1# @(#)northamerica 7.69 |
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> (1999-03-22): 9# A reliable and entertaining source about time zones is --- 178 unchanged lines hidden (view full) --- 188# central standard time 189# mountain standard time 190# Pacific standard time 191# Alaska standard time 192# Hawaii-Aleutian standard time 193# Samoa standard time 194# The law doesn't give abbreviations. 195# |
196# From Paul Eggert (2000-01-08), following a heads-up from Rives McDow: 197# Public law 106-564 (2000-12-23) introduced the abbreviation 198# "Chamorro Standard Time" for time in Guam and the Northern Marianas. 199# See the file "australasia". 200 201 202# US eastern time, represented by New York 203 --- 15 unchanged lines hidden (view full) --- 219 -5:00 US E%sT 1920 220 -5:00 NYC E%sT 1942 221 -5:00 US E%sT 1946 222 -5:00 NYC E%sT 1967 223 -5:00 US E%sT 224 225# US central time, represented by Chicago 226 |
227# Alabama, Arkansas, Florida panhandle (Bay, Calhoun, Escambia, 228# Gulf, Holmes, Jackson, Okaloosa, Santa Rosa, Walton, and 229# Washington counties), Illinois, western Indiana |
230# (Gibson, Jasper, Lake, LaPorte, Newton, Porter, Posey, Spencer, 231# Vanderburgh, and Warrick counties), Iowa, most of Kansas, western 232# Kentucky, Louisiana, Minnesota, Mississippi, Missouri, eastern 233# Nebraska, eastern North Dakota, Oklahoma, eastern South Dakota, 234# western Tennessee, most of Texas, Wisconsin 235 236# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER 237Rule Chicago 1920 only - Jun 13 2:00 1:00 D --- 13 unchanged lines hidden (view full) --- 251 -6:00 US C%sT 252# Oliver County, ND switched from mountain to central time on 1992-10-25. 253Zone America/North_Dakota/Center -6:45:12 - LMT 1883 Nov 18 12:00 254 -7:00 US M%sT 1992 Oct 25 02:00 255 -6:00 US C%sT 256 257# US mountain time, represented by Denver 258# |
259# Colorado, far western Kansas, Montana, western |
260# Nebraska, Nevada border (Jackpot, Owyhee, and Mountain City), 261# New Mexico, southwestern North Dakota, far eastern Oregon, 262# western South Dakota, far western Texas (El Paso County, Hudspeth County, 263# and Pine Springs and Nickel Creek in Culberson County), Utah, Wyoming 264# 265# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER 266Rule Denver 1920 1921 - Mar lastSun 2:00 1:00 D 267Rule Denver 1920 only - Oct lastSun 2:00 0 S --- 5 unchanged lines hidden (view full) --- 273 -7:00 US M%sT 1920 274 -7:00 Denver M%sT 1942 275 -7:00 US M%sT 1946 276 -7:00 Denver M%sT 1967 277 -7:00 US M%sT 278 279# US Pacific time, represented by Los Angeles 280# |
281# California, northern Idaho (Benewah, Bonner, Boundary, Clearwater, 282# Idaho, Kootenai, Latah, Lewis, Nez Perce, and Shoshone counties), 283# most of Nevada, most of Oregon, and Washington |
284# 285# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER 286Rule CA 1948 only - Mar 14 2:00 1:00 D 287Rule CA 1949 only - Jan 1 2:00 0 S 288Rule CA 1950 1966 - Apr lastSun 2:00 1:00 D 289Rule CA 1950 1961 - Sep lastSun 2:00 0 S 290Rule CA 1962 1966 - Oct lastSun 2:00 0 S 291# Zone NAME GMTOFF RULES FORMAT [UNTIL] --- 22 unchanged lines hidden (view full) --- 314# 315# Zone NAME GMTOFF RULES FORMAT [UNTIL] 316Zone America/Juneau 15:02:19 - LMT 1867 Oct 18 317 -8:57:41 - LMT 1900 Aug 20 12:00 318 -8:00 - PST 1942 319 -8:00 US P%sT 1946 320 -8:00 - PST 1969 321 -8:00 US P%sT 1983 Oct 30 2:00 |
322 -9:00 US Y%sT 1983 Nov 30 |
323 -9:00 US AK%sT 324Zone America/Yakutat 14:41:05 - LMT 1867 Oct 18 325 -9:18:55 - LMT 1900 Aug 20 12:00 326 -9:00 - YST 1942 327 -9:00 US Y%sT 1946 328 -9:00 - YST 1969 |
329 -9:00 US Y%sT 1983 Nov 30 |
