1# @(#)southamerica 7.6
| 1# @(#)southamerica 7.8
|
2
3# This data is by no means authoritative; if you think you know better,
4# go ahead and edit the file (and please send any changes to
5# tz@elsie.nci.nih.gov for general use in the future).
6
7# From Paul Eggert <eggert@twinsun.com> (November 18, 1993):
8# A good source for time zone historical data outside the U.S. is
9# Thomas G. Shanks, The International Atlas (3rd edition),
10# San Diego: ACS Publications, Inc. (1991).
11# Except where otherwise noted, it is the source for the data below.
12#
13# I invented the abbreviations marked `*' in the following table;
14# the rest are from earlier versions of this file, or from other sources.
15# Some of these are just plausible excuses for common English abbreviations.
16# Corrections are welcome!
| 2
3# This data is by no means authoritative; if you think you know better,
4# go ahead and edit the file (and please send any changes to
5# tz@elsie.nci.nih.gov for general use in the future).
6
7# From Paul Eggert <eggert@twinsun.com> (November 18, 1993):
8# A good source for time zone historical data outside the U.S. is
9# Thomas G. Shanks, The International Atlas (3rd edition),
10# San Diego: ACS Publications, Inc. (1991).
11# Except where otherwise noted, it is the source for the data below.
12#
13# I invented the abbreviations marked `*' in the following table;
14# the rest are from earlier versions of this file, or from other sources.
15# Some of these are just plausible excuses for common English abbreviations.
16# Corrections are welcome!
|
17# std dst
18# LMT Local Mean Time
19# -2:00 FST FDT Fernando de Noronha
20# -3:00 EST EDT Eastern South America (conflicts with -5:00)
21# -4:00 AST ADT Andes*, Antilles*, Asuncion*, Atlantic
22# -4:00 CST CDT Chile (conflicts with -6:00)
23# -4:00 WST WDT Western Brazil
24# -5:00 AST ADT Acre (conflicts with -4:00)
25# -5:00 EST EDT Eastern, Ecuador*
26# -6:00 CST CDT Archipelago of Columbus*, Central
27# -7:00 MST MDT Mataveri*, Mountain
| 17# std dst
18# LMT Local Mean Time
19# -2:00 FST FDT Fernando de Noronha
20# -3:00 EST EDT Eastern South America (conflicts with -5:00)
21# -3:00 ARST ARDT Argentina
22# -4:00 AST ADT Andes*, Antilles*, Asuncion*, Atlantic
23# -4:00 CST CDT Chile (conflicts with -6:00)
24# -4:00 WST WDT Western Brazil
25# -5:00 AST ADT Acre (conflicts with -4:00)
26# -5:00 EST EDT Eastern, Ecuador*
27# -6:00 CST CDT Archipelago of Columbus*, Central
28# -7:00 MST MDT Mataveri*, Mountain
|
28#
29# See the `africa' file for Zone naming conventions.
30
31# From Guy Harris:
32# From Official Airline Guide - Worldwide Edition (1987). Countries not
33# listed here do not observe DST, according to the OAG. Time zone names
34# are pure inventions, and none are supplied for countries not observing
35# DST; updates from natives would be appreciated. The times that DST
36# starts and ends are based on the assumption that they switch a 2AM just
37# as everybody else does.
38
39###############################################################################
40
41###############################################################################
42
43# Argentina
44
45# From Bob Devine (January 28, 1988):
46# Argentina: first Sunday in October to first Sunday in April since 1976.
47# Double Summer time from 1969 to 1974. Switches at midnight.
48
49# From U. S. Naval Observatory (January 19, 19889):
50# ARGENTINA 3 H BEHIND UTC
51
| 29#
30# See the `africa' file for Zone naming conventions.
31
32# From Guy Harris:
33# From Official Airline Guide - Worldwide Edition (1987). Countries not
34# listed here do not observe DST, according to the OAG. Time zone names
35# are pure inventions, and none are supplied for countries not observing
36# DST; updates from natives would be appreciated. The times that DST
37# starts and ends are based on the assumption that they switch a 2AM just
38# as everybody else does.
39
40###############################################################################
41
42###############################################################################
43
44# Argentina
45
46# From Bob Devine (January 28, 1988):
47# Argentina: first Sunday in October to first Sunday in April since 1976.
48# Double Summer time from 1969 to 1974. Switches at midnight.
49
50# From U. S. Naval Observatory (January 19, 19889):
51# ARGENTINA 3 H BEHIND UTC
52
|
| 53# From Hernan G. Otero <hernan@isoft.com.ar> (June 26, 1995):
54# I am sending modifications to the Argentinian time zone table...
55# AR was chosen because they are the ISO letters that represent Argentina.
