Deleted Added
sdiff udiff text old ( 17200 ) new ( 19878 )
full compact
northamerica (17200) northamerica (19878)
1# @(#)northamerica 7.26
1# @(#)northamerica 7.28
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
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):
8# From Paul Eggert <eggert@twinsun.com> (1994-08-17):
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

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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.
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

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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.
44# See, for example, the front page of the Saturday, 1974-10-26
45# and Sunday, 1974-10-27 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
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):
63# From Bob Devine (1988-01-28):
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
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):
79# From U. S. Naval Observatory (1989-01-19):
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
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):
95# From Arthur David Olson (1989-01-21):
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
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):
101# From Arthur David Olson (1988-02-13):
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
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
104# up to 1967-04-01 (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)
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
114# Next, names from 1967-04-01 until 1983-11-30 (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
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:
124# And after 1983-11-30:
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

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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
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

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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
153
154# US Central time, represented by Chicago
155# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
156Rule Chicago 1920 only - Jun 13 2:00 1:00 D
157Rule Chicago 1920 1921 - Oct lastSun 2:00 0 S
158Rule Chicago 1921 only - Mar lastSun 2:00 1:00 D
159Rule Chicago 1922 1966 - Apr lastSun 2:00 1:00 D
160Rule Chicago 1922 1954 - Sep lastSun 2:00 0 S
161Rule Chicago 1955 1966 - Oct lastSun 2:00 0 S
162# Zone NAME GMTOFF RULES FORMAT [UNTIL]
163Zone America/Chicago -5:50:36 - LMT 1883 Nov 18 12:00
164 -6:00 US C%sT 1920
165 -6:00 Chicago C%sT 1936 Mar 1 2:00
166 -5:00 - EST 1936 Nov 15 2:00
167 -6:00 Chicago C%sT 1942
168 -6:00 US C%sT 1946
169 -6:00 Chicago C%sT 1967
170 -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
171
172# US Mountain time, represented by Denver
173# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
174Rule Denver 1920 1921 - Mar lastSun 2:00 1:00 D
175Rule Denver 1920 only - Oct lastSun 2:00 0 S
176Rule Denver 1921 only - May 22 2:00 0 S
177Rule Denver 1965 1966 - Apr lastSun 2:00 1:00 D
178Rule Denver 1965 1966 - Oct lastSun 2:00 0 S
179# Zone NAME GMTOFF RULES FORMAT [UNTIL]
180Zone America/Denver -6:59:56 - LMT 1883 Nov 18 12:00
181 -7:00 US M%sT 1920
182 -7:00 Denver M%sT 1942
183 -7:00 US M%sT 1946
184 -7:00 Denver M%sT 1967
185 -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
186
187# US Pacific time, represented by Los Angeles
188# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
189Rule CA 1948 only - Mar 14 2:00 1:00 D
190Rule CA 1949 only - Jan 1 2:00 0 S
191Rule CA 1950 1966 - Apr lastSun 2:00 1:00 D
192Rule CA 1950 1961 - Sep lastSun 2:00 0 S
193Rule CA 1962 1966 - Oct lastSun 2:00 0 S
194# Zone NAME GMTOFF RULES FORMAT [UNTIL]
195Zone America/Los_Angeles -7:52:58 - LMT 1883 Nov 18 12:00
196 -8:00 US P%sT 1946
197 -8:00 CA P%sT 1967
198 -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,
199
200# Alaska
201# AK%sT is the modern abbreviation for -9:00 per USNO.
202#
203# From Paul Eggert (1995-12-19):
204# 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.
205# and from east-of-GMT to west-of-GMT days, when the US bought it from Russia.
206# This was on 1867-10-18. We omit this transition, since we can't represent
207# changes 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

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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
208#
209# Zone NAME GMTOFF RULES FORMAT [UNTIL]
210Zone America/Juneau -8:57:41 - LMT 1900 Aug 20 12:00
211 -8:00 - PST 1942
212 -8:00 US P%sT 1946
213 -8:00 - PST 1969
214 -8:00 US P%sT 1983 Oct 30 2:00
215 -9:00 US AK%sT

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240 -11:00 - BST 1969
241 -11:00 US B%sT 1983 Oct 30 2:00
242 -10:00 US HA%sT
243# Shanks writes that part of southwest Alaska (e.g. Aniak)
244# switched from -11:00 to -10:00 on 1968-09-22 at 02:00,
245# and another part (e.g. Akiak) made the same switch five weeks later.
246# These switches don't quite make our 1970 cutoff.
247
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#

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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
248# Hawaii
249#
250# From Arthur David Olson:
251# And then there's Hawaii.
252# DST was observed for one day in 1933;
253# standard time was changed by half an hour in 1947;
254# it's always standard as of 1986.
255#

