Sep 30 2:00 0 S 56Rule US 1967 max - Oct lastSun 2:00 0 S 57Rule US 1967 1973 - Apr lastSun 2:00 1:00 D 58Rule US 1974 only - Jan 6 2:00 1:00 D 59Rule US 1975 only - Feb 23 2:00 1:00 D 60Rule US 1976 1986 - Apr lastSun 2:00 1:00 D 61Rule US 1987 max - Apr Sun>=1 2:00 1:00 D 62 63# From Bob Devine (January 28, 1988): 64# ...Alaska (and Hawaii) had the timezone names changed in 1967. 65# old new 66# Pacific Standard Time(PST) -same- 67# Yukon Standard Time(YST) -same- 68# Central Alaska S.T. (CAT) Alaska-Hawaii St[an]dard Time (AHST) 69# Nome Standard Time (NT) Bering Standard Time (BST) 70# 71# ...Alaska's timezone lines were redrawn in 1983 to give only 2 tz. 72# The YST zone now covers nearly all of the state, AHST just part 73# of the Aleutian islands. No DST. 74 75# From Paul Eggert (1995-12-19): 76# The tables below use `NST', not `NT', for Nome Standard Time. 77# I invented `CAWT' for Central Alaska War Time. 78 79# From U. S. Naval Observatory (January 19, 1989): 80# USA EASTERN 5 H BEHIND UTC NEW YORK, WASHINGTON 81# USA EASTERN 4 H BEHIND UTC APR 3 - OCT 30 82# USA CENTRAL 6 H BEHIND UTC CHICAGO, HOUSTON 83# USA CENTRAL 5 H BEHIND UTC APR 3 - OCT 30 84# USA MOUNTAIN 7 H BEHIND UTC DENVER 85# USA MOUNTAIN 6 H BEHIND UTC APR 3 - OCT 30 86# USA PACIFIC 8 H BEHIND UTC L.A., SAN FRANCISCO 87# USA PACIFIC 7 H BEHIND UTC APR 3 - OCT 30 88# USA ALASKA STD 9 H BEHIND UTC MOST OF ALASKA (AKST) 89# USA ALASKA STD 8 H BEHIND UTC APR 3 - OCT 30 (AKDT) 90# USA ALEUTIAN 10 H BEHIND UTC ISLANDS WEST OF 170W 91# USA - " - 9 H BEHIND UTC APR 3 - OCT 30 92# USA HAWAII 10 H BEHIND UTC 93# USA BERING 11 H BEHIND UTC SAMOA, MIDWAY 94 95# From Arthur David Olson (January 21, 1989): 96# The above dates are for 1988. 97# Note the "AKST" and "AKDT" abbreviations, the claim that there's 98# no DST in Samoa, and the claim that there is DST in Alaska and the 99# Aleutians. 100 101# From Arthur David Olson (February 13, 1988): 102# Legal standard time zone names, from United States Code (1982 Edition and 103# Supplement III), Title 15, Chapter 6, Section 260 and forward. First, names 104# up to April 1, 1967 (when most provisions of the Uniform Time Act of 1966 105# took effect), as explained in sections 263 and 261: 106# (none) 107# United States standard eastern time 108# United States standard mountain time 109# United States standard central time 110# United States standard Pacific time 111# (none) 112# United States standard Alaska time 113# (none) 114# Next, names from April 1, 1967 until November 30, 1983 (the date for 115# public law 98-181): 116# Atlantic standard time 117# eastern standard time 118# central standard time 119# mountain standard time 120# Pacific standard time 121# Yukon standard time 122# Alaska-Hawaii standard time 123# Bering standard time 124# And after November 30, 1983: 125# Atlantic standard time 126# eastern standard time 127# central standard time 128# mountain standard time 129# Pacific standard time 130# Alaska standard time 131# Hawaii-Aleutian standard time 132# Samoa standard time 133# The law doesn't give abbreviations. 134# 135# From Paul Eggert (1995-12-19): 136# Shanks uses 1983-10-30, not 1983-11-30, for the 1983 transitions. 137# Go with Shanks. 138 139# US Eastern time, represented by New York 140# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER 141Rule NYC 1920 only - Mar lastSun 2:00 1:00 D 142Rule NYC 1920 only - Oct lastSun 2:00 0 S 143Rule NYC 1921 1966 - Apr lastSun 2:00 1:00 D 144Rule NYC 1921 1954 - Sep lastSun 2:00 0 S 145Rule NYC 1955 1966 - Oct lastSun 2:00 0 S 146# Zone NAME GMTOFF RULES FORMAT [UNTIL] 147Zone America/New_York -4:56:02 - LMT 1883 Nov 18 12:00 148 -5:00 US E%sT 1920 149 -5:00 NYC E%sT 1942 150 -5:00 US E%sT 1946 151 -5:00 NYC E%sT 1967 152 -5:00 US E%sT 153# ZONE-DESCR America New_York United_States Eastern time (except IN, KY, MI) 154 155# US Central time, represented by Chicago 156# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER 157Rule Chicago 1920 only - Jun 13 2:00 1:00 D 158Rule Chicago 1920 1921 - Oct lastSun 2:00 0 S 159Rule Chicago 1921 only - Mar lastSun 2:00 1:00 D 160Rule Chicago 1922 1966 - Apr lastSun 2:00 1:00 D 161Rule Chicago 1922 1954 - Sep lastSun 2:00 0 S 162Rule Chicago 1955 1966 - Oct lastSun 2:00 0 S 163# Zone NAME GMTOFF RULES FORMAT [UNTIL] 164Zone America/Chicago -5:50:36 - LMT 1883 Nov 18 12:00 165 -6:00 US C%sT 1920 166 -6:00 Chicago C%sT 1936 Mar 1 2:00 167 -5:00 - EST 1936 Nov 15 2:00 168 -6:00 Chicago C%sT 1942 169 -6:00 US C%sT 1946 170 -6:00 Chicago C%sT 1967 171 -6:00 US C%sT 172# ZONE-DESCR America Chicago United_States Central time 173 174# US Mountain time, represented by Denver 175# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER 176Rule Denver 1920 1921 - Mar lastSun 2:00 1:00 D 177Rule Denver 1920 only - Oct lastSun 2:00 0 S 178Rule Denver 1921 only - May 22 2:00 0 S 179Rule Denver 1965 1966 - Apr lastSun 2:00 1:00 D 180Rule Denver 1965 1966 - Oct lastSun 2:00 0 S 181# Zone NAME GMTOFF RULES FORMAT [UNTIL] 182Zone America/Denver -6:59:56 - LMT 1883 Nov 18 12:00 183 -7:00 US M%sT 1920 184 -7:00 Denver M%sT 1942 185 -7:00 US M%sT 1946 186 -7:00 Denver M%sT 1967 187 -7:00 US M%sT 188# ZONE-DESCR America Denver United_States Mountain time (except Arizona) 189 190# US Pacific time, represented by Los Angeles 191# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER 192Rule CA 1948 only - Mar 14 2:00 1:00 D 193Rule CA 1949 only - Jan 1 2:00 0 S 194Rule CA 1950 1966 - Apr lastSun 2:00 1:00 D 195Rule CA 1950 1961 - Sep lastSun 2:00 0 S 196Rule CA 1962 1966 - Oct lastSun 2:00 0 S 197# Zone NAME GMTOFF RULES FORMAT [UNTIL] 198Zone America/Los_Angeles -7:52:58 - LMT 1883 Nov 18 12:00 199 -8:00 US P%sT 1946 200 -8:00 CA P%sT 1967 201 -8:00 US P%sT 202# ZONE-DESCR America Los_Angeles United_States Pacific time 203 204# Alaska 205# AK%sT is the modern abbreviation for -9:00 per USNO. 206# 207# From Paul Eggert (1995-12-19): 208# Howse writes that Alaska switched from the Julian to the Gregorian calendar, 209# and from east-of-GMT to west-of-GMT days, in 1867 when the US purchased it 210# from Russia. We omit this transition, since we can't represent changes 211# from Julian to Gregorian. 