56
|
52# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
53Rule Arg 1930 only - Dec 1 0:00 1:00 D
54Rule Arg 1931 only - Apr 1 0:00 0 S
55Rule Arg 1931 only - Oct 15 0:00 1:00 D
56Rule Arg 1932 1940 - Mar 1 0:00 0 S
57Rule Arg 1932 1939 - Nov 1 0:00 1:00 D
58Rule Arg 1940 only - Jul 1 0:00 1:00 D
59Rule Arg 1941 only - Jun 15 0:00 0 S
60Rule Arg 1941 only - Oct 15 0:00 1:00 D
61Rule Arg 1943 only - Aug 1 0:00 0 S
62Rule Arg 1943 only - Oct 15 0:00 1:00 D
63Rule Arg 1946 only - Mar 1 0:00 0 S
64Rule Arg 1946 only - Oct 1 0:00 1:00 D
65Rule Arg 1963 only - Oct 1 0:00 0 S
66Rule Arg 1963 only - Dec 15 0:00 1:00 D
67Rule Arg 1964 1966 - Mar 1 0:00 0 S
68Rule Arg 1964 1966 - Oct 15 0:00 1:00 D
69Rule Arg 1967 only - Apr 1 0:00 0 S
70Rule Arg 1967 1968 - Oct Sun<=7 0:00 1:00 D
71Rule Arg 1968 1969 - Apr Sun<=7 0:00 0 S
72Rule Arg 1974 only - Jan 23 0:00 1:00 D
73Rule Arg 1974 only - May 1 0:00 0 S
74Rule Arg 1974 1976 - Oct Sun<=7 0:00 1:00 D
75Rule Arg 1975 1977 - Apr Sun<=7 0:00 0 S
76Rule Arg 1985 only - Nov 2 0:00 1:00 D
77Rule Arg 1986 only - Mar 14 0:00 0 S
78Rule Arg 1986 1987 - Oct 25 0:00 1:00 D
79Rule Arg 1987 only - Feb 13 0:00 0 S
80Rule Arg 1988 only - Feb 7 0:00 0 S
81Rule Arg 1988 only - Dec 1 0:00 1:00 D
| 57# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
58Rule Arg 1930 only - Dec 1 0:00 1:00 D
59Rule Arg 1931 only - Apr 1 0:00 0 S
60Rule Arg 1931 only - Oct 15 0:00 1:00 D
61Rule Arg 1932 1940 - Mar 1 0:00 0 S
62Rule Arg 1932 1939 - Nov 1 0:00 1:00 D
63Rule Arg 1940 only - Jul 1 0:00 1:00 D
64Rule Arg 1941 only - Jun 15 0:00 0 S
65Rule Arg 1941 only - Oct 15 0:00 1:00 D
66Rule Arg 1943 only - Aug 1 0:00 0 S
67Rule Arg 1943 only - Oct 15 0:00 1:00 D
68Rule Arg 1946 only - Mar 1 0:00 0 S
69Rule Arg 1946 only - Oct 1 0:00 1:00 D
70Rule Arg 1963 only - Oct 1 0:00 0 S
71Rule Arg 1963 only - Dec 15 0:00 1:00 D
72Rule Arg 1964 1966 - Mar 1 0:00 0 S
73Rule Arg 1964 1966 - Oct 15 0:00 1:00 D
74Rule Arg 1967 only - Apr 1 0:00 0 S
75Rule Arg 1967 1968 - Oct Sun<=7 0:00 1:00 D
76Rule Arg 1968 1969 - Apr Sun<=7 0:00 0 S
77Rule Arg 1974 only - Jan 23 0:00 1:00 D
78Rule Arg 1974 only - May 1 0:00 0 S
79Rule Arg 1974 1976 - Oct Sun<=7 0:00 1:00 D
80Rule Arg 1975 1977 - Apr Sun<=7 0:00 0 S
81Rule Arg 1985 only - Nov 2 0:00 1:00 D
82Rule Arg 1986 only - Mar 14 0:00 0 S
83Rule Arg 1986 1987 - Oct 25 0:00 1:00 D
84Rule Arg 1987 only - Feb 13 0:00 0 S
85Rule Arg 1988 only - Feb 7 0:00 0 S
86Rule Arg 1988 only - Dec 1 0:00 1:00 D
|
82Rule Arg 1989 only - Mar 16 0:00 0 S
83Rule Arg 1989 only - Oct 15 0:00 1:00 D
84Rule Arg 1990 only - Mar 4 0:00 0 S
85# _The Economist_ (8 Jan 1994, p 42) reports that Argentina
86# had DST in 1991-2 and 1992-3, but not in 1990-1 or in 1993-4.
87# It has something to do with electricity companies meeting demand in summer.
88# We don't know the 1991-3 transition times, unfortunately.
| 87#
88# From Hernan G. Otero <hernan@isoft.com.ar> (June 26, 1995):
89# These corrections were contributed by InterSoft Argentina S.A.,
90# obtaining the data from the:
91# Talleres de Hidrografia Naval Argentina
92# (Argentinian Naval Hydrography Institute)
93#
94# Shanks gives 1989 Mar 16 and stops after 1990 Mar 4; go with Otero.
95Rule Arg 1989 1993 - Mar Sun>=1 0:00 0 S
96Rule Arg 1989 1992 - Oct Sun>=15 0:00 1:00 D
97#
98# From Hernan G. Otero <hernan@isoft.com.ar> (June 26, 1995):
99# From this moment on, the law that mandated the daylight saving
100# time corrections was derogated and no more modifications
101# to the time zones (for daylight saving) are now made.
102#
|
89# Zone NAME GMTOFF RULES FORMAT [UNTIL]
90Zone America/Buenos_Aires -3:53:48 - LMT 1894 Nov
91 -4:17 - CMT 1920 May # Cordoba Mean Time
92 -4:00 - AST 1930 Dec
93 -4:00 Arg A%sT 1969 Oct 5
| 103# Zone NAME GMTOFF RULES FORMAT [UNTIL]
104Zone America/Buenos_Aires -3:53:48 - LMT 1894 Nov
105 -4:17 - CMT 1920 May # Cordoba Mean Time
106 -4:00 - AST 1930 Dec
107 -4:00 Arg A%sT 1969 Oct 5
|
94 -3:00 Arg E%sT
| 108 -3:00 Arg AR%sT
|
95
96# ZONE-DESCR America Buenos_Aires Argentina All points
97
98# Bolivia
99# Zone NAME GMTOFF RULES FORMAT [UNTIL]
100Zone America/La_Paz -4:32:36 - LMT 1890
101 -4:33 - LPMT 1931 Oct 15 # La Paz Mean Time
102 -4:33 1:00 LPDT 1932 Mar 21
103 -4:00 - AST
104
105# ZONE-DESCR America La_Paz Bolivia All points
106
107# Brazil
108
109# From Guy Harris:
110# The OAG lists October 25, 1987 and February 12, 1988 as the starting and
111# ending dates, giving them as "estimated date(s) based on previous year". We
112# infer a rule here from one example, always a dangerous practice.... Yes,
113# they really do switch on Saturday, according to the OAG.
114# "Brazil/Acre" is for the Territory of Acre; "Brazil/DeNoronha" is for
115# Fernando De Noronha.
116
117# From Bob Devine (January 28, 1988):
118# The only information I found is that there was no DST up to 1985.
119# But there was some before 1952!