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262 -10:30 US H%sT 1947 Jun 8 2:00
263 -10:00 - HST
264
265Zone Pacific/Midway -11:49:28 - LMT 1901
266 -11:00 - NST 1967 Apr # N=Nome
267 -11:00 - BST 1983 Nov 30 # B=Bering
268 -11:00 - SST # S=Samoa
269
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
270# Now we turn to US areas that have diverged from the consensus since 1970.
271
272# Arizona mostly uses MST.
273Zone America/Phoenix -7:28:18 - LMT 1883 Nov 18 12:00
274 -7:00 US M%sT 1944 Jan 1 00:01
275 -7:00 - MST 1944 Mar 17 00:01
276 -7:00 US M%sT 1944 Oct 1 00:01
277 -7:00 - MST 1967
278 -7:00 US M%sT 1968
279 -7:00 - MST
293
294# ZONE-DESCR America Phoenix United_States Arizona (except Navajo Nation)
295
296# From Arthur David Olson (February 13, 1988):
280# From Arthur David Olson (1988-02-13):
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
281# A writer from the Inter Tribal Council of Arizona, Inc.,
282# notes in private correspondence dated 12/28/87 that "Presently, only the
283# Navajo Nation participates in the Daylight Saving Time policy, due to its
284# large size and location in three states." (The "only" means that other
285# tribal nations don't use DST.)
286
287Link America/Denver America/Shiprock
288
289# Southern Idaho and eastern Oregon switched four weeks late in 1974.
290# Zone NAME GMTOFF RULES FORMAT [UNTIL]
291Zone America/Boise -7:44:49 - LMT 1883 Nov 18 12:00
292 -8:00 US P%sT 1923 May 13 2:00
293 -7:00 US M%sT 1974
294 -7:00 - MST 1974 Feb 3 2:00
295 -7:00 US M%sT
296
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,

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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
297# Indiana
298#
299# From Paul Eggert (1995-12-19):
300# Indiana generally observes either EST all year, or CST/CDT,
301# but areas near Cincinnati and Louisville use those cities' timekeeping
302# and in 1969 and 1970 the whole state observed daylight time;
303# and there are other exceptions as noted below.
304# Shanks partitions Indiana into 345 regions, each with its own time history,

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326 -6:00 US C%sT 1946
327 -6:00 Indianapolis C%sT 1955 Apr 24 2:00
328 -5:00 - EST 1957 Sep 29 2:00
329 -6:00 - CST 1958 Apr 27 2:00
330 -5:00 - EST 1969
331 -5:00 US E%sT 1971
332 -5:00 - EST
333Link 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
334#
335# Part of Crawford County, Indiana, last observed DST in 1975,
336# and left its clocks alone in 1974.
337# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
338Rule Marengo 1951 only - Apr lastSun 2:00 1:00 D
339Rule Marengo 1951 only - Sep lastSun 2:00 0 S
340Rule Marengo 1954 1960 - Apr lastSun 2:00 1:00 D
341Rule Marengo 1954 1960 - Sep lastSun 2:00 0 S
342# Zone NAME GMTOFF RULES FORMAT [UNTIL]
343Zone America/Indiana/Marengo -5:45:23 - LMT 1883 Nov 18 12:00
344 -6:00 US C%sT 1951
345 -6:00 Marengo C%sT 1961 Apr 30 2:00
346 -5:00 - EST 1969
347 -5:00 US E%sT 1974 Jan 6 2:00
348 -6:00 1:00 CDT 1974 Oct 27 2:00
349 -5:00 US E%sT 1976
350 -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
351#
352# 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
353# From Arthur David Olson (1991-10-28):
354# An article on page A3 of the Sunday, 1991-10-27 Washington Post
381# notes that Starke County switched from Central time to Eastern time as of
355# notes that Starke County switched from Central time to Eastern time as of
382# October 27, 1991.
356# 1991-10-27.
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
357# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
358Rule Starke 1947 1961 - Apr lastSun 2:00 1:00 D
359Rule Starke 1947 1954 - Sep lastSun 2:00 0 S
360Rule Starke 1955 1956 - Oct lastSun 2:00 0 S
361Rule Starke 1957 1958 - Sep lastSun 2:00 0 S
362Rule Starke 1959 1961 - Oct lastSun 2:00 0 S
363# Zone NAME GMTOFF RULES FORMAT [UNTIL]
364Zone America/Indiana/Knox -5:46:30 - LMT 1883 Nov 18 12:00
365 -6:00 US C%sT 1947
366 -6:00 Starke C%sT 1962 Apr 29 2:00
367 -5:00 - EST 1963 Oct 27 2:00
368 -6:00 US C%sT 1991 Oct 27 2:00
369 -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
370#
371# Switzerland County, Indiana, last observed DST in 1972.
372# Zone NAME GMTOFF RULES FORMAT [UNTIL]
373Zone America/Indiana/Vevay -5:40:16 - LMT 1883 Nov 18 12:00
374 -6:00 US C%sT 1954 Apr 25 2:00
375 -5:00 - EST 1969
376 -5:00 US E%sT 1973
377 -5:00 - EST
378
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