212# 213# Zone NAME GMTOFF RULES FORMAT [UNTIL] 214Zone America/Juneau -8:57:41 - LMT 1900 Aug 20 12:00 215 -8:00 - PST 1942 216 -8:00 US P%sT 1946 217 -8:00 - PST 1969 218 -8:00 US P%sT 1983 Oct 30 2:00 219 -9:00 US AK%sT 220Zone America/Yakutat -9:18:55 - LMT 1900 Aug 20 12:00 221 -9:00 - YST 1942 222 -9:00 US Y%sT 1946 223 -9:00 - YST 1969 224 -9:00 US Y%sT 1983 Oct 30 2:00 225 -9:00 US AK%sT 226Zone America/Anchorage -9:59:36 - LMT 1900 Aug 20 12:00 227 -10:00 - CAT 1942 228 -10:00 US CAT/CAWT 1946 229 -10:00 - CAT 1967 Apr 230 -10:00 - AHST 1969 231 -10:00 US AH%sT 1983 Oct 30 2:00 232 -9:00 US AK%sT 233Zone America/Nome -11:01:38 - LMT 1900 Aug 20 12:00 234 -11:00 - NST 1942 235 -11:00 US N%sT 1946 236 -11:00 - NST 1967 Apr 237 -11:00 - BST 1969 238 -11:00 US B%sT 1983 Oct 30 2:00 239 -9:00 US AK%sT 240Zone America/Adak -11:46:38 - LMT 1900 Aug 20 12:00 241 -11:00 - NST 1942 242 -11:00 US N%sT 1946 243 -11:00 - NST 1967 Apr 244 -11:00 - BST 1969 245 -11:00 US B%sT 1983 Oct 30 2:00 246 -10:00 US HA%sT 247# Shanks writes that part of southwest Alaska (e.g. Aniak) 248# switched from -11:00 to -10:00 on 1968-09-22 at 02:00, 249# and another part (e.g. Akiak) made the same switch five weeks later. 250# These switches don't quite make our 1970 cutoff. 251 252# ZONE-DESCR America Juneau United_States Alaska: Juneau 253# ZONE-DESCR America Yakutat United_States Alaska: Yakutat 254# ZONE-DESCR America Anchorage United_States Alaska: Anchorage 255# ZONE-DESCR America Nome United_States Alaska: Nome 256# ZONE-DESCR America Adak United_States Alaska: Aleutian Islands 257 258# Hawaii 259# 260# From Arthur David Olson: 261# And then there's Hawaii. 262# DST was observed for one day in 1933; 263# standard time was changed by half an hour in 1947; 264# it's always standard as of 1986. 265# 266# From Paul Eggert: 267# Shanks says the 1933 experiment lasted for three weeks. Go with Shanks. 268# 269Zone Pacific/Honolulu -10:31:26 - LMT 1900 Jan 1 12:00 270 -10:30 - HST 1933 Apr 30 2:00 271 -10:30 1:00 HDT 1933 May 21 2:00 272 -10:30 US H%sT 1947 Jun 8 2:00 273 -10:00 - HST 274 275Zone Pacific/Midway -11:49:28 - LMT 1901 276 -11:00 - NST 1967 Apr # N=Nome 277 -11:00 - BST 1983 Nov 30 # B=Bering 278 -11:00 - SST # S=Samoa 279 280# ZONE-DESCR Pacific Honolulu United_States Hawaii 281# ZONE-DESCR Pacific Midway United_States Midway Island 282 283# Now we turn to US areas that have diverged from the consensus since 1970. 284 285# Arizona mostly uses MST. 286Zone America/Phoenix -7:28:18 - LMT 1883 Nov 18 12:00 287 -7:00 US M%sT 1944 Jan 1 00:01 288 -7:00 - MST 1944 Mar 17 00:01 289 -7:00 US M%sT 1944 Oct 1 00:01 290 -7:00 - MST 1967 291 -7:00 US M%sT 1968 292 -7:00 - MST 293 294# ZONE-DESCR America Phoenix United_States Arizona (except Navajo Nation) 295 296# From Arthur David Olson (February 13, 1988): 297# A writer from the Inter Tribal Council of Arizona, Inc., 298# notes in private correspondence dated 12/28/87 that "Presently, only the 299# Navajo Nation participates in the Daylight Saving Time policy, due to its 300# large size and location in three states." (The "only" means that other 301# tribal nations don't use DST.) 302 303Link America/Denver America/Shiprock 304 305# Southern Idaho and eastern Oregon switched four weeks late in 1974. 306# Zone NAME GMTOFF RULES FORMAT [UNTIL] 307Zone America/Boise -7:44:49 - LMT 1883 Nov 18 12:00 308 -8:00 US P%sT 1923 May 13 2:00 309 -7:00 US M%sT 1974 310 -7:00 - MST 1974 Feb 3 2:00 311 -7:00 US M%sT 312 313# ZONE-DESCR America Boise United_States Southern Idaho and Eastern Oregon 314 315# Indiana 316# 317# From Paul Eggert (1995-12-19): 318# Indiana generally observes either EST all year, or CST/CDT, 319# but areas near Cincinnati and Louisville use those cities' timekeeping 320# and in 1969 and 1970 the whole state observed daylight time; 321# and there are other exceptions as noted below. 322# Shanks partitions Indiana into 345 regions, each with its own time history, 323# and writes ``Even newspaper reports present contradictory information.'' 324# Fortunately, most of the complexity occurred before our cutoff date of 1970. 325# 326# Since 1970, EST-only Indiana has been like America/Indianapolis, 327# with exceptions noted below for Crawford, Starke, and Switzerland counties. 328# The parts of Indiana not listed below have been like America/Chicago, 329# America/Louisville, or America/New_York. 330# 331# Other than Indianapolis, the Indiana place names are so nondescript 332# that they would be ambiguous if we left them at the `America' level. 333# So we reluctantly put them all in a subdirectory `America/Indiana'. 334# 335# Most of EST-only Indiana last observed DST in 1970. 336# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER 337Rule Indianapolis 1941 only - Jun 22 2:00 1:00 D 338Rule Indianapolis 1941 1954 - Sep lastSun 2:00 0 S 339Rule Indianapolis 1946 1954 - Apr lastSun 2:00 1:00 D 340# Zone NAME GMTOFF RULES FORMAT [UNTIL] 341Zone America/Indianapolis -5:44:38 - LMT 1883 Nov 18 12:00 342 -6:00 US C%sT 1920 343 -6:00 Indianapolis C%sT 1942 344 -6:00 US C%sT 1946 345 -6:00 Indianapolis C%sT 1955 Apr 24 2:00 346 -5:00 - EST 1957 Sep 29 2:00 347 -6:00 - CST 1958 Apr 27 2:00 348 -5:00 - EST 1969 349 -5:00 US E%sT 1971 350 -5:00 - EST 351Link America/Indianapolis America/Indiana/Indianapolis 352 353# ZONE-DESCR America Indianapolis United_States Indiana: Indianapolis 354 355# 356# Part of Crawford County, Indiana, last observed DST in 1975, 357# and left its clocks alone in 1974. 358# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER 359Rule Marengo 1951 only - Apr lastSun 2:00 1:00 D 360Rule Marengo 1951 only - Sep lastSun 2:00 0 S 361Rule Marengo 1954 1960 - Apr lastSun 2:00 1:00 D 362Rule Marengo 1954 1960 - Sep lastSun 2:00 0 S 363# Zone NAME GMTOFF RULES FORMAT [UNTIL] 364Zone America/Indiana/Marengo -5:45:23 - LMT 1883 Nov 18 12:00 365 -6:00 US C%sT 1951 366 -6:00 Marengo C%sT 1961 Apr 30 2:00 367 -5:00 - EST 1969 368 -5:00 US E%sT 1974 Jan 6 2:00 369 -6:00 1:00 CDT 1974 Oct 27 2:00 370 -5:00 US E%sT 1976 371 -5:00 - EST 372 373# sorry, tzsetup needs two-level names 374Link America/Indiana/Marengo America/Marengo_IN 375# ZONE-DESCR America Marengo_IN United_States Indiana: Crawford County 376 377# 378# Starke County, Indiana 379# From Arthur David Olson (October 28, 1991): 380# An article on page A3 of the Sunday, October 27, 1991 Washington Post 381# notes that Starke County switched from Central time to Eastern time as of 382# October 27, 1991. 383# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER 384Rule Starke 1947 1961 - Apr lastSun 2:00 1:00 D 385Rule Starke 1947 1954 - Sep lastSun 2:00 0 S 386Rule Starke 1955 1956 - Oct lastSun 2:00 0 S 387Rule Starke 1957 1958 - Sep lastSun 2:00 0 S 388Rule Starke 1959 1961 - Oct lastSun 2:00 0 S 389# Zone NAME GMTOFF RULES FORMAT [UNTIL] 390Zone America/Indiana/Knox -5:46:30 - LMT 1883 Nov 18 12:00 391 -6:00 US C%sT 1947 392 -6:00 Starke C%sT 1962 Apr 29 2:00 393 -5:00 - EST 1963 Oct 27 2:00 394 -6:00 US C%sT 1991 Oct 27 2:00 395 -5:00 - EST 396 397Link America/Indiana/Knox America/Knox_IN 398# ZONE-DESCR America Knox_IN United_States Indiana: Starke County 399 400# 401# Switzerland County, Indiana, last observed DST in 1972. 