Deleted Added
sdiff udiff text old ( 19878 ) new ( 20094 )
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southamerica (19878) southamerica (20094)
1# @(#)southamerica 7.14
1# @(#)southamerica 7.15
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
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> (1996-09-03):
7# From Paul Eggert <eggert@twinsun.com> (1996-11-22):
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).
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#
11#
12# Gwillim Law <LAW@encmail.encompass.com> writes that a good source
13# for recent time zone data is the International Air Transport
14# Association's Standard Schedules Information Manual (IATA SSIM),
15# published semiannually. Law sent in several helpful summaries
16# of the IATA's data after 1990.
17#
18# Except where otherwise noted, Shanks is the source for entries through 1990,
19# and IATA SSIM is the source for entries after 1990.
20#
13# The following abbreviations are used in this file.
14# Corrections are welcome!
15# std dst
16# LMT Local Mean Time
17# -2:00 FST FDT Fernando de Noronha
18# -3:00 EST EDT Eastern Brazil
19# -4:00 WST WDT Western Brazil
20# -4:00 AST ADT Atlantic

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98Rule Arg 1989 1992 - Oct Sun>=15 0:00 1:00 S
99#
100# From Hernan G. Otero <hernan@isoft.com.ar> (1995-06-26):
101# From this moment on, the law that mandated the daylight saving
102# time corrections was derogated and no more modifications
103# to the time zones (for daylight saving) are now made.
104#
105# Zone NAME GMTOFF RULES FORMAT [UNTIL]
21# The following abbreviations are used in this file.
22# Corrections are welcome!
23# std dst
24# LMT Local Mean Time
25# -2:00 FST FDT Fernando de Noronha
26# -3:00 EST EDT Eastern Brazil
27# -4:00 WST WDT Western Brazil
28# -4:00 AST ADT Atlantic

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106Rule Arg 1989 1992 - Oct Sun>=15 0:00 1:00 S
107#
108# From Hernan G. Otero <hernan@isoft.com.ar> (1995-06-26):
109# From this moment on, the law that mandated the daylight saving
110# time corrections was derogated and no more modifications
111# to the time zones (for daylight saving) are now made.
112#
113# Zone NAME GMTOFF RULES FORMAT [UNTIL]
114#
115# Buenos Aires (BA), Distrito Federal (DF), Santa Cruz (SC),
116# Tierra del Fuego (TF) & Antartida e Islas
106Zone America/Buenos_Aires -3:53:48 - LMT 1894 Nov
107 -4:16:44 - CMT 1920 May # Cordoba Mean Time
108 -4:00 - ART 1930 Dec
109 -4:00 Arg AR%sT 1969 Oct 5
110 -3:00 Arg AR%sT
117Zone America/Buenos_Aires -3:53:48 - LMT 1894 Nov
118 -4:16:44 - CMT 1920 May # Cordoba Mean Time
119 -4:00 - ART 1930 Dec
120 -4:00 Arg AR%sT 1969 Oct 5
121 -3:00 Arg AR%sT
122#
123# Santa Fe (SF), Entre Rios (ER), Corrientes (CN), Misiones (MN), Chaco (CC),
124# Formosa (FM), La Pampa (LP), Chubut (CH)
125Zone America/Rosario -4:02:40 - LMT 1894 Nov
126 -4:16:44 - CMT 1920 May
127 -4:00 - ART 1930 Dec
128 -4:00 Arg AR%sT 1969 Oct 5
129 -3:00 Arg AR%sT 1991 Jul
130 -3:00 - ART
131#
132# Cordoba (CB), Santiago del Estero (SE), Salta (SA), Tucuman (TM), La Rioja (LR), San Juan (SJ), San Luis (SL),
133# Neuquen (NQ), Rio Negro (RN)
134Zone America/Cordoba -4:16:44 - LMT 1894 Nov
135 -4:16:44 - CMT 1920 May
136 -4:00 - ART 1930 Dec
137 -4:00 Arg AR%sT 1969 Oct 5
138 -3:00 Arg AR%sT 1990 Jul