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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
379# Part of Kentucky left its clocks alone in 1974.
380# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
381Rule Louisville 1921 only - May 1 2:00 1:00 D
382Rule Louisville 1921 only - Sep 1 2:00 0 S
383Rule Louisville 1941 1961 - Apr lastSun 2:00 1:00 D
384Rule Louisville 1941 only - Sep lastSun 2:00 0 S
385Rule Louisville 1946 only - Jun 2 2:00 0 S
386Rule Louisville 1950 1955 - Sep lastSun 2:00 0 S

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391 -6:00 Louisville C%sT 1942
392 -6:00 US C%sT 1946
393 -6:00 Louisville C%sT 1961 Jul 23 2:00
394 -5:00 - EST 1968
395 -5:00 US E%sT 1974 Jan 6 2:00
396 -6:00 1:00 CDT 1974 Oct 27 2:00
397 -5:00 US E%sT
398
432# ZONE-DESCR America Louisville United_States Kentucky: Louisville area
433
434# Michigan
435#
399# Michigan
400#
436# From Bob Devine (January 28, 1988):
401# From Bob Devine (1988-01-28):
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

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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
402# Michigan didn't observe DST from 1968 to 1973.
403#
404# From Paul Eggert (1995-12-19):
405# Shanks writes that Michigan started using standard time on 1885 Sep 18,
406# but Howse (p 126) writes that Detroit kept
407#
408# local time until 1900 when the City Council decreed that clocks should
409# be put back twenty-eight minutes to Central Standard Time. Half the

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425Zone America/Detroit -5:32:11 - LMT 1905
426 -6:00 - CST 1915 May 15 2:00
427 -5:00 - EST 1942
428 -5:00 US E%sT 1946
429 -5:00 Detroit E%sT 1973
430 -5:00 US E%sT 1975
431 -5:00 - EST 1975 Apr 27 2:00
432 -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
433#
434# The Michigan border with Wisconsin switched from EST to CST/CDT in 1973.
435# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
436Rule Menominee 1946 only - Apr lastSun 2:00 1:00 D
437Rule Menominee 1946 only - Sep lastSun 2:00 0 S
438Rule Menominee 1966 only - Apr lastSun 2:00 1:00 D
439Rule Menominee 1966 only - Oct lastSun 2:00 0 S
440# Zone NAME GMTOFF RULES FORMAT [UNTIL]
441Zone America/Menominee -5:50:27 - LMT 1885 Sep 18 12:00
442 -6:00 US C%sT 1946
443 -6:00 Menominee C%sT 1969 Apr 27 2:00
444 -5:00 - EST 1973 Apr 29 2:00
445 -6:00 US C%sT
446
485# ZONE-DESCR America Menominee United_States Michigan: Upper Peninsula
486
487# Navassa
488# uninhabited
489
447# Navassa
448# uninhabited
449
490# Navassa
491# no information; probably like US/Eastern
492
450
451# Old names, for S5 users
452
453# Link LINK-FROM LINK-TO
454Link America/New_York EST5EDT
455Link America/Chicago CST6CDT
456Link America/Denver MST7MDT
457Link America/Los_Angeles PST8PDT
458Link America/Indianapolis EST
459Link America/Phoenix MST
460Link Pacific/Honolulu HST
461
493################################################################################
494
495
462################################################################################
463
464
496# From Paul Eggert <eggert@twinsun.com> (November 18, 1993):
465# From Paul Eggert <eggert@twinsun.com> (1993-11-18):
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#
466# A good source for time zone historical data outside the US is
467# Thomas G. Shanks, The International Atlas (3rd edition),
468# San Diego: ACS Publications, Inc. (1991).
469# Except where otherwise noted, it is the source for the data below.
470#
471# Another source occasionally used is Edward W. Whitman, World Time Differences,
472# Whitman Publishing Co, 2 Niagara Av, Ealing, London (undated), which
473# I found in the UCLA library.
474#
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#
475# See the `europe' file for Greenland.
476#
511# See the `africa' file for Zone naming conventions.
477# See the `africa' file for time zone naming and abbreviation 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

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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
478
479# Canada
480
481# From Alain LaBont<e'> <ALB@immedia.ca> (1994-11-14):
482# I post here the time zone abbreviations standardized in Canada
483# for both English and French in the CAN/CSA-Z234.4-89 standard....
484#
485# UTC Standard time Daylight savings time

--- 72 unchanged lines hidden (view full) ---

558Rule StJohns 1988 only - Apr Sun>=1 2:00 2:00 DD
559Rule StJohns 1989 max - Apr Sun>=1 2:00 1:00 D
560# St John's has an apostrophe, but Posix file names can't have apostrophes.
561# Zone NAME GMTOFF RULES FORMAT [UNTIL]
562Zone America/St_Johns -3:30:52 - LMT 1884
563 -3:31 StJohns N%sT 1935 Mar 30
564 -3:30 StJohns N%sT
565
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

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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
566
567# Labrador, New Brunswick, Nova Scotia, Prince Edward I
568
569# From Paul Eggert (1996-06-12):
570# Shanks writes that since 1970 most of this region has been like Halifax.
571# Many locales did not observe peacetime DST until 1972;
572# Glace Bay, NS is the largest that we know of.
573# Shanks also writes that Liverpool, NS was the only town in Canada to observe

--- 44 unchanged lines hidden (view full) ---

618Zone America/Halifax -4:14:24 - LMT 1902 Jun 15
619 -4:00 Halifax A%sT
620Zone America/Glace_Bay -3:59:48 - LMT 1902 Jun 15
621 -4:00 Canada A%sT 1953
622 -4:00 Halifax A%sT 1954
623 -4:00 - AST 1972
624 -4:00 Halifax A%sT
625
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.