402# Zone NAME GMTOFF RULES FORMAT [UNTIL] 403Zone America/Indiana/Vevay -5:40:16 - LMT 1883 Nov 18 12:00 404 -6:00 US C%sT 1954 Apr 25 2:00 405 -5:00 - EST 1969 406 -5:00 US E%sT 1973 407 -5:00 - EST 408 409Link America/Indiana/Vevay America/Vevay_IN 410# ZONE-DESCR America Vevay_IN United_States Indiana: Switzerland County 411 412# Part of Kentucky left its clocks alone in 1974. 413# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER 414Rule Louisville 1921 only - May 1 2:00 1:00 D 415Rule Louisville 1921 only - Sep 1 2:00 0 S 416Rule Louisville 1941 1961 - Apr lastSun 2:00 1:00 D 417Rule Louisville 1941 only - Sep lastSun 2:00 0 S 418Rule Louisville 1946 only - Jun 2 2:00 0 S 419Rule Louisville 1950 1955 - Sep lastSun 2:00 0 S 420Rule Louisville 1956 1960 - Oct lastSun 2:00 0 S 421# Zone NAME GMTOFF RULES FORMAT [UNTIL] 422Zone America/Louisville -5:43:02 - LMT 1883 Nov 18 12:00 423 -6:00 US C%sT 1921 424 -6:00 Louisville C%sT 1942 425 -6:00 US C%sT 1946 426 -6:00 Louisville C%sT 1961 Jul 23 2:00 427 -5:00 - EST 1968 428 -5:00 US E%sT 1974 Jan 6 2:00 429 -6:00 1:00 CDT 1974 Oct 27 2:00 430 -5:00 US E%sT 431 432# ZONE-DESCR America Louisville United_States Kentucky: Louisville area 433 434# Michigan 435# 436# From Bob Devine (January 28, 1988): 437# Michigan didn't observe DST from 1968 to 1973. 438# 439# From Paul Eggert (1995-12-19): 440# Shanks writes that Michigan started using standard time on 1885 Sep 18, 441# but Howse (p 126) writes that Detroit kept 442# 443# local time until 1900 when the City Council decreed that clocks should 444# be put back twenty-eight minutes to Central Standard Time. Half the 445# city obeyed, half refused. After considerable debate, the decision 446# was rescinded and the city reverted to Sun time. A derisive offer to 447# erect a sundial in front of the city hall was referred to the 448# Committee on Sewers. Then, in 1905, Central time was adopted 449# by city vote. 450# 451# This story is too entertaining to be false, so go with Howse over Shanks. 452# 453# Most of Michigan observed DST from 1973 on, but was a bit late in 1975. 454# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER 455Rule Detroit 1948 only - Apr lastSun 2:00 1:00 D 456Rule Detroit 1948 only - Sep lastSun 2:00 0 S 457Rule Detroit 1967 only - Jun 14 2:00 1:00 D 458Rule Detroit 1967 only - Oct lastSun 2:00 0 S 459# Zone NAME GMTOFF RULES FORMAT [UNTIL] 460Zone America/Detroit -5:32:11 - LMT 1905 461 -6:00 - CST 1915 May 15 2:00 462 -5:00 - EST 1942 463 -5:00 US E%sT 1946 464 -5:00 Detroit E%sT 1973 465 -5:00 US E%sT 1975 466 -5:00 - EST 1975 Apr 27 2:00 467 -5:00 US E%sT 468 469# ZONE-DESCR America Detroit United_States Michigan: Mainland 470 471# 472# The Michigan border with Wisconsin switched from EST to CST/CDT in 1973. 473# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER 474Rule Menominee 1946 only - Apr lastSun 2:00 1:00 D 475Rule Menominee 1946 only - Sep lastSun 2:00 0 S 476Rule Menominee 1966 only - Apr lastSun 2:00 1:00 D 477Rule Menominee 1966 only - Oct lastSun 2:00 0 S 478# Zone NAME GMTOFF RULES FORMAT [UNTIL] 479Zone America/Menominee -5:50:27 - LMT 1885 Sep 18 12:00 480 -6:00 US C%sT 1946 481 -6:00 Menominee C%sT 1969 Apr 27 2:00 482 -5:00 - EST 1973 Apr 29 2:00 483 -6:00 US C%sT 484 485# ZONE-DESCR America Menominee United_States Michigan: Upper Peninsula 486 487# Navassa 488# uninhabited 489 490# Navassa 491# no information; probably like US/Eastern 492 493################################################################################ 494 495 496# From Paul Eggert <eggert@twinsun.com> (November 18, 1993): 497# A good source for time zone historical data outside the US is 498# Thomas G. Shanks, The International Atlas (3rd edition), 499# San Diego: ACS Publications, Inc. (1991). 500# Except where otherwise noted, it is the source for the data below. 501# 502# Another source occasionally used is Edward W. Whitman, World Time Differences, 503# Whitman Publishing Co, 2 Niagara Av, Ealing, London (undated), which 504# I found in the UCLA library. 505# 506# I invented the abbreviation SPST for St Pierre Standard Time; SPDT likewise. 507# Corrections are welcome! 508# 509# See the `europe' file for Greenland. 510# 511# See the `africa' file for Zone naming conventions. 512 513# Canada 514 515# From Alain LaBont<e'> <ALB@immedia.ca> (1994-11-14): 516# I post here the time zone abbreviations standardized in Canada 517# for both English and French in the CAN/CSA-Z234.4-89 standard.... 518# 519# UTC Standard time Daylight savings time 520# offset French English French English 521# -2:30 - - HAT NDT 522# -3 - - HAA ADT 523# -3:30 HNT NST - - 524# -4 HNA AST HAE EDT 525# -5 HNE EST HAC CDT 526# -6 HNC CST HAR MDT 527# -7 HNR MST HAP PDT 528# -8 HNP PST HAY YDT 529# -9 HNY YST - - 530# 531# HN: Heure Normale ST: Standard Time 532# HA: Heure Avanc<e'>e DT: Daylight saving Time 533# 534# A: de l'Atlantique Atlantic 535# C: du Centre Central 536# E: de l'Est Eastern 537# M: Mountain 538# N: Newfoundland 539# P: du Pacifique Pacific 540# R: des Rocheuses 541# T: de Terre-Neuve 542# Y: du Yukon Yukon 543# 544# From Paul Eggert <eggert@twinsun.com> (1994-11-22): 545# Alas, this sort of thing must be handled by localization software. 546 547# The data for Canada are all from Shanks (1991). 548 549 550# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 551Rule Canada 1918 only - Apr 14 2:00 1:00 D 552Rule Canada 1918 only - Oct 31 2:00 0 S 553Rule Canada 1942 only - Feb 9 2:00 1:00 D 554Rule Canada 1945 only - Sep 30 2:00 0 S 555Rule Canada 1974 1986 - Apr lastSun 2:00 1:00 D 556Rule Canada 1974 max - Oct lastSun 2:00 0 S 557Rule Canada 1987 max - Apr Sun>=1 2:00 1:00 D 558 559 560# Newfoundland 561 562# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 563Rule StJohns 1917 1918 - Apr Sun>=8 2:00 1:00 D 564Rule StJohns 1917 only - Sep 17 2:00 0 S 565Rule StJohns 1918 only - Oct 31 2:00 0 S 566# Whitman gives 1919 Apr 5 and 1920 Apr 5; go with Shanks. 567Rule StJohns 1919 only - May 5 23:00 1:00 D 568Rule StJohns 1919 only - Aug 12 23:00 0 S 569# For 1931-1935 Whitman gives Apr same date; go with Shanks. 570Rule StJohns 1920 1935 - May Sun>=1 23:00 1:00 D 571Rule StJohns 1920 1935 - Oct lastSun 23:00 0 S 572# For 1936-1941 Shanks gives May Mon>=9 and Oct Mon>=2; go with Whitman. 