139 -3:00 - ART
140#
141# Jujuy (JY)
142Zone America/Jujuy -4:21:12 - LMT 1894 Nov
143 -4:16:44 - CMT 1920 May
144 -4:00 - ART 1930 Dec
145 -4:00 Arg AR%sT 1969 Oct 5
146 -3:00 Arg AR%sT 1991 Mar 3
147 -4:00 - WART 1991 Oct 6
148 -4:00 1:00 WARST 1992 Mar 15
149 -4:00 - WART 1992 Oct 18
150 -3:00 - ART
151#
152# Catamarca (CT)
153Zone America/Catamarca -4:23:08 - LMT 1894 Nov
154 -4:16:44 - CMT 1920 May
155 -4:00 - ART 1930 Dec
156 -4:00 Arg AR%sT 1969 Oct 5
157 -3:00 Arg AR%sT 1990 Jul
158 -3:00 - ART 1991 Jul
159 -3:00 Arg AR%sT 1992 Jul
160 -3:00 - ART
161#
162# Mendoza (MZ)
163Zone America/Mendoza -4:35:16 - LMT 1894 Nov
164 -4:16:44 - CMT 1920 May
165 -4:00 - ART 1930 Dec
166 -4:00 Arg AR%sT 1969 Oct 5
167 -3:00 Arg AR%sT 1991 Mar 3
168 -4:00 - WART 1991 Oct 15
169 -4:00 1:00 WARST 1992 Mar 1
170 -4:00 - WART 1992 Oct 18
171 -3:00 - ART
111
112# Aruba
113# Zone NAME GMTOFF RULES FORMAT [UNTIL]
114Zone America/Aruba -4:40:24 - LMT 1912 Feb 12 # Oranjestad
115 -4:30 - ANT 1965 # Netherlands Antilles Time
116 -4:00 - AST
117
118# Bolivia

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127# From Guy Harris:
128# The OAG lists 1987-10-25 and 1988-02-12 as the starting and
129# ending dates, giving them as "estimated date(s) based on previous year". We
130# infer a rule here from one example, always a dangerous practice.... Yes,
131# they really do switch on Saturday, according to the OAG.
132# "[America/Porto_Acre]" is for the Territory of Acre;
133# "[America/Noronha]" is for Fernando De Noronha.
134
172
173# Aruba
174# Zone NAME GMTOFF RULES FORMAT [UNTIL]
175Zone America/Aruba -4:40:24 - LMT 1912 Feb 12 # Oranjestad
176 -4:30 - ANT 1965 # Netherlands Antilles Time
177 -4:00 - AST
178
179# Bolivia

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188# From Guy Harris:
189# The OAG lists 1987-10-25 and 1988-02-12 as the starting and
190# ending dates, giving them as "estimated date(s) based on previous year". We
191# infer a rule here from one example, always a dangerous practice.... Yes,
192# they really do switch on Saturday, according to the OAG.
193# "[America/Porto_Acre]" is for the Territory of Acre;
194# "[America/Noronha]" is for Fernando De Noronha.
195
135# From Bob Devine (1988-01-28):
136# The only information I found is that there was no DST up to 1985.
137# But there was some before 1952!
138
139# From U. S. Naval Observatory (1989-01-16):
140# BRAZIL WEST 5 H BEHIND UTC TERRITORY OF ACRE
141# BRAZIL WEST 4 H BEHIND UTC ACRE OCT 23, '88-FEB 11,
142# BRAZIL '89 (ESTIMATED)
143# BRAZIL CENTRAL 4 H BEHIND UTC MANAUS
144# BRAZIL CENTRAL 3 H BEHIND UTC MANAUS OCT 23, '88-FEB 11,
145# BRAZIL CENTRAL '89 (ESTIMATED)
146# BRAZIL EAST 3 H BEHIND UTC COASTAL STATES, RIO, SAO
147# BRAZIL EAST PAULO, BRASILIA
148# BRAZIL EAST 2 H BEHIND UTC COASTAL STATES, RIO, SAO
149# BRAZIL PAULO, BRASILIA OCT 23,
150# BRAZIL '88-FEB 11, '89
151# BRAZIL (ESTIMATED)
152# BRAZIL 2 H BEHIND UTC ATLANTIC ISLANDS, FERNANDO
153# BRAZIL DE NORONHA
154# BRAZIL 1 H BEHIND UTC OCT 23, '88-FEB 11, '89
155# BRAZIL (ESTIMATED)
156# BRAZIL 3 H BEHIND UTC FOR MOST MAJOR AIRPORTS.
157
158# From Paul Eggert <eggert@twinsun.com> (1993-11-18):
159# The mayor of Rio recently attempted to change the time zone rules
160# just in his city, in order to leave more summer time for the tourist trade.