120
121# From U. S. Naval Observatory (January 16, 1989):
122# BRAZIL WEST 5 H BEHIND UTC TERRITORY OF ACRE
123# BRAZIL WEST 4 H BEHIND UTC ACRE OCT 23, '88-FEB 11,
124# BRAZIL '89 (ESTIMATED)
125# BRAZIL CENTRAL 4 H BEHIND UTC MANAUS
126# BRAZIL CENTRAL 3 H BEHIND UTC MANAUS OCT 23, '88-FEB 11,
127# BRAZIL CENTRAL '89 (ESTIMATED)
128# BRAZIL EAST 3 H BEHIND UTC COASTAL STATES, RIO, SAO
129# BRAZIL EAST PAULO, BRASILIA
130# BRAZIL EAST 2 H BEHIND UTC COASTAL STATES, RIO, SAO
131# BRAZIL PAULO, BRASILIA OCT 23,
132# BRAZIL '88-FEB 11, '89
133# BRAZIL (ESTIMATED)
134# BRAZIL 2 H BEHIND UTC ATLANTIC ISLANDS, FERNANDO
135# BRAZIL DE NORONHA
136# BRAZIL 1 H BEHIND UTC OCT 23, '88-FEB 11, '89
137# BRAZIL (ESTIMATED)
138# BRAZIL 3 H BEHIND UTC FOR MOST MAJOR AIRPORTS.
139
140# From Paul Eggert <eggert@twinsun.com> (November 18, 1993):
141# The mayor of Rio recently attempted to change the time zone rules
142# just in his city, in order to leave more summer time for the tourist trade.
143# The rule change lasted only part of the day;
144# the federal government refused to follow the city's rules, and business
145# was in a chaos, so the mayor backed down that afternoon.
146# Shanks claims Acre stopped observing DST after 1988 Feb 7, but it
147# could just be that his table ran out of room. We're extrapolating
148# about time zone changes after 1990 Feb 11.
149
150# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
151Rule Brazil 1914 only - Jan 1 0:00 0 S
152Rule Brazil 1931 only - Oct 3 11:00 1 D
153Rule Brazil 1932 1933 - Apr 1 0:00 0 S
154Rule Brazil 1932 only - Oct 3 0:00 1 D
155Rule Brazil 1949 1952 - Dec 1 0:00 1 D
156Rule Brazil 1950 only - Apr 16 0:00 0 S
157Rule Brazil 1951 1953 - Apr 1 0:00 0 S
158Rule Brazil 1963 only - Dec 9 0:00 1 D
159Rule Brazil 1964 only - Mar 1 0:00 0 S
160Rule Brazil 1965 only - Jan 31 0:00 1 D
161Rule Brazil 1965 only - Apr 1 0:00 0 S
162Rule Brazil 1965 only - Dec 1 0:00 1 D
163Rule Brazil 1966 1968 - Mar 1 0:00 0 S
164Rule Brazil 1966 1967 - Nov 1 0:00 1 D
165Rule Brazil 1985 only - Nov 2 0:00 1 D
166Rule Brazil 1986 only - Mar 15 0:00 0 S
167Rule Brazil 1986 1987 - Oct Sat<=28 0:00 1 D
168Rule Brazil 1987 only - Feb 14 0:00 0 S
169Rule Brazil 1988 only - Feb 7 0:00 0 S
170Rule Brazil 1989 only - Jan 22 0:00 0 S
171Rule Brazil 1988 max - Oct Sun>=15 0:00 1 D
172Rule Brazil 1990 max - Feb Sun>=8 0:00 0 S
173# Zone NAME GMTOFF RULES FORMAT [UNTIL]
174Zone America/Noronha -2:09:40 - LMT 1914
175 -2:00 - FST 1963 Dec 9
176 -2:00 Brazil F%sT
177Zone America/Sao_Paulo -3:06:28 - LMT 1914
178 -3:00 Brazil E%sT
179Zone America/Manaus -4:00:04 - LMT 1914
180 -4:00 - WST 1963 Dec 9
181 -4:00 Brazil W%sT
182# Rio_Branco is too ambiguous, since there's a Rio Branco in Uruguay too.
183Zone America/Porto_Acre -4:31:12 - LMT 1914
184 -5:00 - AST 1963 Dec 9
185 -5:00 Brazil A%sT
186#
187# Martin Vaz and Trinidade are like America/Noronha.
188
189# ZONE-DESCR America Noronha Brazil Fernando De Noronha
190# ZONE-DESCR America Sao_Paulo Brazil Eastern zone
191# ZONE-DESCR America Manaus Brazil Western zone
192# ZONE-DESCR America Porto_Acre Brazil Territory of Acre
193
194# Chile
195
196# From Guy Harris:
197# The OAG lists October 11, 1987 and March 12, 1988 as the starting and
198# ending dates, giving them as "estimated date(s) based on previous year."
199
200# From Bob Devine (January 28, 1988):
201# Chile has had 2nd Sunday in October to 2nd Sunday in March DST since 1977.
202# Switch is at midnight. OAG is right.
203
204# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
205Rule Chile 1918 only - Sep 1 0:00 1:00 D
206Rule Chile 1919 only - Jul 2 0:00 0 S
207Rule Chile 1927 1931 - Sep 1 0:00 1:00 D
208Rule Chile 1928 1932 - Apr 1 0:00 0 S
209Rule Chile 1969 max - Oct Sun>=8 0:00 1:00 D
210Rule Chile 1970 max - Mar Sun>=8 0:00 0 S
211# Zone NAME GMTOFF RULES FORMAT [UNTIL]
212Zone America/Santiago -4:42:40 - LMT 1890
213 -4:43 - SMT 1910 # Santiago Mean Time
214 -5:00 Chile C%sT 1932 Sep
215 -4:00 Chile C%sT
216Zone Pacific/Easter -7:17:28 - LMT 1890 # Mataveri
217 -7:17 - MMT 1932 Sep # Mataveri Mean Time
218 -7:00 Chile M%sT 1982 Mar 14
219 -6:00 Chile C%sT
220#
221# Whitman says Juan Fernandez Is are like America/Santiago.