573Rule StJohns 1936 1941 - May Sun>=8 0:00 1:00 D 574Rule StJohns 1936 1941 - Oct Sun>=1 0:00 0 S 575# Shanks gives 1942 May 11 - 1945 Sep 30; go with Whitman. 576Rule StJohns 1942 only - Mar 1 0:00 1:00 D 577Rule StJohns 1942 only - Dec 31 0:00 0 S 578Rule StJohns 1943 only - May 30 0:00 1:00 D 579Rule StJohns 1943 only - Sep 5 0:00 0 S 580Rule StJohns 1944 only - Jul 10 0:00 1:00 D 581Rule StJohns 1944 only - Sep 2 0:00 0 S 582Rule StJohns 1945 only - Jan 1 0:00 1:00 D 583Rule StJohns 1945 only - Oct 7 2:00 0 S 584# For 1946-9 Whitman gives May 5,4,9,1 - Oct 1,5,3,2, and for 1950 he gives 585# Apr 30 - Sep 24; go with Shanks. 586Rule StJohns 1946 1950 - May Sun>=8 2:00 1:00 D 587Rule StJohns 1946 1950 - Oct Sun>=2 2:00 0 S 588Rule StJohns 1951 1986 - Apr lastSun 2:00 1:00 D 589Rule StJohns 1951 1959 - Sep lastSun 2:00 0 S 590Rule StJohns 1960 max - Oct lastSun 2:00 0 S 591Rule StJohns 1987 only - Apr Sun>=1 2:00 1:00 D 592Rule StJohns 1988 only - Apr Sun>=1 2:00 2:00 DD 593Rule StJohns 1989 max - Apr Sun>=1 2:00 1:00 D 594# St John's has an apostrophe, but Posix file names can't have apostrophes. 595# Zone NAME GMTOFF RULES FORMAT [UNTIL] 596Zone America/St_Johns -3:30:52 - LMT 1884 597 -3:31 StJohns N%sT 1935 Mar 30 598 -3:30 StJohns N%sT 599 600# ZONE-DESCR America St_Johns Canada Newfoundland 601 602# Labrador, New Brunswick, Nova Scotia, Prince Edward I 603 604# From Paul Eggert (1996-06-12): 605# Shanks writes that since 1970 most of this region has been like Halifax. 606# Many locales did not observe peacetime DST until 1972; 607# Glace Bay, NS is the largest that we know of. 608# Shanks also writes that Liverpool, NS was the only town in Canada to observe 609# DST in 1971 but not 1970; for now we'll assume this is a typo. 610 611# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 612Rule Halifax 1916 only - Apr 1 0:00 1:00 D 613Rule Halifax 1916 only - Oct 1 0:00 0 S 614Rule Halifax 1918 only - Apr 14 2:00 1:00 D 615Rule Halifax 1918 only - Oct 31 2:00 0 S 616Rule Halifax 1920 only - May 9 0:00 1:00 D 617Rule Halifax 1920 only - Aug 29 0:00 0 S 618Rule Halifax 1921 only - May 6 0:00 1:00 D 619Rule Halifax 1921 1922 - Sep 5 0:00 0 S 620Rule Halifax 1922 only - Apr 30 0:00 1:00 D 621Rule Halifax 1923 1925 - May Sun>=1 0:00 1:00 D 622Rule Halifax 1923 only - Sep 4 0:00 0 S 623Rule Halifax 1924 only - Sep 15 0:00 0 S 624Rule Halifax 1925 only - Sep 28 0:00 0 S 625Rule Halifax 1926 only - May 16 0:00 1:00 D 626Rule Halifax 1926 only - Sep 13 0:00 0 S 627Rule Halifax 1927 only - May 1 0:00 1:00 D 628Rule Halifax 1927 only - Sep 26 0:00 0 S 629Rule Halifax 1928 1931 - May Sun>=8 0:00 1:00 D 630Rule Halifax 1928 only - Sep 9 0:00 0 S 631Rule Halifax 1929 only - Sep 3 0:00 0 S 632Rule Halifax 1930 only - Sep 15 0:00 0 S 633Rule Halifax 1931 1932 - Sep Mon>=24 0:00 0 S 634Rule Halifax 1933 only - Apr 30 0:00 1:00 D 635Rule Halifax 1933 only - Oct 2 0:00 0 S 636Rule Halifax 1934 only - May 20 0:00 1:00 D 637Rule Halifax 1934 only - Sep 16 0:00 0 S 638Rule Halifax 1935 only - Jun 2 0:00 1:00 D 639Rule Halifax 1935 only - Sep 30 0:00 0 S 640Rule Halifax 1936 only - Jun 1 0:00 1:00 D 641Rule Halifax 1936 only - Sep 14 0:00 0 S 642Rule Halifax 1937 1938 - May Sun>=1 0:00 1:00 D 643Rule Halifax 1937 1941 - Sep Mon>=24 0:00 0 S 644Rule Halifax 1939 only - May 28 0:00 1:00 D 645Rule Halifax 1940 1941 - May Sun>=1 0:00 1:00 D 646Rule Halifax 1942 only - Feb 9 2:00 1:00 D 647Rule Halifax 1945 1959 - Sep lastSun 2:00 0 S 648Rule Halifax 1946 1959 - Apr lastSun 2:00 1:00 D 649Rule Halifax 1962 1986 - Apr lastSun 2:00 1:00 D 650Rule Halifax 1962 max - Oct lastSun 2:00 0 S 651Rule Halifax 1987 max - Apr Sun>=1 2:00 1:00 D 652# Zone NAME GMTOFF RULES FORMAT [UNTIL] 653Zone America/Halifax -4:14:24 - LMT 1902 Jun 15 654 -4:00 Halifax A%sT 655Zone America/Glace_Bay -3:59:48 - LMT 1902 Jun 15 656 -4:00 Canada A%sT 1953 657 -4:00 Halifax A%sT 1954 658 -4:00 - AST 1972 659 -4:00 Halifax A%sT 660 661# ZONE-DESCR America Halifax Canada Atlantic time 662# ZONE-DESCR America Glace_Bay Canada Glace Bay, N.S. 663 664# Ontario, Quebec 665 666# From Paul Eggert (1996-06-12): 667# Shanks writes that since 1970 most of this region has been like Montreal. 668# Thunder Bay skipped DST in 1973. 669# Many smaller locales did not observe peacetime DST until 1974; 670# Nipigon (EST) and Rainy River (CST) are the largest that we know of. 671# Far west Ontario is like Winnipeg; far east Quebec is like Halifax. 672 673# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 674Rule Mont 1917 only - Mar 25 2:00 1:00 D 675Rule Mont 1917 only - Apr 24 0:00 0 S 676Rule Mont 1918 only - Apr 14 2:00 1:00 D 677Rule Mont 1918 only - Oct 31 2:00 0 S 678Rule Mont 1919 only - Mar 31 2:30 1:00 D 679Rule Mont 1919 only - Oct 25 2:30 0 S 680Rule Mont 1920 only - May 2 2:30 1:00 D 681Rule Mont 1920 only - Oct 3 2:30 0 S 682Rule Mont 1921 only - May 1 2:00 1:00 D 683Rule Mont 1921 only - Oct 2 2:30 0 S 684Rule Mont 1922 only - Apr 30 2:00 1:00 D 685Rule Mont 1922 only - Oct 1 2:30 0 S 686Rule Mont 1924 only - May 17 2:00 1:00 D 687Rule Mont 1924 1926 - Sep lastSun 2:30 0 S 688Rule Mont 1925 1926 - May Sun>=1 2:00 1:00 D 689Rule Mont 1927 only - May 1 0:00 1:00 D 690Rule Mont 1927 1932 - Sep Sun>=25 0:00 0 S 691Rule Mont 1928 1931 - Apr Sun>=25 0:00 1:00 D 692Rule Mont 1932 only - May 1 0:00 1:00 D 693Rule Mont 1933 1940 - Apr Sun>=24 0:00 1:00 D 694Rule Mont 1933 only - Oct 1 0:00 0 S 695Rule Mont 1934 1939 - Sep Sun>=24 0:00 0 S 696Rule Mont 1945 1948 - Sep lastSun 2:00 0 S 697Rule Mont 1946 1986 - Apr lastSun 2:00 1:00 D 698Rule Mont 1949 1950 - Oct lastSun 2:00 0 S 699Rule Mont 1951 1956 - Sep lastSun 2:00 0 S 700Rule Mont 1957 max - Oct lastSun 2:00 0 S 701Rule Mont 1987 max - Apr Sun>=1 2:00 1:00 D 702# Zone NAME GMTOFF RULES FORMAT [UNTIL] 703Zone America/Montreal -4:54:16 - LMT 1884 704 -5:00 Mont E%sT 705Zone America/Thunder_Bay -5:57:00 - LMT 1895 706 -5:00 Canada E%sT 1970 707 -5:00 Mont E%sT 1973 708 -5:00 - EST 1974 709 -5:00 Canada E%sT 710Zone America/Nipigon -5:53:04 - LMT 1895 711 -5:00 Canada E%sT 712Zone America/Rainy_River -6:17:56 - LMT 1895 713 -6:00 Canada C%sT 714 715# ZONE-DESCR America Montreal Canada Eastern time 716# ZONE-DESCR America Thunder_Bay Canada Thunder Bay, Ont. 717# ZONE-DESCR America Nipigon Canada Nipigon, Ont. 718# ZONE-DESCR America Rainy_River Canada Rainy River, Ont. 719 720# Manitoba 721# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 722Rule Winn 1916 only - Apr 23 0:00 1:00 D 723Rule Winn 1916 only - Sep 17 0:00 0 S 724Rule Winn 1918 only - Apr 14 2:00 1:00 D 725Rule Winn 1918 only - Oct 31 2:00 0 S 726Rule