161# The rule change lasted only part of the day;
162# the federal government refused to follow the city's rules, and business
163# was in a chaos, so the mayor backed down that afternoon.
196# From Paul Eggert <eggert@twinsun.com> (1993-11-18):
197# The mayor of Rio recently attempted to change the time zone rules
198# just in his city, in order to leave more summer time for the tourist trade.
199# The rule change lasted only part of the day;
200# the federal government refused to follow the city's rules, and business
201# was in a chaos, so the mayor backed down that afternoon.
164# Shanks claims Acre stopped observing DST after 1988 Feb 7, but it
165# could just be that his table ran out of room. We're extrapolating
166# about time zone changes after 1990 Feb 11.
167
202
203# From IATA SSIM (1996-02):
204# _Only_ the following states in BR1 observe DST: Rio Grande do Sul (RS),
205# Santa Catarina (SC), Parana (PR), Sao Paulo (SP), Rio de Janeiro (RJ),
206# Espirito Santo (ES), Minas Gerais (MG), Bahia (BA), Goias (GO),
207# Distrito Federal (DF), Tocantins (TO), Sergipe [SE] and Alagoas [AL].
208# [The last three states are new to this issue of the IATA SSIM.]
209
210# From Gwillim Law (1996-10-07):
211# Geography, history (Tocantins was part of Goias until 1989), and other
212# sources of time zone information lead me to believe that AL, SE, and TO were
213# always in BR1, and so the only change was whether or not they observed DST....
214# The earliest issue of the SSIM I have is 2/91. Each issue from then until
215# 9/95 says that DST is observed only in the ten states I quoted from 9/95,
216# along with Mato Grosso (MT) and Mato Grosso do Sul (MS), which are in BR2
217# (UTC-4).... The other two time zones given for Brazil are BR3, which is
218# UTC-5, no DST, and applies only in the state of Acre (AC); and BR4, which is
219# UTC-2, and applies to Fernando de Noronha (formerly FN, but I believe it's
220# become part of the state of Pernambuco). The boundary between BR1 and BR2
221# has never been clearly stated. They've simply been called East and West.
222# However, some conclusions can be drawn from another IATA manual: the Airline
223# Coding Directory, which lists close to 400 airports in Brazil. For each
224# airport it gives a time zone which is coded to the SSIM. From that
225# information, I'm led to conclude that the states of Amapa (AP), Ceara (CE),
226# Maranhao (MA), Paraiba (PR), Pernambuco (PE), Piaui (PI), and Rio Grande do
227# Norte (RN), and the eastern part of Para (PA) are all in BR1 without DST.
228
229# From Paul Eggert (1996-11-22):
230# Let's make the following assumptions:
231#
232# * All data in Shanks are correct through 1990. In particular,
233# Shanks was right when he said Acre stopped observing DST in mid-1988.
234# * Areas where Shanks reports DST up to 1990, but the IATA reports no DST
235# in 1995, stopped observing DST in mid-1990.
236#
237# Under these assumptions Brazil needs 7 entries to cover all the distinct
238# time zone histories since 1970:
239#
240# Noronha (UTC-2), Fortaleza (UTC-3), and Manaus (UTC-4) stopped observing DST
241# in mid-1990.
242# Maceio (UTC-3) stopped observing DST in mid-1990, but started again mid-1995.
243# Sao Paulo (UTC-3) and Cuiaba (UTC-4) always observed DST.
244# Porto Acre (UTC-5) stopped observing DST in mid-1988.