--- 36 unchanged lines hidden (view full) ---

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
626
627# Ontario, Quebec
628
629# From Paul Eggert (1996-06-12):
630# Shanks writes that since 1970 most of this region has been like Montreal.
631# Thunder Bay skipped DST in 1973.
632# Many smaller locales did not observe peacetime DST until 1974;
633# Nipigon (EST) and Rainy River (CST) are the largest that we know of.

--- 36 unchanged lines hidden (view full) ---

670 -5:00 Mont E%sT 1973
671 -5:00 - EST 1974
672 -5:00 Canada E%sT
673Zone America/Nipigon -5:53:04 - LMT 1895
674 -5:00 Canada E%sT
675Zone America/Rainy_River -6:17:56 - LMT 1895
676 -6:00 Canada C%sT
677
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
678
679# Manitoba
680
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

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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
681# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
682Rule Winn 1916 only - Apr 23 0:00 1:00 D
683Rule Winn 1916 only - Sep 17 0:00 0 S
684Rule Winn 1918 only - Apr 14 2:00 1:00 D
685Rule Winn 1918 only - Oct 31 2:00 0 S
686Rule Winn 1937 only - May 16 2:00 1:00 D
687Rule Winn 1937 only - Sep 26 2:00 0 S
688Rule Winn 1942 only - Feb 9 2:00 1:00 D

--- 12 unchanged lines hidden (view full) ---

701Rule Winn 1963 only - Sep 22 2:00 0 S
702Rule Winn 1966 1986 - Apr lastSun 2:00 1:00 D
703Rule Winn 1966 max - Oct lastSun 2:00 0 S
704Rule Winn 1987 max - Apr Sun>=1 2:00 1:00 D
705# Zone NAME GMTOFF RULES FORMAT [UNTIL]
706Zone America/Winnipeg -6:28:36 - LMT 1887 Jul 16
707 -6:00 Winn C%sT
708
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
709
710# Saskatchewan
711
712# From Paul Eggert (1996-06-12):
713# Shanks writes that since 1970 most of this region has been like Regina.
714# Some western towns (e.g. Swift Current) switched from MST/MDT to CST in 1972.
715# Other western towns (e.g. Lloydminster) are like Edmonton.
716
758# From W. Jones <jones@skdad.usask.ca> (November 6, 1992):
717# From W. Jones <jones@skdad.usask.ca> (1992-11-06):
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

--- 41 unchanged lines hidden (view full) ---

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
718# The. . .below is based on information I got from our law library, the
719# provincial archives, and the provincial Community Services department.
720# A precise history would require digging through newspaper archives, and
721# since you didn't say what you wanted, I didn't bother.
722#
723# Saskatchewan is split by a time zone meridian (105W) and over the years
724# the boundary became pretty ragged as communities near it reevaluated
725# their affiliations in one direction or the other. In 1965 a provincial

--- 41 unchanged lines hidden (view full) ---

767 -7:00 Regina M%sT 1960 Apr lastSun 2:00
768 -6:00 - CST
769Zone America/Swift_Current -7:11:20 - LMT 1905 Sep
770 -7:00 Canada M%sT 1946 Apr lastSun 2:00
771 -7:00 Regina M%sT 1950
772 -7:00 Swift M%sT 1972 Apr lastSun 2:00
773 -6:00 - CST
774
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

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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
775
776# Alberta
777
778# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
779Rule Edm 1918 1919 - Apr Sun>=8 2:00 1:00 D
780Rule Edm 1918 only - Oct 31 2:00 0 S
781Rule Edm 1919 only - May 27 2:00 0 S
782Rule Edm 1920 1923 - Apr lastSun 2:00 1:00 D

--- 9 unchanged lines hidden (view full) ---

792Rule Edm 1969 only - Oct lastSun 2:00 0 S
793Rule Edm 1972 1986 - Apr lastSun 2:00 1:00 D
794Rule Edm 1972 max - Oct lastSun 2:00 0 S
795Rule Edm 1987 max - Apr Sun>=1 2:00 1:00 D
796# Zone NAME GMTOFF RULES FORMAT [UNTIL]
797Zone America/Edmonton -7:33:52 - LMT 1906 Sep
798 -7:00 Edm M%sT
799
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

--- 9 unchanged lines hidden (view full) ---

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
800
801# British Columbia
802
803# From Paul Eggert (1996-06-12):
804# Shanks writes that since 1970 most of this region has been like Vancouver.
805# Dawswon Creek uses MST. Much of east BC is like Edmonton.
806
807# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S