222# San Ambrosio, San Felix
223# no information; probably like America/Santiago
224
225# ZONE-DESCR America Santiago Chile All points
226# ZONE-DESCR Pacific Easter Easter_Island All points
227
228# Colombia
229# Zone NAME GMTOFF RULES FORMAT [UNTIL]
230Zone America/Bogota -4:56:20 - LMT 1884 Mar 13
231 -4:56 - BMT 1914 Nov 23 # Bogota Mean Time
232 -5:00 - EST
233# Malpelo, Providencia, San Andres
234# no information; probably like America/Bogota
235
236# ZONE-DESCR America Botoga Colombia All points
237
238# Curacao
239# Zone NAME GMTOFF RULES FORMAT [UNTIL]
240Zone America/Curacao -4:35:44 - LMT 1912 Feb 12 # Willemstad
241 -4:30 - NAST 1965 # Netherlands Antilles
242 -4:00 - AST
243
244# ZONE-DESCR America Curacao Curacao All points
245
246# Ecuador
247# Zone NAME GMTOFF RULES FORMAT [UNTIL]
248Zone America/Guayaquil -5:19:20 - LMT 1890
249 -5:14 - QMT 1931 # Quito Mean Time
250 -5:00 - EST
251Zone Pacific/Galapagos -5:58:24 - LMT 1931 # Puerto Baquerizo Moreno
252 -5:00 - EST 1986
253 -6:00 - CST
254
255# ZONE-DESCR America Guayaquil Ecuador All points except:
256# ZONE-DESCR Pacific Galapagos Ecuador Galapagos Islands
257
258# Falklands
259# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
260Rule Falk 1912 only - Mar 12 0:00 0 S
261Rule Falk 1937 1938 - Sep lastSun 0:00 1:00 D
262Rule Falk 1938 1942 - Mar Sun>=19 0:00 0 S
263Rule Falk 1939 only - Oct 1 0:00 1:00 D
264Rule Falk 1940 1942 - Sep lastSun 0:00 1:00 D
265Rule Falk 1943 only - Jan 1 0:00 0 S
266Rule Falk 1983 only - Sep lastSun 0:00 1:00 D
267Rule Falk 1984 1985 - Apr lastSun 0:00 0 S
268Rule Falk 1984 only - Sep 16 0:00 1:00 D
269Rule Falk 1985 max - Sep Sun>=9 0:00 1:00 D
270Rule Falk 1986 max - Apr Sun>=16 0:00 0 S
271# Zone NAME GMTOFF RULES FORMAT [UNTIL]
272Zone Atlantic/Stanley -3:51:24 - LMT 1890
273 -3:51 - SMT 1912 Mar 12 # Stanley Mean Time
274 -4:00 Falk A%sT 1983 May
275 -3:00 Falk E%sT 1985 Sep 15
276 -4:00 Falk A%sT
277
278# ZONE-DESCR Atlantic Stanley Falkland_Islands All points
279
280# French Guiana
281# Zone NAME GMTOFF RULES FORMAT [UNTIL]
282Zone America/Cayenne -3:29:20 - LMT 1911 Jul
283 -4:00 - AST 1967 Oct
284 -3:00 - EST
285
286# ZONE-DESCR America Cayenne French_Guiana All points
287
288# Guyana
289# Zone NAME GMTOFF RULES FORMAT [UNTIL]
290Zone America/Guyana -3:52:40 - LMT 1915 Mar # Georgetown
291 -3:45 - BGST 1975 Jul 31 # British Guiana ST
292 -3:00 - EST
293
294# ZONE-DESCR America Guyana Guyana All points
295
296# Paraguay
297
298# From Bob Devine (January 28, 1988):
299# Paraguay: First day in October to last in March. Midnight switch??
300# Since 1980.
301
302# From U. S. Naval Observatory (January 19, 1989):
303# PARAGUAY 4 H BEHIND UTC
304# PARAGUAY 3 H BEHIND UTC OCT 1, '88-MAR 31, '89
305
306# From Shanks (1991):
307# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
308Rule Para 1974 only - Apr 1 0:00 0 S
309Rule Para 1975 1978 - Oct 1 0:00 1:00 D
310Rule Para 1975 1978 - Mar 1 0:00 0 S
311# Shanks says 1979 was all DST.
312Rule Para 1980 max - Apr 1 0:00 0 S
313Rule Para 1980 1988 - Oct 1 0:00 1:00 D
314Rule Para 1989 only - Oct 22 0:00 1:00 D
315Rule Para 1990 max - Oct 1 0:00 1:00 D
316# Zone NAME GMTOFF RULES FORMAT [UNTIL]
317Zone America/Asuncion -3:50:40 - LMT 1890
318 -3:51 - AMT 1931 Oct 10 # Asuncion Mean Time
319 -4:00 - AST 1972 Oct
320 -3:00 - EST 1974 Apr
321 -4:00 Para A%sT
322
323# ZONE-DESCR America Asuncion Paraguay All points
324
325# Peru
326# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
327Rule Peru 1908 only - Jul 28 0:00 0 S
328Rule Peru 1938 only - Jan 1 0:00 1:00 D
329Rule Peru 1938 only - Apr 1 0:00 0 S
330Rule Peru 1938 1939 - Sep lastSun 0:00 1:00 D
331Rule Peru 1939 1940 - Mar Sun>=24 0:00 0 S
332Rule Peru 1987 only - Jan 1 0:00 1:00 D
333Rule Peru 1987 only - Apr 1 0:00 0 S
334Rule Peru 1990 only - Jan 1 0:00 1:00 D
335Rule Peru 1990 only - Apr 1 0:00 0 S
336# Zone NAME GMTOFF RULES FORMAT [UNTIL]
337Zone America/Lima -5:08:12 - LMT 1890
338 -5:09 - LMT 1908 Jul 28
339 -5:00 Peru E%sT
340
341# ZONE-DESCR America Lima Peru All points
342
343# South Georgia
344# Zone NAME GMTOFF RULES FORMAT [UNTIL]
345Zone Atlantic/South_Georgia -2:26:08 - LMT 1890 # Grytviken
346 -2:00 - FST
347
348# ZONE-DESCR Atlantic South_Georgia South_Georgia All points
349
350# South Sandwich Is
351# no information
352
353# Suriname
354# Zone NAME GMTOFF RULES FORMAT [UNTIL]
355Zone America/Paramaribo -3:40:40 - LMT 1911
356 -3:40:52 - PMT 1935 # Paramaribo Mean Time
357 -3:40:36 - PMT 1945 Oct # The capital moved?