245
168# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
169Rule Brazil 1931 only - Oct 3 11:00 1:00 D
170Rule Brazil 1932 1933 - Apr 1 0:00 0 S
171Rule Brazil 1932 only - Oct 3 0:00 1:00 D
172Rule Brazil 1949 1952 - Dec 1 0:00 1:00 D
173Rule Brazil 1950 only - Apr 16 0:00 0 S
174Rule Brazil 1951 1953 - Apr 1 0:00 0 S
175Rule Brazil 1963 only - Dec 9 0:00 1:00 D

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180Rule Brazil 1966 1968 - Mar 1 0:00 0 S
181Rule Brazil 1966 1967 - Nov 1 0:00 1:00 D
182Rule Brazil 1985 only - Nov 2 0:00 1:00 D
183Rule Brazil 1986 only - Mar 15 0:00 0 S
184Rule Brazil 1986 1987 - Oct Sat<=28 0:00 1:00 D
185Rule Brazil 1987 only - Feb 14 0:00 0 S
186Rule Brazil 1988 only - Feb 7 0:00 0 S
187Rule Brazil 1989 only - Jan 22 0:00 0 S
246# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
247Rule Brazil 1931 only - Oct 3 11:00 1:00 D
248Rule Brazil 1932 1933 - Apr 1 0:00 0 S
249Rule Brazil 1932 only - Oct 3 0:00 1:00 D
250Rule Brazil 1949 1952 - Dec 1 0:00 1:00 D
251Rule Brazil 1950 only - Apr 16 0:00 0 S
252Rule Brazil 1951 1953 - Apr 1 0:00 0 S
253Rule Brazil 1963 only - Dec 9 0:00 1:00 D

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258Rule Brazil 1966 1968 - Mar 1 0:00 0 S
259Rule Brazil 1966 1967 - Nov 1 0:00 1:00 D
260Rule Brazil 1985 only - Nov 2 0:00 1:00 D
261Rule Brazil 1986 only - Mar 15 0:00 0 S
262Rule Brazil 1986 1987 - Oct Sat<=28 0:00 1:00 D
263Rule Brazil 1987 only - Feb 14 0:00 0 S
264Rule Brazil 1988 only - Feb 7 0:00 0 S
265Rule Brazil 1989 only - Jan 22 0:00 0 S
188Rule Brazil 1988 max - Oct Sun>=15 0:00 1:00 D
189Rule Brazil 1990 max - Feb Sun>=8 0:00 0 S
266Rule Brazil 1988 1989 - Oct Sun>=10 0:00 1:00 D
267Rule Brazil 1990 1991 - Feb Sun>=11 0:00 0 S
268Rule Brazil 1990 1992 - Oct Sun>=20 0:00 1:00 D
269Rule Brazil 1992 only - Feb 9 0:00 0 S
270Rule Brazil 1993 max - Oct Sun>=11 0:00 1:00 D
271Rule Brazil 1993 only - Jan 31 0:00 0 S
272Rule Brazil 1994 1995 - Feb Sun>=15 0:00 0 S
273Rule Brazil 1996 max - Feb Sun>=11 0:00 0 S
274
190# Zone NAME GMTOFF RULES FORMAT [UNTIL]
275# Zone NAME GMTOFF RULES FORMAT [UNTIL]
276#
277# Fernando de Noronha
191Zone America/Noronha -2:09:40 - LMT 1914
192 -2:00 - FST 1963 Dec 9
278Zone America/Noronha -2:09:40 - LMT 1914
279 -2:00 - FST 1963 Dec 9
193 -2:00 Brazil F%sT
280 -2:00 Brazil F%sT 1990 Jul
281 -2:00 - FST
282#
283# Amapa, east Para, Maranhao, Piaui, Ceara, Rio Grande do Norte, Paraiba,
284# Pernambuco (except Fernando de Noronha)
285Zone America/Fortaleza -2:34:00 - LMT 1914
286 -3:00 - EST 1963 Dec 9
287 -3:00 Brazil E%sT 1990 Jul
288 -3:00 - EST
289#
290# Alagoas, Sergipe, Tocantins
291Zone America/Maceio -2:22:52 - LMT 1914
292 -3:00 - EST 1963 Dec 9
293 -3:00 Brazil E%sT 1990 Jul
294 -3:00 - EST 1995 Jul
295 -3:00 Brazil E%sT
296#
297# Bahia, Goias, Distrito Federal, Minas Gerais, Espirito Santo, Rio de Janeiro,
298# Sao Paulo, Parana, Santa Catarina, Rio Grande do Sul
194Zone America/Sao_Paulo -3:06:28 - LMT 1914
195 -3:00 Brazil E%sT
299Zone America/Sao_Paulo -3:06:28 - LMT 1914
300 -3:00 Brazil E%sT
196Zone America/Manaus -4:00:04 - LMT 1914
301#
302# Mato Grosso, Mato Grosso do Sul
303Zone America/Cuiaba -3:44:20 - LMT 1914
197 -4:00 - WST 1963 Dec 9
198 -4:00 Brazil W%sT
304 -4:00 - WST 1963 Dec 9
305 -4:00 Brazil W%sT
306#
307# Roraima, west Para, Amazonas, Rondonia
308Zone America/Manaus -4:00:04 - LMT 1914
309 -4:00 - WST 1963 Dec 9
310 -4:00 Brazil W%sT 1990 Jul
311 -4:00 - WST
312#
313# Acre
199# Rio_Branco is too ambiguous, since there's a Rio Branco in Uruguay too.