330 -9:00 US AK%sT 331Zone America/Anchorage 14:00:24 - LMT 1867 Oct 18 332 -9:59:36 - LMT 1900 Aug 20 12:00 333 -10:00 - CAT 1942 334 -10:00 US CAT/CAWT 1946 335 -10:00 - CAT 1967 Apr 336 -10:00 - AHST 1969 337 -10:00 US AH%sT 1983 Oct 30 2:00 |
338 -9:00 US Y%sT 1983 Nov 30 |
339 -9:00 US AK%sT 340Zone America/Nome 12:58:21 - LMT 1867 Oct 18 341 -11:01:38 - LMT 1900 Aug 20 12:00 342 -11:00 - NST 1942 343 -11:00 US N%sT 1946 344 -11:00 - NST 1967 Apr 345 -11:00 - BST 1969 346 -11:00 US B%sT 1983 Oct 30 2:00 |
347 -9:00 US Y%sT 1983 Nov 30 |
348 -9:00 US AK%sT 349Zone America/Adak 12:13:21 - LMT 1867 Oct 18 350 -11:46:38 - LMT 1900 Aug 20 12:00 351 -11:00 - NST 1942 352 -11:00 US N%sT 1946 353 -11:00 - NST 1967 Apr 354 -11:00 - BST 1969 355 -11:00 US B%sT 1983 Oct 30 2:00 |
356 -10:00 US AH%sT 1983 Nov 30 |
357 -10:00 US HA%sT 358# Shanks writes that part of southwest Alaska (e.g. Aniak) 359# switched from -11:00 to -10:00 on 1968-09-22 at 02:00, 360# and another part (e.g. Akiak) made the same switch five weeks later. 361# These switches don't quite make our 1970 cutoff. 362 363# Hawaii 364# --- 39 unchanged lines hidden (view full) --- 404 -7:00 US M%sT 1944 Jan 1 00:01 405 -7:00 - MST 1944 Apr 1 00:01 406 -7:00 US M%sT 1944 Oct 1 00:01 407 -7:00 - MST 1967 408 -7:00 US M%sT 1968 Mar 21 409 -7:00 - MST 410# From Arthur David Olson (1988-02-13): 411# A writer from the Inter Tribal Council of Arizona, Inc., |
412# notes in private correspondence dated 1987-12-28 that "Presently, only the |
413# Navajo Nation participates in the Daylight Saving Time policy, due to its 414# large size and location in three states." (The "only" means that other 415# tribal nations don't use DST.) 416 417Link America/Denver America/Shiprock 418 |
419# Southern Idaho (Ada, Adams, Bannock, Bear Lake, Bingham, Blaine, 420# Boise, Bonneville, Butte, Camas, Canyon, Caribou, Cassia, Clark, 421# Custer, Elmore, Franklin, Fremont, Gem, Gooding, Jefferson, Jerome, 422# Lemhi, Lincoln, Madison, Minidoka, Oneida, Owyhee, Payette, Power, 423# Teton, Twin Falls, Valley, Washington counties) and eastern Oregon 424# switched four weeks late in 1974. 425# |
426# Zone NAME GMTOFF RULES FORMAT [UNTIL] 427Zone America/Boise -7:44:49 - LMT 1883 Nov 18 12:00 428 -8:00 US P%sT 1923 May 13 2:00 429 -7:00 US M%sT 1974 430 -7:00 - MST 1974 Feb 3 2:00 431 -7:00 US M%sT 432 433# Indiana --- 522 unchanged lines hidden (view full) --- 956Rule Mont 1919 only - Oct 25 2:30 0 S 957Rule Mont 1920 only - May 2 2:30 1:00 D 958Rule Mont 1920 1922 - Oct Sun>=1 2:30 0 S 959Rule Mont 1921 only - May 1 2:00 1:00 D 960Rule Mont 1922 only - Apr 30 2:00 1:00 D 961Rule Mont 1924 only - May 17 2:00 1:00 D 962Rule Mont 1924 1926 - Sep lastSun 2:30 0 S 963Rule Mont 1925 1926 - May Sun>=1 2:00 1:00 D |
964# The 1927-to-1937 rules can be expressed more simply as 965# Rule Mont 1927 1937 - Apr lastSat 24:00 1:00 D 966# Rule Mont 1927 1937 - Sep lastSat 24:00 0 S 967# The rules below avoid use of 24:00 968# (which pre-1998 versions of zic cannot handle). 969Rule Mont 1927 only - May 1 0:00 1:00 D 970Rule Mont 1927 1932 - Sep lastSun 0:00 0 S 971Rule Mont 1928 1931 - Apr lastSun 0:00 1:00 D 972Rule Mont 1932 only - May 1 0:00 1:00 D 973Rule Mont 1933 1940 - Apr lastSun 0:00 1:00 D 974Rule Mont 1933 only - Oct 1 0:00 0 S 975Rule Mont 1934 1939 - Sep lastSun 0:00 0 S |