358 -3:30 - DGST 1984 Oct # Dutch Guiana Std Time
359 -3:00 - EST
360
361# ZONE-DESCR America Paramaibo Suriname All points
362
363# Trinidad and Tobago
364# Zone NAME GMTOFF RULES FORMAT [UNTIL]
365Zone America/Port_of_Spain -4:06:04 - LMT 1912 Mar 2
366 -4:00 - AST
367
368# ZONE-DESCR America Port_of_Spain Trinidad_and_Tobago All points
369
370# Uruguay
371# From Paul Eggert <eggert@twinsun.com> (November 18, 1993):
372# Uruguay wins the prize for the strangest peacetime manipulation of the rules.
373# Your guess is as good as mine for what happened after 1989.
374# From Shanks (1991):
375# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
376Rule Uruguay 1920 only - May 1 0:00 0 S
377# Whitman gives 1923 Oct 1; go with Shanks.
378Rule Uruguay 1923 only - Oct 2 0:00 0:30 HD
379Rule Uruguay 1924 1926 - Apr 1 0:00 0 S
380Rule Uruguay 1924 1925 - Oct 1 0:00 0:30 HD
381Rule Uruguay 1933 1935 - Oct lastSun 0:00 0:30 HD
382# Shanks gives 1935 Apr 1 0:00 and 1936 Mar 30 0:00; go with Whitman.
383Rule Uruguay 1934 1936 - Mar Sat>=25 23:30s 0 S
384Rule Uruguay 1936 only - Nov 1 0:00 0:30 HD
385Rule Uruguay 1937 1941 - Mar lastSun 0:00 0 S
386# Whitman gives 1937 Oct 3; go with Shanks.
387Rule Uruguay 1937 1940 - Oct lastSun 0:00 0:30 HD
388# Whitman gives 1941 Oct 24 - 1942 Mar 27, 1942 Dec 14 - 1943 Apr 13,
389# and 1943 Apr 13 ``to present time''; go with Shanks.
390Rule Uruguay 1941 only - Aug 1 0:00 0 S
391Rule Uruguay 1942 only - Jan 1 0:00 0:30 HD
392Rule Uruguay 1942 only - Dec 14 0:00 1:00 D
393Rule Uruguay 1943 only - Mar 14 0:00 0 S
394Rule Uruguay 1959 only - May 24 0:00 1:00 D
395Rule Uruguay 1959 only - Nov 15 0:00 0 S
396Rule Uruguay 1960 only - Jan 17 0:00 1:00 D
397Rule Uruguay 1960 only - Mar 6 0:00 0 S
398Rule Uruguay 1965 1967 - Apr Sun>=1 0:00 1:00 D
399Rule Uruguay 1965 only - Sep 26 0:00 0 S
400Rule Uruguay 1966 1967 - Oct 31 0:00 0 S
401Rule Uruguay 1968 1970 - May 27 0:00 0:30 HD
402Rule Uruguay 1968 1970 - Dec 2 0:00 0 S
403Rule Uruguay 1972 only - Apr 24 0:00 1:00 D
404Rule Uruguay 1972 only - Aug 15 0:00 0 S
405Rule Uruguay 1974 only - Mar 10 0:00 0:30 HD
406Rule Uruguay 1974 only - Dec 22 0:00 1:00 D
407Rule Uruguay 1976 only - Oct 1 0:00 0 S
408Rule Uruguay 1977 only - Dec 4 0:00 1:00 D
409Rule Uruguay 1978 only - Apr 1 0:00 0 S
410Rule Uruguay 1979 only - Oct 1 0:00 1:00 D
411Rule Uruguay 1980 only - May 1 0:00 0 S
412Rule Uruguay 1987 only - Dec 14 0:00 1:00 D
413Rule Uruguay 1988 only - Mar 14 0:00 0 S
414Rule Uruguay 1988 only - Dec 11 0:00 1:00 D
415Rule Uruguay 1989 only - Mar 12 0:00 0 S
416Rule Uruguay 1989 only - Oct 29 0:00 1:00 D
417Rule Uruguay 1990 only - Mar 4 0:00 0 S
418# Zone NAME GMTOFF RULES FORMAT [UNTIL]
419Zone America/Montevideo -3:44:44 - LMT 1898 Jun 28
420 -3:45 - MMT 1920 May 1 # Montevideo MT
421 -3:30 Uruguay U%sT 1942 Dec 14 # Uruguay ST
422 -3:00 Uruguay E%sT
423
424# ZONE-DESCR America Montevideo Uruguay All points
425
426# Venezuela
427# Zone NAME GMTOFF RULES FORMAT [UNTIL]
428Zone America/Caracas -4:27:44 - LMT 1890
429 -4:28 - CMT 1912 Feb 12 # Caracas Mean Time
430 -4:30 - VZT 1965 # Venezuela Time
431 -4:00 - AST
432
433# ZONE-DESCR America Caracas Venezuela All points
| 109
110# ZONE-DESCR America Buenos_Aires Argentina All points
111
112# Bolivia
113# Zone NAME GMTOFF RULES FORMAT [UNTIL]
114Zone America/La_Paz -4:32:36 - LMT 1890
115 -4:33 - LPMT 1931 Oct 15 # La Paz Mean Time
116 -4:33 1:00 LPDT 1932 Mar 21
117 -4:00 - AST
118
119# ZONE-DESCR America La_Paz Bolivia All points
120
121# Brazil
122
123# From Guy Harris:
124# The OAG lists October 25, 1987 and February 12, 1988 as the starting and
125# ending dates, giving them as "estimated date(s) based on previous year". We
126# infer a rule here from one example, always a dangerous practice.... Yes,
127# they really do switch on Saturday, according to the OAG.