Winn 1937 only - May 16 2:00 1:00 D 727Rule Winn 1937 only - Sep 26 2:00 0 S 728Rule Winn 1942 only - Feb 9 2:00 1:00 D 729Rule Winn 1945 only - Sep lastSun 2:00 0 S 730Rule Winn 1946 only - May 12 2:00 1:00 D 731Rule Winn 1946 only - Oct 13 2:00 0 S 732Rule Winn 1947 1949 - Apr lastSun 2:00 1:00 D 733Rule Winn 1947 1949 - Sep lastSun 2:00 0 S 734Rule Winn 1950 only - May 1 2:00 1:00 D 735Rule Winn 1950 only - Sep 30 2:00 0 S 736Rule Winn 1951 1960 - Apr lastSun 2:00 1:00 D 737Rule Winn 1951 1958 - Sep lastSun 2:00 0 S 738Rule Winn 1959 only - Oct lastSun 2:00 0 S 739Rule Winn 1960 only - Sep lastSun 2:00 0 S 740Rule Winn 1963 only - Apr lastSun 2:00 1:00 D 741Rule Winn 1963 only - Sep 22 2:00 0 S 742Rule Winn 1966 1986 - Apr lastSun 2:00 1:00 D 743Rule Winn 1966 max - Oct lastSun 2:00 0 S 744Rule Winn 1987 max - Apr Sun>=1 2:00 1:00 D 745# Zone NAME GMTOFF RULES FORMAT [UNTIL] 746Zone America/Winnipeg -6:28:36 - LMT 1887 Jul 16 747 -6:00 Winn C%sT 748 749# ZONE-DESCR America Winnipeg Canada Manitoba 750 751# Saskatchewan 752 753# From Paul Eggert (1996-06-12): 754# Shanks writes that since 1970 most of this region has been like Regina. 755# Some western towns (e.g. Swift Current) switched from MST/MDT to CST in 1972. 756# Other western towns (e.g. Lloydminster) are like Edmonton. 757 758# From W. Jones <jones@skdad.usask.ca> (November 6, 1992): 759# The. . .below is based on information I got from our law library, the 760# provincial archives, and the provincial Community Services department. 761# A precise history would require digging through newspaper archives, and 762# since you didn't say what you wanted, I didn't bother. 763# 764# Saskatchewan is split by a time zone meridian (105W) and over the years 765# the boundary became pretty ragged as communities near it reevaluated 766# their affiliations in one direction or the other. In 1965 a provincial 767# referendum favoured legislating common time practices. 768# 769# On 15 April 1966 the Time Act (c. T-14, Revised Statutes of 770# Saskatchewan 1978) was proclaimed, and established that the eastern 771# part of Saskatchewan would use CST year round, that districts in 772# northwest Saskatchewan would by default follow CST but could opt to 773# follow Mountain Time rules (thus 1 hour difference in the winter and 774# zero in the summer), and that districts in southwest Saskatchewan would 775# by default follow MT but could opt to follow CST. 776# 777# It took a few years for the dust to settle (I know one story of a town 778# on one time zone having its school in another, such that a mom had to 779# serve her family lunch in two shifts), but presently it seems that only 780# a few towns on the border with Alberta (e.g. Lloydminster) follow MT 781# rules any more; all other districts appear to have used CST year round 782# since sometime in the 1960s. 783 784# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 785Rule Regina 1918 only - Apr 14 2:00 1:00 D 786Rule Regina 1918 only - Oct 31 2:00 0 S 787Rule Regina 1930 1934 - May Sun>=1 0:00 1:00 D 788Rule Regina 1930 1934 - Oct Sun>=1 0:00 0 S 789Rule Regina 1937 1941 - Apr Sun>=8 0:00 1:00 D 790Rule Regina 1937 only - Oct Sun>=8 0:00 0 S 791Rule Regina 1938 only - Oct Sun>=1 0:00 0 S 792Rule Regina 1939 1941 - Oct Sun>=8 0:00 0 S 793Rule Regina 1942 only - Feb 9 2:00 1:00 D 794Rule Regina 1945 only - Sep lastSun 2:00 0 S 795Rule Regina 1946 only - Apr Sun>=8 2:00 1:00 D 796Rule Regina 1946 only - Oct Sun>=8 2:00 0 S 797Rule Regina 1947 1959 - Apr lastSun 2:00 1:00 D 798Rule Regina 1947 1958 - Sep lastSun 2:00 0 S 799Rule Regina 1959 only - Oct lastSun 2:00 0 S 800# 801Rule Swift 1957 only - Apr lastSun 2:00 1:00 D 802Rule Swift 1957 only - Oct lastSun 2:00 0 S 803Rule Swift 1959 1961 - Apr lastSun 2:00 1:00 D 804Rule Swift 1959 only - Oct lastSun 2:00 0 S 805Rule Swift 1960 1961 - Sep lastSun 2:00 0 S 806# Zone NAME GMTOFF RULES FORMAT [UNTIL] 807Zone America/Regina -6:58:36 - LMT 1905 Sep 808 -7:00 Regina M%sT 1960 Apr lastSun 2:00 809 -6:00 - CST 810Zone America/Swift_Current -7:11:20 - LMT 1905 Sep 811 -7:00 Canada M%sT 1946 Apr lastSun 2:00 812 -7:00 Regina M%sT 1950 813 -7:00 Swift M%sT 1972 Apr lastSun 2:00 814 -6:00 - CST 815 816# ZONE-DESCR America Regina Canada Saskatchewan (except Swift Current) 817# ZONE-DESCR America Swift_Current Canada Swift current, Sask. 818 819# Alberta 820 821# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 822Rule Edm 1918 1919 - Apr Sun>=8 2:00 1:00 D 823Rule Edm 1918 only - Oct 31 2:00 0 S 824Rule Edm 1919 only - May 27 2:00 0 S 825Rule Edm 1920 1923 - Apr lastSun 2:00 1:00 D 826Rule Edm 1920 only - Oct lastSun 2:00 0 S 827Rule Edm 1921 1923 - Sep lastSun 2:00 0 S 828Rule Edm 1942 only - Feb 9 2:00 1:00 D 829Rule Edm 1945 only - Sep lastSun 2:00 0 S 830Rule Edm 1947 only - Apr lastSun 2:00 1:00 D 831Rule Edm 1947 only - Sep lastSun 2:00 0 S 832Rule Edm 1967 only - Apr lastSun 2:00 1:00 D 833Rule Edm 1967 only - Oct lastSun 2:00 0 S 834Rule Edm 1969 only - Apr lastSun 2:00 1:00 D 835Rule Edm 1969 only - Oct lastSun 2:00 0 S 836Rule Edm 1972 1986 - Apr lastSun 2:00 1:00 D 837Rule Edm 1972 max - Oct lastSun 2:00 0 S 838Rule Edm 1987 max - Apr Sun>=1 2:00 1:00 D 839# Zone NAME GMTOFF RULES FORMAT [UNTIL] 840Zone America/Edmonton -7:33:52 - LMT 1906 Sep 841 -7:00 Edm M%sT 842 843# ZONE-DESCR America Edmonton Canada Alberta 844 845# British Columbia 846 847# From Paul Eggert (1996-06-12): 848# Shanks writes that since 1970 most of this region has been like Vancouver. 849# Dawswon Creek uses MST. Much of east BC is like Edmonton. 850 851# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 852Rule Vanc 1918 only - Apr 14 2:00 1:00 D 853Rule Vanc 1918 only - Oct 31 2:00 0 S 854Rule Vanc 1942 only - Feb 9 2:00 1:00 D 855Rule Vanc 1945 only - Sep 30 2:00 0 S 856Rule Vanc 1946 1986 - Apr lastSun 2:00 1:00 D 857Rule Vanc 1946 only - Oct 13 2:00 0 S 858Rule Vanc 1947 1961 - Sep lastSun 2:00 0 S 859Rule Vanc 1962 max - Oct lastSun 2:00 0 S 860Rule Vanc 1987 max - Apr Sun>=1 2:00 1:00 D 861# Zone NAME GMTOFF RULES FORMAT [UNTIL] 862Zone America/Vancouver -8:12:28 - LMT 1884 863 -8:00 Vanc P%sT 864Zone America/Dawson_Creek -8:00:56 - LMT 1884 865 -8:00 Canada P%sT 1947 866 -8:00 Vanc P%sT 1972 Aug 30 2:00 867 -7:00 - MST 868 869# ZONE-DESCR America Vancouver Canada British Columbia (except Dawson Creek) 870# ZONE-DESCR America Dawson_Creek Canada Dawson creek, B.C. 871 872# Northwest Territories, Yukon 873 874# From Paul Eggert (1996-06-12): 875# Dawson switched to PST in 1973. Inuvik switched to MST in 1979. 