200Zone America/Porto_Acre -4:31:12 - LMT 1914
201 -5:00 - AST 1963 Dec 9
314# Rio_Branco is too ambiguous, since there's a Rio Branco in Uruguay too.
315Zone America/Porto_Acre -4:31:12 - LMT 1914
316 -5:00 - AST 1963 Dec 9
202 -5:00 Brazil A%sT
317 -5:00 Brazil A%sT 1988 Jul
318 -5:00 - AST
203#
204# Martin Vaz and Trinidade are like America/Noronha.
205
206
207# Chile
208
209# From Eduardo Krell (1995-10-19):
210# The law says to switch to DST at midnight [24:00] on the second SATURDAY
211# of October.... The law is the same for March and October.
212
213# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
214Rule Chile 1918 only - Sep 1 0:00 1:00 S
215Rule Chile 1919 only - Jul 2 0:00 0 -
216Rule Chile 1927 1931 - Sep 1 0:00 1:00 S
217Rule Chile 1928 1932 - Apr 1 0:00 0 -
218Rule Chile 1969 max - Oct Sun>=9 0:00 1:00 S
219Rule Chile 1970 max - Mar Sun>=9 0:00 0 -
319#
320# Martin Vaz and Trinidade are like America/Noronha.
321
322
323# Chile
324
325# From Eduardo Krell (1995-10-19):
326# The law says to switch to DST at midnight [24:00] on the second SATURDAY
327# of October.... The law is the same for March and October.
328
329# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
330Rule Chile 1918 only - Sep 1 0:00 1:00 S
331Rule Chile 1919 only - Jul 2 0:00 0 -
332Rule Chile 1927 1931 - Sep 1 0:00 1:00 S
333Rule Chile 1928 1932 - Apr 1 0:00 0 -
334Rule Chile 1969 max - Oct Sun>=9 0:00 1:00 S
335Rule Chile 1970 max - Mar Sun>=9 0:00 0 -
336# IATA SSIM anomalies: (1990-09) says 1990-09-16; (1992-02) says 1992-03-14;
337# (1996-09) says 1998-03-08. Ignore these for now.
220# Zone NAME GMTOFF RULES FORMAT [UNTIL]
221Zone America/Santiago -4:42:40 - LMT 1890
222 -4:42:40 - SMT 1910 # Santiago Mean Time
223 -5:00 Chile CL%sT 1932 Sep # Chile Time
224 -4:00 Chile CL%sT
225Zone Pacific/Easter -7:17:28 - LMT 1890 # Mataveri
226 -7:17:28 - MMT 1932 Sep # Mataveri Mean Time
227 -7:00 Chile EAS%sT 1982 Mar 14 # Easter I Time
228 -6:00 Chile EAS%sT
229#
230# Whitman says Juan Fernandez Is are like America/Santiago.
231# San Ambrosio, San Felix
232# no information; probably like America/Santiago
233
234
235# Colombia
338# Zone NAME GMTOFF RULES FORMAT [UNTIL]
339Zone America/Santiago -4:42:40 - LMT 1890
340 -4:42:40 - SMT 1910 # Santiago Mean Time
341 -5:00 Chile CL%sT 1932 Sep # Chile Time
342 -4:00 Chile CL%sT
343Zone Pacific/Easter -7:17:28 - LMT 1890 # Mataveri
344 -7:17:28 - MMT 1932 Sep # Mataveri Mean Time
345 -7:00 Chile EAS%sT 1982 Mar 14 # Easter I Time
346 -6:00 Chile EAS%sT
347#
348# Whitman says Juan Fernandez Is are like America/Santiago.