--- 9 unchanged lines hidden (view full) ---

817# Zone NAME GMTOFF RULES FORMAT [UNTIL]
818Zone America/Vancouver -8:12:28 - LMT 1884
819 -8:00 Vanc P%sT
820Zone America/Dawson_Creek -8:00:56 - LMT 1884
821 -8:00 Canada P%sT 1947
822 -8:00 Vanc P%sT 1972 Aug 30 2:00
823 -7:00 - MST
824
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
825
826# Northwest Territories, Yukon
827
828# From Paul Eggert (1996-06-12):
829# Dawson switched to PST in 1973. Inuvik switched to MST in 1979.
830# Shanks's table for Watson Lake is corrupted, so we have no data there.
831
832# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
833Rule NT_YK 1918 only - Apr 14 2:00 1:00 D
834Rule NT_YK 1918 only - Oct 27 2:00 0 S
835Rule NT_YK 1919 only - May 25 2:00 1:00 D
836Rule NT_YK 1919 only - Nov 1 0:00 0 S
837Rule NT_YK 1942 only - Feb 9 2:00 1:00 D
838Rule 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

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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
839Rule NT_YK 1965 only - Apr lastSun 0:00 2:00 DD
840Rule NT_YK 1965 only - Oct lastSun 2:00 0 S
841Rule NT_YK 1980 1986 - Apr lastSun 2:00 1:00 D
842Rule NT_YK 1980 max - Oct lastSun 2:00 0 S
843Rule NT_YK 1987 max - Apr Sun>=1 2:00 1:00 D
844# Zone NAME GMTOFF RULES FORMAT [UNTIL]
845Zone America/Pangnirtung -4:22:56 - LMT 1884
846 -4:00 NT_YK A%sT

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855 -7:00 NT_YK M%sT
856Zone America/Whitehorse -9:00:12 - LMT 1900 Aug 20
857 -9:00 NT_YK Y%sT 1966 Jul 1 2:00
858 -8:00 NT_YK P%sT
859Zone America/Dawson -9:17:40 - LMT 1900 Aug 20
860 -9:00 NT_YK Y%sT 1973 Oct lastSun 2:00
861 -8:00 NT_YK P%sT
862
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
863
864###############################################################################
865
866# Mexico
867
868# From Guy Harris:
869# Rules are from the Official Airline Guide, Worldwide Edition, for 1987.
870# Rules prior to 1987 are unknown.
871# The comments in the OAG say "Only Ensenada, Mexicale, San Felipe and Tijuana
872# observe DST." This is presumably Baja California Norte, above 28th parallel,
873# as listed there; [there is also] "Baja California Sur and N. Pacific
874# Coast (States of Sinaloa and Sonora)."
875
931# From Bob Devine (January 28, 1988):
876# From Bob Devine (1988-01-28):
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
877# The Federal District (where Mexico City is) has observed [DST] several
878# times but not recently.
879#
880# I don't where to drawn the line in the North Baja area. 28th latitude
881# sounds good -- but it may be higher (how far [d]o radio stations from
882# San Diego affect culture?).
883#
884# The dates of DST probably go back to 1981. The rules are the same as
885# US's. This is going to be a headache for US presidential electi[o]n years!
886
942# From Arthur David Olson (February 13, 1988)
887# From Arthur David Olson (1988-02-13)
943# Since the 1981 starting date is only "probable," we'll keep the 1987
944# starting date below.
945
888# Since the 1981 starting date is only "probable," we'll keep the 1987
889# starting date below.
890
946# From U. S. Naval Observatory (January 19, 1989):
891# From U. S. Naval Observatory (1989-01-19):
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
892# MEXICO BAJA CAL N 7 H BEHIND UTC BAJA CALIFORNIA SUR AND
893# MEXICO BAJA CAL N N. PACIFIC COAST (STATES
894# MEXICO BAJA CAL N OF SINALOA AND SONORA)
895# MEXICO BAJA CAL N 8 H BEHIND UTC ABOVE 28TH PARALLAL APR 3
896# MEXICO BAJA CAL N - OCT 29
897# MEXICO BAJA CAL N 7 H BEHIND UTC ABOVE 28TH PARALLAL APR 3
898# MEXICO BAJA CAL N - 0CT 29
899# MEXICO 6 H BEHIND UTC STATES OF DURANGO,
900# MEXICO COAHUILA, NUEVO LEON,
901# MEXICO TAMAULIPAS
902# MEXICO 5 H BEHIND UTC STATES OF DURANGO,
903# MEXICO COAHUILA, NUEVO LEON,
904# MEXICO TAMAULIPAS APR 3 - OCT 29
905# MEXICO 6 H BEHIND UTC GENERAL MEXICO, STATES OF
906# MEXICO CAMPECHE, QUINTANA ROO AND
907# MEXICO YUCATAN
908
964# From Arthur David Olson (January 21, 1989):
909# From Arthur David Olson (1989-01-21):
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.