128# "Brazil/Acre" is for the Territory of Acre; "Brazil/DeNoronha" is for
129# Fernando De Noronha.
130
131# From Bob Devine (January 28, 1988):
132# The only information I found is that there was no DST up to 1985.
133# But there was some before 1952!
134
135# From U. S. Naval Observatory (January 16, 1989):
136# BRAZIL WEST 5 H BEHIND UTC TERRITORY OF ACRE
137# BRAZIL WEST 4 H BEHIND UTC ACRE OCT 23, '88-FEB 11,
138# BRAZIL '89 (ESTIMATED)
139# BRAZIL CENTRAL 4 H BEHIND UTC MANAUS
140# BRAZIL CENTRAL 3 H BEHIND UTC MANAUS OCT 23, '88-FEB 11,
141# BRAZIL CENTRAL '89 (ESTIMATED)
142# BRAZIL EAST 3 H BEHIND UTC COASTAL STATES, RIO, SAO
143# BRAZIL EAST PAULO, BRASILIA
144# BRAZIL EAST 2 H BEHIND UTC COASTAL STATES, RIO, SAO
145# BRAZIL PAULO, BRASILIA OCT 23,
146# BRAZIL '88-FEB 11, '89
147# BRAZIL (ESTIMATED)
148# BRAZIL 2 H BEHIND UTC ATLANTIC ISLANDS, FERNANDO
149# BRAZIL DE NORONHA
150# BRAZIL 1 H BEHIND UTC OCT 23, '88-FEB 11, '89
151# BRAZIL (ESTIMATED)
152# BRAZIL 3 H BEHIND UTC FOR MOST MAJOR AIRPORTS.
153
154# From Paul Eggert <eggert@twinsun.com> (November 18, 1993):
155# The mayor of Rio recently attempted to change the time zone rules
156# just in his city, in order to leave more summer time for the tourist trade.
157# The rule change lasted only part of the day;
158# the federal government refused to follow the city's rules, and business
159# was in a chaos, so the mayor backed down that afternoon.
160# Shanks claims Acre stopped observing DST after 1988 Feb 7, but it
161# could just be that his table ran out of room. We're extrapolating
162# about time zone changes after 1990 Feb 11.
163
164# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
165Rule Brazil 1914 only - Jan 1 0:00 0 S
166Rule Brazil 1931 only - Oct 3 11:00 1 D
167Rule Brazil 1932 1933 - Apr 1 0:00 0 S
168Rule Brazil 1932 only - Oct 3 0:00 1 D
169Rule Brazil 1949 1952 - Dec 1 0:00 1 D
170Rule Brazil 1950 only - Apr 16 0:00 0 S
171Rule Brazil 1951 1953 - Apr 1 0:00 0 S
172Rule Brazil 1963 only - Dec 9 0:00 1 D
173Rule Brazil 1964 only - Mar 1 0:00 0 S
174Rule Brazil 1965 only - Jan 31 0:00 1 D
175Rule Brazil 1965 only - Apr 1 0:00 0 S
176Rule Brazil 1965 only - Dec 1 0:00 1 D
177Rule Brazil 1966 1968 - Mar 1 0:00 0 S
178Rule Brazil 1966 1967 - Nov 1 0:00 1 D
179Rule Brazil 1985 only - Nov 2 0:00 1 D
180Rule Brazil 1986 only - Mar 15 0:00 0 S
181Rule Brazil 1986 1987 - Oct Sat<=28 0:00 1 D
182Rule Brazil 1987 only - Feb 14 0:00 0 S
183Rule Brazil 1988 only - Feb 7 0:00 0 S
184Rule Brazil 1989 only - Jan 22 0:00 0 S
185Rule Brazil 1988 max - Oct Sun>=15 0:00 1 D
186Rule Brazil 1990 max - Feb Sun>=8 0:00 0 S
187# Zone NAME GMTOFF RULES FORMAT [UNTIL]
188Zone America/Noronha -2:09:40 - LMT 1914
189 -2:00 - FST 1963 Dec 9
190 -2:00 Brazil F%sT
191Zone America/Sao_Paulo -3:06:28 - LMT 1914
192 -3:00 Brazil E%sT
193Zone America/Manaus -4:00:04 - LMT 1914
194 -4:00 - WST 1963 Dec 9
195 -4:00 Brazil W%sT
196# Rio_Branco is too ambiguous, since there's a Rio Branco in Uruguay too.
197Zone America/Porto_Acre -4:31:12 - LMT 1914
198 -5:00 - AST 1963 Dec 9
199 -5:00 Brazil A%sT
200#
201# Martin Vaz and Trinidade are like America/Noronha.
202
203# ZONE-DESCR America Noronha Brazil Fernando De Noronha
204# ZONE-DESCR America Sao_Paulo Brazil Eastern zone
205# ZONE-DESCR America Manaus Brazil Western zone
206# ZONE-DESCR America Porto_Acre Brazil Territory of Acre
207
208# Chile
209
210# From Guy Harris:
211# The OAG lists October 11, 1987 and March 12, 1988 as the starting and
212# ending dates, giving them as "estimated date(s) based on previous year."
213
214# From Bob Devine (January 28, 1988):
215# Chile has had 2nd Sunday in October to 2nd Sunday in March DST since 1977.
216# Switch is at midnight. OAG is right.