876# Shanks's table for Watson Lake is corrupted, so we have no data there. 877 878# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 879Rule NT_YK 1918 only - Apr 14 2:00 1:00 D 880Rule NT_YK 1918 only - Oct 27 2:00 0 S 881Rule NT_YK 1919 only - May 25 2:00 1:00 D 882Rule NT_YK 1919 only - Nov 1 0:00 0 S 883Rule NT_YK 1942 only - Feb 9 2:00 1:00 D 884Rule NT_YK 1945 only - Sep 30 2:00 0 S 885# 0:00 ?? 886Rule NT_YK 1965 only - Apr lastSun 0:00 2:00 DD 887Rule NT_YK 1965 only - Oct lastSun 2:00 0 S 888Rule NT_YK 1980 1986 - Apr lastSun 2:00 1:00 D 889Rule NT_YK 1980 max - Oct lastSun 2:00 0 S 890Rule NT_YK 1987 max - Apr Sun>=1 2:00 1:00 D 891# Zone NAME GMTOFF RULES FORMAT [UNTIL] 892Zone America/Pangnirtung -4:22:56 - LMT 1884 893 -4:00 NT_YK A%sT 894Zone America/Iqaluit -4:33:52 - LMT 1884 # Frobisher Bay 895 -5:00 NT_YK E%sT 896Zone America/Rankin_Inlet -6:08:40 - LMT 1884 897 -6:00 NT_YK C%sT 898Zone America/Yellowknife -7:37:24 - LMT 1884 899 -7:00 NT_YK M%sT 900Zone America/Inuvik -8:54:00 - LMT 1884 901 -8:00 NT_YK P%sT 1979 Apr lastSun 2:00 902 -7:00 NT_YK M%sT 903Zone America/Whitehorse -9:00:12 - LMT 1900 Aug 20 904 -9:00 NT_YK Y%sT 1966 Jul 1 2:00 905 -8:00 NT_YK P%sT 906Zone America/Dawson -9:17:40 - LMT 1900 Aug 20 907 -9:00 NT_YK Y%sT 1973 Oct lastSun 2:00 908 -8:00 NT_YK P%sT 909 910# XXX - can somebody put territory names to all of these 911# ZONE-DESCR America Whitehorse Canada Whitehorse 912# ZONE-DESCR America Dawson Canada Dawson 913# ZONE-DESCR America Pangnirtung Canada Pangnirtung 914# ZONE-DESCR America Iqaluit Canada Iqaluit 915# ZONE-DESCR America Rankin_Inlet Canada Rankin_Inlet 916# ZONE-DESCR America Yellowknife Canada Yellowknife 917# ZONE-DESCR America Inuvik Canada Inuvik 918 919############################################################################### 920 921# Mexico 922 923# From Guy Harris: 924# Rules are from the Official Airline Guide, Worldwide Edition, for 1987. 925# Rules prior to 1987 are unknown. 926# The comments in the OAG say "Only Ensenada, Mexicale, San Felipe and Tijuana 927# observe DST." This is presumably Baja California Norte, above 28th parallel, 928# as listed there; [there is also] "Baja California Sur and N. Pacific 929# Coast (States of Sinaloa and Sonora)." 930 931# From Bob Devine (January 28, 1988): 932# The Federal District (where Mexico City is) has observed [DST] several 933# times but not recently. 934# 935# I don't where to drawn the line in the North Baja area. 28th latitude 936# sounds good -- but it may be higher (how far [d]o radio stations from 937# San Diego affect culture?). 938# 939# The dates of DST probably go back to 1981. The rules are the same as 940# US's. This is going to be a headache for US presidential electi[o]n years! 941 942# From Arthur David Olson (February 13, 1988) 943# Since the 1981 starting date is only "probable," we'll keep the 1987 944# starting date below. 945 946# From U. S. Naval Observatory (January 19, 1989): 947# MEXICO BAJA CAL N 7 H BEHIND UTC BAJA CALIFORNIA SUR AND 948# MEXICO BAJA CAL N N. PACIFIC COAST (STATES 949# MEXICO BAJA CAL N OF SINALOA AND SONORA) 950# MEXICO BAJA CAL N 8 H BEHIND UTC ABOVE 28TH PARALLAL APR 3 951# MEXICO BAJA CAL N - OCT 29 952# MEXICO BAJA CAL N 7 H BEHIND UTC ABOVE 28TH PARALLAL APR 3 953# MEXICO BAJA CAL N - 0CT 29 954# MEXICO 6 H BEHIND UTC STATES OF DURANGO, 955# MEXICO COAHUILA, NUEVO LEON, 956# MEXICO TAMAULIPAS 957# MEXICO 5 H BEHIND UTC STATES OF DURANGO, 958# MEXICO COAHUILA, NUEVO LEON, 959# MEXICO TAMAULIPAS APR 3 - OCT 29 960# MEXICO 6 H BEHIND UTC GENERAL MEXICO, STATES OF 961# MEXICO CAMPECHE, QUINTANA ROO AND 962# MEXICO YUCATAN 963 964# From Arthur David Olson (January 21, 1989): 965# April 3 fell on a Sunday in 1988; October 29 fell on a Sunday in 1989. Ahem. 966# USNO claims there should be four Mexican zones rather than three: 967# a zone that's GMT-8 with DST; a zone that's always GMT-7; 968# a zone that's GMT-6 with DST; and a zone that's always GMT-6. 969 970# From Paul Eggert <eggert@twinsun.com> (1993-11-18): 971# Shanks also says there are four zones, but disagrees about the fourth. 972# Instead of GMT-6 with DST, he says there's GMT-8 without DST. 973 974# From Alan Perry <alan.perry@eng.sun.com> (1996-02-15): 975# A guy from our Mexico subsidiary finally found the Presidential Decree 976# outlining the timezone changes in Mexico. 977# 978# ------------- Begin Forwarded Message ------------- 979# 980# I finally got my hands on the Official Presidential Decree that sets up the 981# rules for the DST changes. The rules are: 982# 983# 1. The country is divided in 3 timezones: 984# - Baja California Norte (the Mexico/BajaNorte TZ) 985# - Baja California Sur, Nayarit, Sinaloa and Sonora (the Mexico/BajaSur TZ) 986# - The rest of the country (the Mexico/General TZ) 987# 988# 2. From the first Sunday in April at 2:00 AM to the last Sunday in October 989# at 2:00 AM, the times in each zone are as follows: 990# BajaNorte: GMT+7 991# BajaSur: GMT+6 992# General: GMT+5 993# 994# 3. The rest of the year, the times are as follows: 995# BajaNorte: GMT+8 996# BajaSur: GMT+7 997# General: GMT+6 998# 999# The Decree was published in Mexico's Official Newspaper on January 4th. 1000# 1001# -------------- End Forwarded Message -------------- 1002# From Paul Eggert (1996-06-12): 1003# For an English translation of the decree, 1004# see ``Diario Oficial: Time Zone Changeover'', 1005# <URL:http://mexico-travel.com/extra/timezone_eng.html> (1996-01-04). 1006 1007# From Shanks (1991): 1008# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1009Rule Mexico 1939 only - Feb 5 0:00 1:00 D 1010Rule Mexico 1939 only - Jun 25 0:00 0 S 1011Rule Mexico 1940 only - Dec 9 0:00 1:00 D 1012Rule Mexico 1941 only - Apr 1 0:00 0 S 1013Rule Mexico 1943 only - Dec 16 0:00 1:00 D 1014Rule Mexico 1944 only - May 1 0:00 0 S 1015Rule Mexico 1950 only - Feb 12 0:00 1:00 D 1016Rule Mexico 1950 only - Jul 30 0:00 0 S 1017Rule Mexico 1996 max - Apr Sun>=1 2:00 1:00 D 1018Rule Mexico 1996 max - Oct lastSun 2:00 0 S 1019# 1020Rule BajaN 1950 1966 - Apr lastSun 2:00 1:00 D 1021Rule BajaN 1950 1961 - Sep lastSun 2:00 0 S 1022Rule BajaN 1961 1966 - Oct lastSun 2:00 0 S 1023# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1024Zone America/Mexico_City -6:36:36 - LMT 1922 Jan 1 0:23:24 1025 -7:00 - MST 1927 Jun 10 23:00 1026 -6:00 - CST 1930 Nov 15 1027 -7:00 - MST 1931 May 1 23:00 1028 -6:00 - CST 1931 Oct 1029 -7:00 - MST 1932 Mar 30 23:00 1030 -6:00 Mexico C%sT 1031# ZONE-DESCR America Mexico_City Mexico Mexico City 1032Zone America/Mazatlan -7:05:40 - LMT 1921 Dec 31 23:54:20 1033 -7:00 - MST 1927 