--- 50 unchanged lines hidden (view full) ---

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
910# April 3 fell on a Sunday in 1988; October 29 fell on a Sunday in 1989. Ahem.
911# USNO claims there should be four Mexican zones rather than three:
912# a zone that's GMT-8 with DST; a zone that's always GMT-7;
913# a zone that's GMT-6 with DST; and a zone that's always GMT-6.
914
915# From Paul Eggert <eggert@twinsun.com> (1993-11-18):
916# Shanks also says there are four zones, but disagrees about the fourth.
917# Instead of GMT-6 with DST, he says there's GMT-8 without DST.

--- 50 unchanged lines hidden (view full) ---

968# Zone NAME GMTOFF RULES FORMAT [UNTIL]
969Zone America/Mexico_City -6:36:36 - LMT 1922 Jan 1 0:23:24
970 -7:00 - MST 1927 Jun 10 23:00
971 -6:00 - CST 1930 Nov 15
972 -7:00 - MST 1931 May 1 23:00
973 -6:00 - CST 1931 Oct
974 -7:00 - MST 1932 Mar 30 23:00
975 -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
976Zone America/Mazatlan -7:05:40 - LMT 1921 Dec 31 23:54:20
977 -7:00 - MST 1927 Jun 10 23:00
978 -6:00 - CST 1930 Nov 15
979 -7:00 - MST 1931 May 1 23:00
980 -6:00 - CST 1931 Oct
981 -7:00 - MST 1932 Mar 30 23:00
982 -6:00 - CST 1942 Apr
983 -7:00 - MST 1949 Jan 14
984 -8:00 - PST 1970
985 -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
986Zone America/Tijuana -7:48:04 - LMT 1922 Jan 1 0:11:56
987 -8:00 - PST 1927 Jun 10 23:00
988 -7:00 - MST 1930 Nov 16
989 -8:00 - PST 1942 Apr
990 -7:00 - MST 1949 Jan 14
991 -8:00 BajaN P%sT 1967 Apr lastSun 2:00
992 -8:00 US P%sT 1996
993 -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
994Zone America/Ensenada -7:46:28 - LMT 1922 Jan 1 0:13:32
995 -8:00 - PST 1927 Jun 10 23:00
996 -7:00 - MST 1930 Nov 16
997 -8:00 - PST 1942 Apr
998 -7:00 - MST 1949 Jan 14
999 -8:00 - PST 1996
1000 -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
1001#
1002# Revillagigedo Is
1003# no information
1004
1005###############################################################################
1006
1007# Anguilla
1008# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1009Zone America/Anguilla -4:12:16 - LMT 1912 Mar 2
1010 -4:00 - AST
1011
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
1012# Antigua and Barbuda
1013# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1014Zone America/Antigua -4:07:12 - LMT 1912 Mar 2
1015 -5:00 - EST 1951
1016 -4:00 - AST
1017
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
1018# Bahamas
1019# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1020Rule Bahamas 1964 max - Oct lastSun 2:00 0 S
1021Rule Bahamas 1964 1986 - Apr lastSun 2:00 1:00 D
1022Rule Bahamas 1987 max - Apr Sun>=1 2:00 1:00 D
1023# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1024Zone America/Nassau -5:09:24 - LMT 1912 Mar 2
1025 -5:00 Bahamas E%sT
1026
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
1027# Barbados
1028# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1029Rule Barb 1977 only - Jun 12 2:00 1:00 D
1030Rule Barb 1977 1978 - Oct Sun>=1 2:00 0 S
1031Rule Barb 1978 1980 - Apr Sun>=15 2:00 1:00 D
1032Rule Barb 1979 only - Sep 30 2:00 0 S
1033Rule Barb 1980 only - Sep 25 2:00 0 S
1034# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1035Zone America/Barbados -3:58:28 - LMT 1924 # Bridgetown
1036 -3:58 - BMT 1932 # Bridgetown Mean Time
1037 -4:00 Barb A%sT
1038
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
1039# Belize
1040# Whitman entirely disagrees with Shanks; go with Shanks.
1041# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1042Rule Belize 1918 1942 - Oct Sun>=2 0:00 0:30 HD
1043Rule Belize 1919 1943 - Feb Sun>=9 0:00 0 S
1044Rule Belize 1973 only - Dec 5 0:00 1:00 D
1045Rule Belize 1974 only - Feb 9 0:00 0 S
1046Rule Belize 1982 only - Dec 18 0:00 1:00 D
1047Rule Belize 1983 only - Feb 12 0:00 0 S
1048# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1049Zone America/Belize -5:52:48 - LMT 1912 Apr
1050 -6:00 Belize C%sT
1051
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
1052# Bermuda
1053# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1054Zone Atlantic/Bermuda -4:19:04 - LMT 1930 Jan 1 2:00 # Hamilton
1055 -4:00 - AST 1974 Apr 28 2:00
1056 -4:00 Bahamas A%sT
1057
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
1058# Cayman Is
1059# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1060Zone America/Cayman -5:25:32 - LMT 1890 # Georgetown
1061 -5:07 - KMT 1912 Feb # Kingston Mean Time
1062 -5:00 - EST
1063
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
1064# Clipperton
1065# uninhabited
1066
1067# Costa Rica
1068# Shanks gives some very odd dates for 1991, and stops there.
1069# For now, we won't guess further.
1070# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1071Rule CR 1979 1980 - Feb lastSun 0:00 1:00 D
1072Rule CR 1979 1980 - Jun Sun>=1 0:00 0 S
1073Rule CR 1991 only - Jan 19 0:00 1:00 D
1074Rule CR 1991 only - Jul 1 0:00 0 S
1075# There are too many San Joses elsewhere, so we'll use `Costa Rica'.
1076# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1077Zone America/Costa_Rica -5:36:20 - LMT 1890 # San Jose
1078 -5:36 - SJMT 1921 Jan 15 # San Jose Mean Time
1079 -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
1080# Coco
1081# no information; probably like America/Costa_Rica
1082
1083# Cuba
1084
1161# From Bob Devine (January 28, 1988):
1085# From Bob Devine (1988-01-28):
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
1086# . . .DST is from 2nd Sunday in May to 2nd Sunday in October since 1981.
1087# Change at midnight. In 1979 & 1980, started at 3rd Sunday in March
1088# (I think).
1089
1166# From U. S. Naval Observatory (January 19, 1989):
1090# From U. S. Naval Observatory (1989-01-19):
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