349# San Ambrosio, San Felix
350# no information; probably like America/Santiago
351
352
353# Colombia
354# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
355Rule CO 1992 only - May 2 0:00 1:00 S
356Rule CO 1992 only - Dec 31 0:00 0 -
236# Zone NAME GMTOFF RULES FORMAT [UNTIL]
237Zone America/Bogota -4:56:20 - LMT 1884 Mar 13
238 -4:56:20 - BMT 1914 Nov 23 # Bogota Mean Time
357# Zone NAME GMTOFF RULES FORMAT [UNTIL]
358Zone America/Bogota -4:56:20 - LMT 1884 Mar 13
359 -4:56:20 - BMT 1914 Nov 23 # Bogota Mean Time
239 -5:00 - COT # Colombia Time
360 -5:00 CO CO%sT # Colombia Time
240# Malpelo, Providencia, San Andres
241# no information; probably like America/Bogota
242
243# Curacao
244# Zone NAME GMTOFF RULES FORMAT [UNTIL]
245Zone America/Curacao -4:35:44 - LMT 1912 Feb 12 # Willemstad
246 -4:30 - ANT 1965 # Netherlands Antilles Time
247 -4:00 - AST

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260Rule Falk 1937 1938 - Sep lastSun 0:00 1:00 S
261Rule Falk 1938 1942 - Mar Sun>=19 0:00 0 -
262Rule Falk 1939 only - Oct 1 0:00 1:00 S
263Rule Falk 1940 1942 - Sep lastSun 0:00 1:00 S
264Rule Falk 1943 only - Jan 1 0:00 0 -
265Rule Falk 1983 only - Sep lastSun 0:00 1:00 S
266Rule Falk 1984 1985 - Apr lastSun 0:00 0 -
267Rule Falk 1984 only - Sep 16 0:00 1:00 S
361# Malpelo, Providencia, San Andres
362# no information; probably like America/Bogota
363
364# Curacao
365# Zone NAME GMTOFF RULES FORMAT [UNTIL]
366Zone America/Curacao -4:35:44 - LMT 1912 Feb 12 # Willemstad
367 -4:30 - ANT 1965 # Netherlands Antilles Time
368 -4:00 - AST

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381Rule Falk 1937 1938 - Sep lastSun 0:00 1:00 S
382Rule Falk 1938 1942 - Mar Sun>=19 0:00 0 -
383Rule Falk 1939 only - Oct 1 0:00 1:00 S
384Rule Falk 1940 1942 - Sep lastSun 0:00 1:00 S
385Rule Falk 1943 only - Jan 1 0:00 0 -
386Rule Falk 1983 only - Sep lastSun 0:00 1:00 S
387Rule Falk 1984 1985 - Apr lastSun 0:00 0 -
388Rule Falk 1984 only - Sep 16 0:00 1:00 S
268Rule Falk 1985 max - Sep Sun>=9 0:00 1:00 S
389Rule Falk 1985 1995 - Sep Sun>=9 0:00 1:00 S
269Rule Falk 1986 max - Apr Sun>=16 0:00 0 -
390Rule Falk 1986 max - Apr Sun>=16 0:00 0 -
391Rule Falk 1996 max - Sep Sun>=8 0:00 1:00 S
270# Zone NAME GMTOFF RULES FORMAT [UNTIL]
271Zone Atlantic/Stanley -3:51:24 - LMT 1890
272 -3:51:24 - SMT 1912 Mar 12 # Stanley Mean Time
273 -4:00 Falk FK%sT 1983 May # Falkland Is Time
274 -3:00 Falk FK%sT 1985 Sep 15
275 -4:00 Falk FK%sT
276
277# French Guiana
278# Zone NAME GMTOFF RULES FORMAT [UNTIL]
279Zone America/Cayenne -3:29:20 - LMT 1911 Jul
280 -4:00 - GFT 1967 Oct # French Guiana Time
281 -3:00 - GFT
282
283# Guyana
284# Zone NAME GMTOFF RULES FORMAT [UNTIL]
285Zone America/Guyana -3:52:40 - LMT 1915 Mar # Georgetown
286 -3:45 - GBGT 1966 May 26 # Br Guiana Time
287 -3:45 - GYT 1975 Jul 31 # Guyana Time
392# Zone NAME GMTOFF RULES FORMAT [UNTIL]
393Zone Atlantic/Stanley -3:51:24 - LMT 1890
394 -3:51:24 - SMT 1912 Mar 12 # Stanley Mean Time
395 -4:00 Falk FK%sT 1983 May # Falkland Is Time
396 -3:00 Falk FK%sT 1985 Sep 15
397 -4:00 Falk FK%sT
398
399# French Guiana
400# Zone NAME GMTOFF RULES FORMAT [UNTIL]
401Zone America/Cayenne -3:29:20 - LMT 1911 Jul
402 -4:00 - GFT 1967 Oct # French Guiana Time
403 -3:00 - GFT
404
405# Guyana
406# Zone NAME GMTOFF RULES FORMAT [UNTIL]
407Zone America/Guyana -3:52:40 - LMT 1915 Mar # Georgetown
408 -3:45 - GBGT 1966 May 26 # Br Guiana Time
409 -3:45 - GYT 1975 Jul 31 # Guyana Time
288 -3:00 - GYT
410 -3:00 - GYT 1991
411# IATA SSIM (1996-06) says -4:00. Assume a 1991 switch.