Jun 10 23:00 1034 -6:00 - CST 1930 Nov 15 1035 -7:00 - MST 1931 May 1 23:00 1036 -6:00 - CST 1931 Oct 1037 -7:00 - MST 1932 Mar 30 23:00 1038 -6:00 - CST 1942 Apr 1039 -7:00 - MST 1949 Jan 14 1040 -8:00 - PST 1970 1041 -7:00 Mexico M%sT 1042# ZONE-DESCR America Mazatlan Mexico Mazatlan 1043Zone America/Tijuana -7:48:04 - LMT 1922 Jan 1 0:11:56 1044 -8:00 - PST 1927 Jun 10 23:00 1045 -7:00 - MST 1930 Nov 16 1046 -8:00 - PST 1942 Apr 1047 -7:00 - MST 1949 Jan 14 1048 -8:00 BajaN P%sT 1967 Apr lastSun 2:00 1049 -8:00 US P%sT 1996 1050 -8:00 Mexico P%sT 1051# ZONE-DESCR America Tijuana Mexico Baja California Norte 1052Zone America/Ensenada -7:46:28 - LMT 1922 Jan 1 0:13:32 1053 -8:00 - PST 1927 Jun 10 23:00 1054 -7:00 - MST 1930 Nov 16 1055 -8:00 - PST 1942 Apr 1056 -7:00 - MST 1949 Jan 14 1057 -8:00 - PST 1996 1058 -8:00 Mexico P%sT 1059# ZONE-DESCR America Ensenada Mexico Ensenada 1060 1061# 1062# Revillagigedo Is 1063# no information 1064 1065############################################################################### 1066 1067# Anguilla 1068# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1069Zone America/Anguilla -4:12:16 - LMT 1912 Mar 2 1070 -4:00 - AST 1071 1072# ZONE-DESCR America Anguilla Anguilla All points 1073 1074# Antigua and Barbuda 1075# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1076Zone America/Antigua -4:07:12 - LMT 1912 Mar 2 1077 -5:00 - EST 1951 1078 -4:00 - AST 1079 1080# ZONE-DESCR America Antigua Antigua All points 1081 1082# Bahamas 1083# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1084Rule Bahamas 1964 max - Oct lastSun 2:00 0 S 1085Rule Bahamas 1964 1986 - Apr lastSun 2:00 1:00 D 1086Rule Bahamas 1987 max - Apr Sun>=1 2:00 1:00 D 1087# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1088Zone America/Nassau -5:09:24 - LMT 1912 Mar 2 1089 -5:00 Bahamas E%sT 1090 1091# ZONE-DESCR America Nassau Bahamas All points 1092 1093# Barbados 1094# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1095Rule Barb 1977 only - Jun 12 2:00 1:00 D 1096Rule Barb 1977 1978 - Oct Sun>=1 2:00 0 S 1097Rule Barb 1978 1980 - Apr Sun>=15 2:00 1:00 D 1098Rule Barb 1979 only - Sep 30 2:00 0 S 1099Rule Barb 1980 only - Sep 25 2:00 0 S 1100# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1101Zone America/Barbados -3:58:28 - LMT 1924 # Bridgetown 1102 -3:58 - BMT 1932 # Bridgetown Mean Time 1103 -4:00 Barb A%sT 1104 1105# ZONE-DESCR America Barbados Barbados All points 1106 1107# Belize 1108# Whitman entirely disagrees with Shanks; go with Shanks. 1109# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1110Rule Belize 1918 1942 - Oct Sun>=2 0:00 0:30 HD 1111Rule Belize 1919 1943 - Feb Sun>=9 0:00 0 S 1112Rule Belize 1973 only - Dec 5 0:00 1:00 D 1113Rule Belize 1974 only - Feb 9 0:00 0 S 1114Rule Belize 1982 only - Dec 18 0:00 1:00 D 1115Rule Belize 1983 only - Feb 12 0:00 0 S 1116# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1117Zone America/Belize -5:52:48 - LMT 1912 Apr 1118 -6:00 Belize C%sT 1119 1120# ZONE-DESCR America Belize Belize All points 1121 1122# Bermuda 1123# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1124Zone Atlantic/Bermuda -4:19:04 - LMT 1930 Jan 1 2:00 # Hamilton 1125 -4:00 - AST 1974 Apr 28 2:00 1126 -4:00 Bahamas A%sT 1127 1128# ZONE-DESCR Atlantic Bermuda Bermuda All points 1129 1130# Cayman Is 1131# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1132Zone America/Cayman -5:25:32 - LMT 1890 # Georgetown 1133 -5:07 - KMT 1912 Feb # Kingston Mean Time 1134 -5:00 - EST 1135 1136# ZONE-DESCR America Cayman Cayman_Islands All points 1137 1138# Clipperton 1139# uninhabited 1140 1141# Costa Rica 1142# Shanks gives some very odd dates for 1991, and stops there. 1143# For now, we won't guess further. 1144# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1145Rule CR 1979 1980 - Feb lastSun 0:00 1:00 D 1146Rule CR 1979 1980 - Jun Sun>=1 0:00 0 S 1147Rule CR 1991 only - Jan 19 0:00 1:00 D 1148Rule CR 1991 only - Jul 1 0:00 0 S 1149# There are too many San Joses elsewhere, so we'll use `Costa Rica'. 1150# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1151Zone America/Costa_Rica -5:36:20 - LMT 1890 # San Jose 1152 -5:36 - SJMT 1921 Jan 15 # San Jose Mean Time 1153 -6:00 CR C%sT 1154# ZONE-DESCR America Costa_Rica Costa_Rica All points 1155 1156# Coco 1157# no information; probably like America/Costa_Rica 1158 1159# Cuba 1160 1161# From Bob Devine (January 28, 1988): 1162# . . .DST is from 2nd Sunday in May to 2nd Sunday in October since 1981. 1163# Change at midnight. In 1979 & 1980, started at 3rd Sunday in March 1164# (I think). 1165 1166# From U. S. Naval Observatory (January 19, 1989): 1167# CUBA 5 H BEHIND UTC 1168# CUBA 4 H BEHIND UTC MAR 20 - OCT 8 1169 1170# From Shanks (1991): 1171# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1172Rule Cuba 1928 only - Jun 10 0:00 1:00 D 1173Rule Cuba 1928 only - Oct 10 0:00 0 S 1174Rule Cuba 1940 1942 - Jun Sun>=1 0:00 1:00 D 1175Rule Cuba 1940 1942 - Sep Sun>=1 0:00 0 S 1176Rule Cuba 1945 1946 - Jun Sun>=1 0:00 1:00 D 1177Rule Cuba 1945 1946 - Sep Sun>=1 0:00 0 S 1178Rule Cuba 1965 only - Jun 1 0:00 1:00 D 1179Rule Cuba 1965 only - Sep 30 0:00 0 S 1180Rule Cuba 1966 only - May 29 0:00 1:00 D 1181Rule Cuba 1966 only - Oct 2 0:00 0 S 1182Rule Cuba 1967 only - Apr 8 0:00 1:00 D 1183Rule Cuba 1967 1968 - Sep Sun>=8 0:00 0 S 1184Rule Cuba 1968 only - Apr 14 0:00 1:00 D 1185Rule Cuba 1969 1977 - Apr lastSun 0:00 1:00 D 1186Rule Cuba 1969 1971 - Oct lastSun 0:00 0 S 1187Rule Cuba 1972 1974 - Oct 8 0:00 0 S 1188Rule Cuba 1975 1977 - Oct lastSun 0:00 0 S 1189Rule Cuba 1978 only - May 7 0:00 1:00 D 1190Rule Cuba 1978 1980 - Oct Sun>=8 0:00 0 S 1191Rule Cuba 1979 1980 - Mar Sun>=15 0:00 1:00 D 1192Rule Cuba 1981 1985 - May Sun>=5 0:00 1:00 D 1193Rule Cuba 1981 max - Oct Sun>=8 0:00 0 S 1194Rule Cuba 1986 1989 - Mar Sun>=14 0:00 1:00 D 1195Rule Cuba 1990 only - Apr 1 0:00 1:00 D 1196Rule Cuba 1991 max - Mar Sun>=14 0:00 1:00 D 1197 1198# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1199Zone America/Havana -5:29:28 - LMT 1890 1200 -5:30 - HMT 1925 Jul 19 12:00 # Havana MT 1201 -5:00 Cuba C%sT 1202 1203# ZONE-DESCR America Havana Cuba All points 1204 1205# Dominica 1206# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1207Zone America/Dominica -4:05:36 - LMT 1911 Jul 1 0:01 # Roseau 1208 -4:00 - AST 1209 1210# ZONE-DESCR America Dominica Dominica All points 1211 1212# Dominican Republic 1213# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1214Rule DR 1966 only - Oct 30 0:00 1:00 D 1215Rule DR 1967 only - Feb 28 0:00 0 S 1216Rule DR 1969 1973 - Oct lastSun 0:00 0:30 HD 1217Rule DR 1970 only - Feb 21 0:00 0 S 1218Rule DR 1971 only - Jan 20 0:00 0 S 1219Rule DR 1972 1974 - Jan 21 0:00 0 S 1220# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1221Zone America/Santo_Domingo -4:39:36 - LMT 1890 1222 -4:40 - SDMT 1933 Apr 1 12:00 # S. Dom. MT 1223 -5:00 DR E%sT 1974 Oct 27 1224 -4:00 - AST 1225 1226# ZONE-DESCR America Santo_Domingo Dominican_Republic All points 1227 1228# El Salvador 1229# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1230Rule Salv 1987 1988 - May Sun>=1 0:00 1:00 D 1231Rule Salv 1987 1988 - Sep lastSun 0:00 0 S 1232# There are too many San Salvadors elsewhere, so we'll use `El Salvador'. 