--- 20 unchanged lines hidden (view full) ---

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
1091# CUBA 5 H BEHIND UTC
1092# CUBA 4 H BEHIND UTC MAR 20 - OCT 8
1093
1094# From Shanks (1991):
1095# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1096Rule Cuba 1928 only - Jun 10 0:00 1:00 D
1097Rule Cuba 1928 only - Oct 10 0:00 0 S
1098Rule Cuba 1940 1942 - Jun Sun>=1 0:00 1:00 D

--- 20 unchanged lines hidden (view full) ---

1119Rule Cuba 1990 only - Apr 1 0:00 1:00 D
1120Rule Cuba 1991 max - Mar Sun>=14 0:00 1:00 D
1121
1122# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1123Zone America/Havana -5:29:28 - LMT 1890
1124 -5:30 - HMT 1925 Jul 19 12:00 # Havana MT
1125 -5:00 Cuba C%sT
1126
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
1127# Dominica
1128# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1129Zone America/Dominica -4:05:36 - LMT 1911 Jul 1 0:01 # Roseau
1130 -4:00 - AST
1131
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
1132# Dominican Republic
1133# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1134Rule DR 1966 only - Oct 30 0:00 1:00 D
1135Rule DR 1967 only - Feb 28 0:00 0 S
1136Rule DR 1969 1973 - Oct lastSun 0:00 0:30 HD
1137Rule DR 1970 only - Feb 21 0:00 0 S
1138Rule DR 1971 only - Jan 20 0:00 0 S
1139Rule DR 1972 1974 - Jan 21 0:00 0 S
1140# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1141Zone America/Santo_Domingo -4:39:36 - LMT 1890
1142 -4:40 - SDMT 1933 Apr 1 12:00 # S. Dom. MT
1143 -5:00 DR E%sT 1974 Oct 27
1144 -4:00 - AST
1145
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
1146# El Salvador
1147# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1148Rule Salv 1987 1988 - May Sun>=1 0:00 1:00 D
1149Rule Salv 1987 1988 - Sep lastSun 0:00 0 S
1150# There are too many San Salvadors elsewhere, so we'll use `El Salvador'.
1151# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1152Zone America/El_Salvador -5:56:48 - LMT 1921 # San Salvador
1153 -6:00 Salv C%sT
1154
1237# ZONE-DESCR America El_Salvador El_Salvador All points
1238
1239# Grenada
1240# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1155# Grenada
1156# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1241Zone America/Grenada -4:07:00 - LMT 1911 Jul
1157Zone America/Grenada -4:07:00 - LMT 1911 Jul # St George's
1242 -4:00 - AST
1243
1158 -4:00 - AST
1159
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
1160# Guadeloupe
1161# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1162Zone America/Guadeloupe -4:06:08 - LMT 1911 Jun 8 # Pointe a Pitre
1163 -4:00 - AST
1164
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
1165# Guatemala
1166# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1167Rule Guat 1973 only - Nov 25 0:00 1:00 D
1168Rule Guat 1974 only - Feb 24 0:00 0 S
1169Rule Guat 1983 only - May 21 0:00 1:00 D
1170Rule Guat 1983 only - Sep 22 0:00 0 S
1171# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1172Zone America/Guatemala -6:02:04 - LMT 1918 Oct 5
1173 -6:00 Guat C%sT
1174
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
1175# Haiti
1176# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1177Rule Haiti 1983 only - May 8 0:00 1:00 D
1178Rule Haiti 1984 1987 - Apr lastSun 0:00 1:00 D
1179Rule Haiti 1983 1987 - Oct lastSun 0:00 0 S
1180Rule Haiti 1988 max - Apr Sun>=1 2:00 1:00 D
1181Rule Haiti 1988 max - Oct lastSun 2:00 0 S
1182# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1183Zone America/Port-au-Prince -4:49:20 - LMT 1890
1184 -4:49 - PPMT 1917 Jan 24 12:00 # P-a-P MT
1185 -5:00 Haiti E%sT
1186
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
1187# Honduras
1188# Shanks says 1921 Jan 1; go with Whitman's more precise Apr 1.
1189# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1190Zone America/Tegucigalpa -5:48:52 - LMT 1921 Apr
1191 -6:00 Salv C%sT
1192
1285# ZONE-DESCR America Tegucigalpa Honduras All points
1286
1287# Jamaica
1288
1193# Jamaica
1194
1289# From Bob Devine (January 28, 1988):
1195# From Bob Devine (1988-01-28):