217
218# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
219Rule Chile 1918 only - Sep 1 0:00 1:00 D
220Rule Chile 1919 only - Jul 2 0:00 0 S
221Rule Chile 1927 1931 - Sep 1 0:00 1:00 D
222Rule Chile 1928 1932 - Apr 1 0:00 0 S
223Rule Chile 1969 max - Oct Sun>=8 0:00 1:00 D
224Rule Chile 1970 max - Mar Sun>=8 0:00 0 S
225# Zone NAME GMTOFF RULES FORMAT [UNTIL]
226Zone America/Santiago -4:42:40 - LMT 1890
227 -4:43 - SMT 1910 # Santiago Mean Time
228 -5:00 Chile C%sT 1932 Sep
229 -4:00 Chile C%sT
230Zone Pacific/Easter -7:17:28 - LMT 1890 # Mataveri
231 -7:17 - MMT 1932 Sep # Mataveri Mean Time
232 -7:00 Chile M%sT 1982 Mar 14
233 -6:00 Chile C%sT
234#
235# Whitman says Juan Fernandez Is are like America/Santiago.
236# San Ambrosio, San Felix
237# no information; probably like America/Santiago
238
239# ZONE-DESCR America Santiago Chile All points
240# ZONE-DESCR Pacific Easter Easter_Island All points
241
242# Colombia
243# Zone NAME GMTOFF RULES FORMAT [UNTIL]
244Zone America/Bogota -4:56:20 - LMT 1884 Mar 13
245 -4:56 - BMT 1914 Nov 23 # Bogota Mean Time
246 -5:00 - EST
247# Malpelo, Providencia, San Andres
248# no information; probably like America/Bogota
249
250# ZONE-DESCR America Botoga Colombia All points
251
252# Curacao
253# Zone NAME GMTOFF RULES FORMAT [UNTIL]
254Zone America/Curacao -4:35:44 - LMT 1912 Feb 12 # Willemstad
255 -4:30 - NAST 1965 # Netherlands Antilles
256 -4:00 - AST
257
258# ZONE-DESCR America Curacao Curacao All points
259
260# Ecuador
261# Zone NAME GMTOFF RULES FORMAT [UNTIL]
262Zone America/Guayaquil -5:19:20 - LMT 1890
263 -5:14 - QMT 1931 # Quito Mean Time
264 -5:00 - EST
265Zone Pacific/Galapagos -5:58:24 - LMT 1931 # Puerto Baquerizo Moreno
266 -5:00 - EST 1986
267 -6:00 - CST
268
269# ZONE-DESCR America Guayaquil Ecuador All points except:
270# ZONE-DESCR Pacific Galapagos Ecuador Galapagos Islands
271
272# Falklands
273# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
274Rule Falk 1912 only - Mar 12 0:00 0 S
275Rule Falk 1937 1938 - Sep lastSun 0:00 1:00 D
276Rule Falk 1938 1942 - Mar Sun>=19 0:00 0 S
277Rule Falk 1939 only - Oct 1 0:00 1:00 D
278Rule Falk 1940 1942 - Sep lastSun 0:00 1:00 D
279Rule Falk 1943 only - Jan 1 0:00 0 S
280Rule Falk 1983 only - Sep lastSun 0:00 1:00 D
281Rule Falk 1984 1985 - Apr lastSun 0:00 0 S
282Rule Falk 1984 only - Sep 16 0:00 1:00 D
283Rule Falk 1985 max - Sep Sun>=9 0:00 1:00 D
284Rule Falk 1986 max - Apr Sun>=16 0:00 0 S
285# Zone NAME GMTOFF RULES FORMAT [UNTIL]
286Zone Atlantic/Stanley -3:51:24 - LMT 1890
287 -3:51 - SMT 1912 Mar 12 # Stanley Mean Time
288 -4:00 Falk A%sT 1983 May
289 -3:00 Falk E%sT 1985 Sep 15
290 -4:00 Falk A%sT
291
292# ZONE-DESCR Atlantic Stanley Falkland_Islands All points
293
294# French Guiana
295# Zone NAME GMTOFF RULES FORMAT [UNTIL]
296Zone America/Cayenne -3:29:20 - LMT 1911 Jul
297 -4:00 - AST 1967 Oct
298 -3:00 - EST
299
300# ZONE-DESCR America Cayenne French_Guiana All points
301
302# Guyana
303# Zone NAME GMTOFF RULES FORMAT [UNTIL]
304Zone America/Guyana -3:52:40 - LMT 1915 Mar # Georgetown
305 -3:45 - BGST 1975 Jul 31 # British Guiana ST
306 -3:00 - EST
307
308# ZONE-DESCR America Guyana Guyana All points
309
310# Paraguay
311
312# From Bob Devine (January 28, 1988):
313# Paraguay: First day in October to last in March. Midnight switch??
314# Since 1980.
315
316# From U. S. Naval Observatory (January 19, 1989):
317# PARAGUAY 4 H BEHIND UTC
318# PARAGUAY 3 H BEHIND UTC OCT 1, '88-MAR 31, '89
319
320# From Shanks (1991):
321# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
322Rule Para 1974 only - Apr 1 0:00 0 S
323Rule Para 1975 1978 - Oct 1 0:00 1:00 D
324Rule Para 1975 1978 - Mar 1 0:00 0 S
325# Shanks says 1979 was all DST.
326Rule Para 1980 max - Apr 1 0:00 0 S
327Rule Para 1980 1988 - Oct 1 0:00 1:00 D
328Rule Para 1989 only - Oct 22 0:00 1:00 D
329Rule Para 1990 max - Oct 1 0:00 1:00 D
330# Zone NAME GMTOFF RULES FORMAT [UNTIL]
331Zone America/Asuncion -3:50:40 - LMT 1890
332 -3:51 - AMT 1931 Oct 10 # Asuncion Mean Time
333 -4:00 - AST 1972 Oct
334 -3:00 - EST 1974 Apr
335 -4:00 Para A%sT
336
337# ZONE-DESCR America Asuncion Paraguay All points
338
339# Peru
340# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
341Rule Peru 1908 only - Jul 28 0:00 0 S
342Rule Peru 1938 only - Jan 1 0:00 1:00 D
343Rule Peru 1938 only - Apr 1 0:00 0 S
344Rule Peru 1938 1939 - Sep lastSun 0:00 1:00 D
345Rule Peru 1939 1940 - Mar Sun>=24 0:00 0 S
346Rule Peru 1987 only - Jan 1 0:00 1:00 D
347Rule Peru 1987 only - Apr 1 0:00 0 S
348Rule Peru 1990 only - Jan 1 0:00 1:00 D
349Rule Peru 1990 only - Apr 1 0:00 0 S
350# Zone NAME GMTOFF RULES FORMAT [UNTIL]
351Zone America/Lima -5:08:12 - LMT 1890
352 -5:09 - LMT 1908 Jul 28
353 -5:00 Peru E%sT
354
355# ZONE-DESCR America Lima Peru All points
356
357# South Georgia
358# Zone NAME GMTOFF RULES FORMAT [UNTIL]
359Zone Atlantic/South_Georgia -2:26:08 - LMT 1890 # Grytviken
360 -2:00 - FST
361
362# ZONE-DESCR Atlantic South_Georgia South_Georgia All points
363
364# South Sandwich Is
365# no information
366
367# Suriname
368# Zone NAME GMTOFF RULES FORMAT [UNTIL]
369Zone America/Paramaribo -3:40:40 - LMT 1911
370 -3:40:52 - PMT 1935 # Paramaribo Mean Time
371 -3:40:36 - PMT 1945 Oct # The capital moved?