412 -4:00 - GYT
289
413
290
291# Paraguay
292
293# From Bob Devine (1988-01-28):
294# Paraguay: First day in October to last in March. Midnight switch??
295# Since 1980.
296
297# From U. S. Naval Observatory (1989-01-19):
298# PARAGUAY 4 H BEHIND UTC
299# PARAGUAY 3 H BEHIND UTC OCT 1, '88-MAR 31, '89
300
301# From Shanks (1991):
302# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
303Rule Para 1975 1978 - Oct 1 0:00 1:00 S
304Rule Para 1975 1978 - Mar 1 0:00 0 -
305# Shanks says 1979 was all DST.
414# Paraguay
415
416# From Bob Devine (1988-01-28):
417# Paraguay: First day in October to last in March. Midnight switch??
418# Since 1980.
419
420# From U. S. Naval Observatory (1989-01-19):
421# PARAGUAY 4 H BEHIND UTC
422# PARAGUAY 3 H BEHIND UTC OCT 1, '88-MAR 31, '89
423
424# From Shanks (1991):
425# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
426Rule Para 1975 1978 - Oct 1 0:00 1:00 S
427Rule Para 1975 1978 - Mar 1 0:00 0 -
428# Shanks says 1979 was all DST.
306Rule Para 1980 max - Apr 1 0:00 0 -
429Rule Para 1980 1991 - Apr 1 0:00 0 -
307Rule Para 1980 1988 - Oct 1 0:00 1:00 S
308Rule Para 1989 only - Oct 22 0:00 1:00 S
430Rule Para 1980 1988 - Oct 1 0:00 1:00 S
431Rule Para 1989 only - Oct 22 0:00 1:00 S
309Rule Para 1990 max - Oct 1 0:00 1:00 S
432Rule Para 1990 only - Oct 1 0:00 1:00 S
433Rule Para 1991 only - Oct 6 0:00 1:00 S
434Rule Para 1992 only - Mar 1 0:00 0 -
435Rule Para 1992 only - Oct 5 0:00 1:00 S
436Rule Para 1993 only - Mar 31 0:00 0 -
437Rule Para 1993 max - Oct 1 0:00 1:00 S
438Rule Para 1994 1995 - Feb lastSun 0:00 0 -
439Rule Para 1996 max - Mar 1 0:00 0 -
310# Zone NAME GMTOFF RULES FORMAT [UNTIL]
311Zone America/Asuncion -3:50:40 - LMT 1890
312 -3:50:40 - AMT 1931 Oct 10 # Asuncion Mean Time
313 -4:00 - PYT 1972 Oct # Paraguay Time
314 -3:00 - PYT 1974 Apr
315 -4:00 Para PY%sT
316
317# Peru
318# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
319Rule Peru 1938 only - Jan 1 0:00 1:00 S
320Rule Peru 1938 only - Apr 1 0:00 0 -
321Rule Peru 1938 1939 - Sep lastSun 0:00 1:00 S
322Rule Peru 1939 1940 - Mar Sun>=24 0:00 0 -
323Rule Peru 1987 only - Jan 1 0:00 1:00 S
324Rule Peru 1987 only - Apr 1 0:00 0 -
325Rule Peru 1990 only - Jan 1 0:00 1:00 S
326Rule Peru 1990 only - Apr 1 0:00 0 -
440# Zone NAME GMTOFF RULES FORMAT [UNTIL]
441Zone America/Asuncion -3:50:40 - LMT 1890
442 -3:50:40 - AMT 1931 Oct 10 # Asuncion Mean Time
443 -4:00 - PYT 1972 Oct # Paraguay Time
444 -3:00 - PYT 1974 Apr
445 -4:00 Para PY%sT
446
447# Peru
448# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
449Rule Peru 1938 only - Jan 1 0:00 1:00 S
450Rule Peru 1938 only - Apr 1 0:00 0 -
451Rule Peru 1938 1939 - Sep lastSun 0:00 1:00 S
452Rule Peru 1939 1940 - Mar Sun>=24 0:00 0 -