1290# Follows US rules.
1291
1196# Follows US rules.
1197
1292# From U. S. Naval Observatory (January 19, 1989):
1198# From U. S. Naval Observatory (1989-01-19):
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
1199# JAMAICA 5 H BEHIND UTC
1200
1201# From Shanks (1991):
1202# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1203Zone America/Jamaica -5:07:12 - LMT 1890 # Kingston
1204 -5:07 - KMT 1912 Feb # Kingston Mean Time
1205 -5:00 - EST 1974 Jan 6 2:00
1206 -5:00 US E%sT
1207
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
1208# Martinique
1209# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1210Zone America/Martinique -4:04:20 - LMT 1890 # Fort-de-France
1211 -4:04 - FFMT 1911 May # Fort-de-France MT
1212 -4:00 - AST 1980 Apr 6
1213 -4:00 1:00 ADT 1980 Sep 28
1214 -4:00 - AST
1215
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
1216# Montserrat
1217# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1218Zone America/Montserrat -4:08:52 - LMT 1911 Jul 1 0:01 # Plymouth
1219 -4:00 - AST
1220
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
1221# Nicaragua
1222# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1223Rule Nic 1979 1980 - Mar Sun>=16 0:00 1:00 D
1224Rule Nic 1979 1980 - Jun Mon>=23 0:00 0 S
1225# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1226Zone America/Managua -5:45:08 - LMT 1890
1227 -5:45 - MMT 1934 Jun 23 # Managua Mean Time
1228 -6:00 - CST 1973 May
1229 -5:00 - EST 1975 Feb 16
1230 -6:00 Nic C%sT
1231
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
1232# Panama
1233# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1234Zone America/Panama -5:18:08 - LMT 1890
1235 -5:20 - PMT 1908 Apr 22 # Panama Mean Time
1236 -5:00 - EST
1237
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
1238# Puerto Rico
1239# There are too many San Juans elsewhere, so we'll use `Puerto_Rico'.
1240# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1241Zone America/Puerto_Rico -4:24:25 - LMT 1899 Mar 28 12:00 # San Juan
1242 -4:00 - AST 1942 May 3
1243 -4:00 1:00 AWT 1945 Sep 30 2:00
1244 -4:00 - AST
1245
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
1246# St Kitts-Nevis
1247# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1248Zone America/St_Kitts -4:10:52 - LMT 1912 Mar 2 # Basseterre
1249 -4:00 - AST
1250
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
1251# St Lucia
1252# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1253Zone America/St_Lucia -4:04:00 - LMT 1890 # Castries
1254 -4:04 - CMT 1912 # Castries Mean Time
1255 -4:00 - AST
1256
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
1257# St Pierre and Miquelon
1258# There are too many St Pierres elsewhere, so we'll use `Miquelon'.
1259# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1260Zone America/Miquelon -3:44:40 - LMT 1911 May 15 # St Pierre
1261 -4:00 - AST 1980 May
1372 -3:00 Mont SP%sT
1262 -3:00 Mont PM%sT # Pierre & Miquelon Time
1373
1263
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
1264# St Vincent and the Grenadines
1265# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1266Zone America/St_Vincent -4:04:56 - LMT 1890 # Kingstown
1267 -4:05 - KMT 1912 # Kingstown Mean Time
1268 -4:00 - AST
1269
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
1270# Turks and Caicos
1271# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1272Zone America/Grand_Turk -4:44:32 - LMT 1890
1273 -5:07 - KMT 1912 Feb # Kingston Mean Time
1274 -5:00 - EST 1979 Apr 29 2:00
1275 -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
1276
1277# British Virgin Is
1278# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1279Zone America/Tortola -4:18:28 - LMT 1911 Jul # Road Town
1280 -4:00 - AST
1281
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
1282# Virgin Is
1283# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1284Zone America/St_Thomas -4:19:44 - LMT 1911 Jul # Charlotte Amalie
1285 -4:00 - AST
1403
1404# ZONE-DESCR America St_Thomas United_States Virgin Islands