1233# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1234Zone America/El_Salvador -5:56:48 - LMT 1921 # San Salvador 1235 -6:00 Salv C%sT 1236 1237# ZONE-DESCR America El_Salvador El_Salvador All points 1238 1239# Grenada 1240# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1241Zone America/Grenada -4:07:00 - LMT 1911 Jul 1242 -4:00 - AST 1243 1244# ZONE-DESCR America Grenada Grenada All points 1245 1246# Guadeloupe 1247# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1248Zone America/Guadeloupe -4:06:08 - LMT 1911 Jun 8 # Pointe a Pitre 1249 -4:00 - AST 1250 1251# ZONE-DESCR America Guadeloupe Guadeloupe All points 1252 1253# Guatemala 1254# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1255Rule Guat 1973 only - Nov 25 0:00 1:00 D 1256Rule Guat 1974 only - Feb 24 0:00 0 S 1257Rule Guat 1983 only - May 21 0:00 1:00 D 1258Rule Guat 1983 only - Sep 22 0:00 0 S 1259# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1260Zone America/Guatemala -6:02:04 - LMT 1918 Oct 5 1261 -6:00 Guat C%sT 1262 1263# ZONE-DESCR America Guatemala Guatemala All points 1264 1265# Haiti 1266# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1267Rule Haiti 1983 only - May 8 0:00 1:00 D 1268Rule Haiti 1984 1987 - Apr lastSun 0:00 1:00 D 1269Rule Haiti 1983 1987 - Oct lastSun 0:00 0 S 1270Rule Haiti 1988 max - Apr Sun>=1 2:00 1:00 D 1271Rule Haiti 1988 max - Oct lastSun 2:00 0 S 1272# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1273Zone America/Port-au-Prince -4:49:20 - LMT 1890 1274 -4:49 - PPMT 1917 Jan 24 12:00 # P-a-P MT 1275 -5:00 Haiti E%sT 1276 1277# ZONE-DESCR America Port-au-Prince Haiti All points 1278 1279# Honduras 1280# Shanks says 1921 Jan 1; go with Whitman's more precise Apr 1. 1281# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1282Zone America/Tegucigalpa -5:48:52 - LMT 1921 Apr 1283 -6:00 Salv C%sT 1284 1285# ZONE-DESCR America Tegucigalpa Honduras All points 1286 1287# Jamaica 1288 1289# From Bob Devine (January 28, 1988): 1290# Follows US rules. 1291 1292# From U. S. Naval Observatory (January 19, 1989): 1293# JAMAICA 5 H BEHIND UTC 1294 1295# From Shanks (1991): 1296# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1297Zone America/Jamaica -5:07:12 - LMT 1890 # Kingston 1298 -5:07 - KMT 1912 Feb # Kingston Mean Time 1299 -5:00 - EST 1974 Jan 6 2:00 1300 -5:00 US E%sT 1301 1302# ZONE-DESCR America Jamaica Jamaica All points 1303 1304# Martinique 1305# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1306Zone America/Martinique -4:04:20 - LMT 1890 # Fort-de-France 1307 -4:04 - FFMT 1911 May # Fort-de-France MT 1308 -4:00 - AST 1980 Apr 6 1309 -4:00 1:00 ADT 1980 Sep 28 1310 -4:00 - AST 1311 1312# ZONE-DESCR America Martinique Martinique All points 1313 1314# Montserrat 1315# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1316Zone America/Montserrat -4:08:52 - LMT 1911 Jul 1 0:01 # Plymouth 1317 -4:00 - AST 1318 1319# ZONE-DESCR America Montserrat Montserrat All points 1320 1321# Nicaragua 1322# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1323Rule Nic 1979 1980 - Mar Sun>=16 0:00 1:00 D 1324Rule Nic 1979 1980 - Jun Mon>=23 0:00 0 S 1325# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1326Zone America/Managua -5:45:08 - LMT 1890 1327 -5:45 - MMT 1934 Jun 23 # Managua Mean Time 1328 -6:00 - CST 1973 May 1329 -5:00 - EST 1975 Feb 16 1330 -6:00 Nic C%sT 1331 1332# ZONE-DESCR America Managua Nicaragua All points 1333 1334# Panama 1335# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1336Zone America/Panama -5:18:08 - LMT 1890 1337 -5:20 - PMT 1908 Apr 22 # Panama Mean Time 1338 -5:00 - EST 1339 1340# ZONE-DESCR America Panama Panama All points 1341 1342# Puerto Rico 1343# There are too many San Juans elsewhere, so we'll use `Puerto_Rico'. 1344# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1345Zone America/Puerto_Rico -4:24:25 - LMT 1899 Mar 28 12:00 # San Juan 1346 -4:00 - AST 1942 May 3 1347 -4:00 1:00 AWT 1945 Sep 30 2:00 1348 -4:00 - AST 1349 1350# ZONE-DESCR America Puerto_Rico United_States Puerto Rico 1351 1352# St Kitts-Nevis 1353# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1354Zone America/St_Kitts -4:10:52 - LMT 1912 Mar 2 # Basseterre 1355 -4:00 - AST 1356 1357# ZONE-DESCR America St_Kitts St_Kitts_and_Nevis All points 1358 1359# St Lucia 1360# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1361Zone America/St_Lucia -4:04:00 - LMT 1890 # Castries 1362 -4:04 - CMT 1912 # Castries Mean Time 1363 -4:00 - AST 1364 1365# ZONE-DESCR America St_Lucia St_Lucia All points 1366 1367# St Pierre and Miquelon 1368# There are too many St Pierres elsewhere, so we'll use `Miquelon'. 1369# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1370Zone America/Miquelon -3:44:40 - LMT 1911 May 15 # St Pierre 1371 -4:00 - AST 1980 May 1372 -3:00 Mont SP%sT 1373 1374# ZONE-DESCR America Miquelon France St. Pierre and Miquelon 1375 1376# St Vincent and the Grenadines 1377# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1378Zone America/St_Vincent -4:04:56 - LMT 1890 # Kingstown 1379 -4:05 - KMT 1912 # Kingstown Mean Time 1380 -4:00 - AST 1381 1382# ZONE-DESCR America St_Vincent St_Vincent All points 1383 1384# Turks and Caicos 1385# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1386Zone America/Grand_Turk -4:44:32 - LMT 1890 1387 -5:07 - KMT 1912 Feb # Kingston Mean Time 1388 -5:00 - EST 1979 Apr 29 2:00 1389 -5:00 US E%sT 1390# ZONE-DESCR America Grand_Turk Turks_and_Caicos All points 1391 1392# British Virgin Is 1393# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1394Zone America/Tortola -4:18:28 - LMT 1911 Jul # Road Town 1395 -4:00 - AST 1396 1397# ZONE-DESCR America Tortola United_Kingdom British Virgin Islands 1398 1399# Virgin Is 1400# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1401Zone America/St_Thomas -4:19:44 - LMT 1911 Jul # Charlotte Amalie 1402 -4:00 - AST 1403 1404# ZONE-DESCR America St_Thomas United_States Virgin Islands 1405