976Rule Mont 1946 1973 - Apr lastSun 2:00 1:00 D 977Rule Mont 1945 1948 - Sep lastSun 2:00 0 S 978Rule Mont 1949 1950 - Oct lastSun 2:00 0 S 979Rule Mont 1951 1956 - Sep lastSun 2:00 0 S 980Rule Mont 1957 1973 - Oct lastSun 2:00 0 S 981 982Rule Toronto 1919 only - Mar 30 23:30 1:00 D 983Rule Toronto 1919 only - Oct 26 0:00 0 S 984Rule Toronto 1920 only - May 2 2:00 1:00 D 985Rule Toronto 1920 only - Sep 26 0:00 0 S 986Rule Toronto 1921 only - May 15 2:00 1:00 D 987Rule Toronto 1921 only - Sep 15 2:00 0 S 988Rule Toronto 1922 1923 - May Sun>=8 2:00 1:00 D 989# Shanks says 1923-09-19; assume it's a typo and that "-16" was meant. 990Rule Toronto 1922 1926 - Sep Sun>=15 2:00 0 S 991Rule Toronto 1924 1927 - May Sun>=1 2:00 1:00 D |
992# The 1927-to-1939 rules can be expressed more simply as 993# Rule Toronto 1927 1937 - Sep Sun>=25 2:00 0 S 994# Rule Toronto 1928 1937 - Apr Sun>=25 2:00 1:00 D 995# Rule Toronto 1938 1940 - Apr lastSun 2:00 1:00 D 996# Rule Toronto 1938 1939 - Sep lastSun 2:00 0 S 997# The rules below avoid use of Sun>=25 998# (which pre-2004 versions of zic cannot handle). 999Rule Toronto 1927 1932 - Sep lastSun 2:00 0 S 1000Rule Toronto 1928 1931 - Apr lastSun 2:00 1:00 D 1001Rule Toronto 1932 only - May 1 2:00 1:00 D 1002Rule Toronto 1933 1940 - Apr lastSun 2:00 1:00 D 1003Rule Toronto 1933 only - Oct 1 2:00 0 S 1004Rule Toronto 1934 1939 - Sep lastSun 2:00 0 S |
1005Rule Toronto 1945 1946 - Sep lastSun 2:00 0 S 1006Rule Toronto 1946 only - Apr lastSun 2:00 1:00 D 1007Rule Toronto 1947 1949 - Apr lastSun 0:00 1:00 D 1008Rule Toronto 1947 1948 - Sep lastSun 0:00 0 S 1009Rule Toronto 1949 only - Nov lastSun 0:00 0 S 1010Rule Toronto 1950 1973 - Apr lastSun 2:00 1:00 D 1011Rule Toronto 1950 only - Nov lastSun 2:00 0 S 1012Rule Toronto 1951 1956 - Sep lastSun 2:00 0 S 1013# Shanks says Toronto ended DST a week early in 1971, namely on 1971-10-24, 1014# but Mark Brader wrote (2003-05-31) that he checked the 1971-10-30 issue 1015# of the Toronto Star, and it said that DST ended 1971-10-31 as usual. 1016Rule Toronto 1957 1973 - Oct lastSun 2:00 0 S 1017 1018# From Paul Eggert (2003-07-27): 1019# Willett (1914-03) writes (p. 17) "In the Cities of Fort William, and 1020# Port Arthur, Ontario, the principle of the Bill has been in 1021# operation for the past three years, and in the City of Moose Jaw, |
1022# Saskatchewan, for one year." |
1023 |
1024# From David Bryan via Tory Tronrud, Director/Curator, 1025# Thunder Bay Museum (2003-11-12): 1026# There is some suggestion, however, that, by-law or not, daylight 1027# savings time was being practiced in Fort William and Port Arthur 1028# before 1909.... [I]n 1910, the line between the Eastern and Central 1029# Time Zones was permanently moved about two hundred miles west to 1030# include the Thunder Bay area.... When Canada adopted daylight 1031# savings time in 1916, Fort William and Port Arthur, having done so 1032# already, did not change their clocks.... During the Second World 1033# War,... [t]he cities agreed to implement DST during the summer 1034# months for the remainder of the war years. 1035 |
1036# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1037Zone America/Montreal -4:54:16 - LMT 1884 1038 -5:00 Mont E%sT 1918 1039 -5:00 Canada E%sT 1919 1040 -5:00 Mont E%sT 1942 Feb 9 2:00s 1041 -5:00 Canada E%sT 1946 1042 -5:00 Mont E%sT 1974 1043 -5:00 Canada E%sT 1044Zone America/Toronto -5:17:32 - LMT 1895 1045 -5:00 Canada E%sT 1919 1046 -5:00 Toronto E%sT 1942 Feb 9 2:00s 1047 -5:00 Canada E%sT 1946 1048 -5:00 Toronto E%sT 1974 1049 -5:00 Canada E%sT 1050Zone America/Thunder_Bay -5:57:00 - LMT 1895 |
1051 -6:00 - CST 1910 1052 -5:00 - EST 1942 |
1053 -5:00 Canada E%sT 1970 1054 -5:00 Mont E%sT 1973 1055 -5:00 - EST 1974 1056 -5:00 Canada E%sT 1057Zone America/Nipigon -5:53:04 - LMT 1895 1058 -5:00 Canada E%sT 1940 Sep 29 1059 -5:00 1:00 EDT 1942 Feb 9 2:00s 1060 -5:00 Canada E%sT --- 915 unchanged lines hidden --- |