372 -3:30 - DGST 1984 Oct # Dutch Guiana Std Time
373 -3:00 - EST
374
375# ZONE-DESCR America Paramaibo Suriname All points
376
377# Trinidad and Tobago
378# Zone NAME GMTOFF RULES FORMAT [UNTIL]
379Zone America/Port_of_Spain -4:06:04 - LMT 1912 Mar 2
380 -4:00 - AST
381
382# ZONE-DESCR America Port_of_Spain Trinidad_and_Tobago All points
383
384# Uruguay
385# From Paul Eggert <eggert@twinsun.com> (November 18, 1993):
386# Uruguay wins the prize for the strangest peacetime manipulation of the rules.
387# Your guess is as good as mine for what happened after 1989.
388# From Shanks (1991):
389# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
390Rule Uruguay 1920 only - May 1 0:00 0 S
391# Whitman gives 1923 Oct 1; go with Shanks.
392Rule Uruguay 1923 only - Oct 2 0:00 0:30 HD
393Rule Uruguay 1924 1926 - Apr 1 0:00 0 S
394Rule Uruguay 1924 1925 - Oct 1 0:00 0:30 HD
395Rule Uruguay 1933 1935 - Oct lastSun 0:00 0:30 HD
396# Shanks gives 1935 Apr 1 0:00 and 1936 Mar 30 0:00; go with Whitman.
397Rule Uruguay 1934 1936 - Mar Sat>=25 23:30s 0 S
398Rule Uruguay 1936 only - Nov 1 0:00 0:30 HD
399Rule Uruguay 1937 1941 - Mar lastSun 0:00 0 S
400# Whitman gives 1937 Oct 3; go with Shanks.
401Rule Uruguay 1937 1940 - Oct lastSun 0:00 0:30 HD
402# Whitman gives 1941 Oct 24 - 1942 Mar 27, 1942 Dec 14 - 1943 Apr 13,
403# and 1943 Apr 13 ``to present time''; go with Shanks.
404Rule Uruguay 1941 only - Aug 1 0:00 0 S
405Rule Uruguay 1942 only - Jan 1 0:00 0:30 HD
406Rule Uruguay 1942 only - Dec 14 0:00 1:00 D
407Rule Uruguay 1943 only - Mar 14 0:00 0 S
408Rule Uruguay 1959 only - May 24 0:00 1:00 D
409Rule Uruguay 1959 only - Nov 15 0:00 0 S
410Rule Uruguay 1960 only - Jan 17 0:00 1:00 D
411Rule Uruguay 1960 only - Mar 6 0:00 0 S
412Rule Uruguay 1965 1967 - Apr Sun>=1 0:00 1:00 D
413Rule Uruguay 1965 only - Sep 26 0:00 0 S
414Rule Uruguay 1966 1967 - Oct 31 0:00 0 S
415Rule Uruguay 1968 1970 - May 27 0:00 0:30 HD
416Rule Uruguay 1968 1970 - Dec 2 0:00 0 S
417Rule Uruguay 1972 only - Apr 24 0:00 1:00 D
418Rule Uruguay 1972 only - Aug 15 0:00 0 S
419Rule Uruguay 1974 only - Mar 10 0:00 0:30 HD
420Rule Uruguay 1974 only - Dec 22 0:00 1:00 D
421Rule Uruguay 1976 only - Oct 1 0:00 0 S
422Rule Uruguay 1977 only - Dec 4 0:00 1:00 D
423Rule Uruguay 1978 only - Apr 1 0:00 0 S
424Rule Uruguay 1979 only - Oct 1 0:00 1:00 D
425Rule Uruguay 1980 only - May 1 0:00 0 S
426Rule Uruguay 1987 only - Dec 14 0:00 1:00 D
427Rule Uruguay 1988 only - Mar 14 0:00 0 S
428Rule Uruguay 1988 only - Dec 11 0:00 1:00 D
429Rule Uruguay 1989 only - Mar 12 0:00 0 S
430Rule Uruguay 1989 only - Oct 29 0:00 1:00 D
431Rule Uruguay 1990 only - Mar 4 0:00 0 S
432# Zone NAME GMTOFF RULES FORMAT [UNTIL]
433Zone America/Montevideo -3:44:44 - LMT 1898 Jun 28
434 -3:45 - MMT 1920 May 1 # Montevideo MT
435 -3:30 Uruguay U%sT 1942 Dec 14 # Uruguay ST
436 -3:00 Uruguay E%sT
437
438# ZONE-DESCR America Montevideo Uruguay All points
439
440# Venezuela
441# Zone NAME GMTOFF RULES FORMAT [UNTIL]
442Zone America/Caracas -4:27:44 - LMT 1890
443 -4:28 - CMT 1912 Feb 12 # Caracas Mean Time
444 -4:30 - VZT 1965 # Venezuela Time
445 -4:00 - AST
446
447# ZONE-DESCR America Caracas Venezuela All points
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