453Rule Peru 1987 only - Jan 1 0:00 1:00 S
454Rule Peru 1987 only - Apr 1 0:00 0 -
455Rule Peru 1990 only - Jan 1 0:00 1:00 S
456Rule Peru 1990 only - Apr 1 0:00 0 -
457Rule Peru 1993 only - Jan 1 0:00 1:00 S
458Rule Peru 1993 only - Apr 1 0:00 0 -
327# Zone NAME GMTOFF RULES FORMAT [UNTIL]
328Zone America/Lima -5:08:12 - LMT 1890
329 -5:09 - LMT 1908 Jul 28 # Lima Mean Time
330 -5:00 Peru PE%sT # Peru Time
331
332# South Georgia
333# Zone NAME GMTOFF RULES FORMAT [UNTIL]
334Zone Atlantic/South_Georgia -2:26:08 - LMT 1890 # Grytviken

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391Rule Uruguay 1978 only - Apr 1 0:00 0 -
392Rule Uruguay 1979 only - Oct 1 0:00 1:00 S
393Rule Uruguay 1980 only - May 1 0:00 0 -
394Rule Uruguay 1987 only - Dec 14 0:00 1:00 S
395Rule Uruguay 1988 only - Mar 14 0:00 0 -
396Rule Uruguay 1988 only - Dec 11 0:00 1:00 S
397Rule Uruguay 1989 only - Mar 12 0:00 0 -
398Rule Uruguay 1989 only - Oct 29 0:00 1:00 S
459# Zone NAME GMTOFF RULES FORMAT [UNTIL]
460Zone America/Lima -5:08:12 - LMT 1890
461 -5:09 - LMT 1908 Jul 28 # Lima Mean Time
462 -5:00 Peru PE%sT # Peru Time
463
464# South Georgia
465# Zone NAME GMTOFF RULES FORMAT [UNTIL]
466Zone Atlantic/South_Georgia -2:26:08 - LMT 1890 # Grytviken

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

523Rule Uruguay 1978 only - Apr 1 0:00 0 -
524Rule Uruguay 1979 only - Oct 1 0:00 1:00 S
525Rule Uruguay 1980 only - May 1 0:00 0 -
526Rule Uruguay 1987 only - Dec 14 0:00 1:00 S
527Rule Uruguay 1988 only - Mar 14 0:00 0 -
528Rule Uruguay 1988 only - Dec 11 0:00 1:00 S
529Rule Uruguay 1989 only - Mar 12 0:00 0 -
530Rule Uruguay 1989 only - Oct 29 0:00 1:00 S
399Rule Uruguay 1990 only - Mar 4 0:00 0 -
531Rule Uruguay 1990 1992 - Mar Sun>=1 0:00 0 -
532Rule Uruguay 1990 1991 - Oct Sun>=21 0:00 1:00 S
533Rule Uruguay 1992 1993 - Oct Sun>=15 0:00 1:00 S
534Rule Uruguay 1993 only - Feb 28 0:00 0 -
400# Zone NAME GMTOFF RULES FORMAT [UNTIL]
401Zone America/Montevideo -3:44:44 - LMT 1898 Jun 28
402 -3:44:44 - MMT 1920 May 1 # Montevideo MT
403 -3:30 Uruguay UY%sT 1942 Dec 14 # Uruguay Time
404 -3:00 Uruguay UY%sT
405
406# Venezuela
407# Zone NAME GMTOFF RULES FORMAT [UNTIL]
408Zone America/Caracas -4:27:44 - LMT 1890
409 -4:27:44 - CMT 1912 Feb 12 # Caracas Mean Time
410 -4:30 - VET 1965 # Venezuela Time
411 -4:00 - VET
535# Zone NAME GMTOFF RULES FORMAT [UNTIL]
536Zone America/Montevideo -3:44:44 - LMT 1898 Jun 28
537 -3:44:44 - MMT 1920 May 1 # Montevideo MT
538 -3:30 Uruguay UY%sT 1942 Dec 14 # Uruguay Time
539 -3:00 Uruguay UY%sT
540
541# Venezuela
542# Zone NAME GMTOFF RULES FORMAT [UNTIL]
543Zone America/Caracas -4:27:44 - LMT 1890
544 -4:27:44 - CMT 1912 Feb 12 # Caracas Mean Time
545 -4:30 - VET 1965 # Venezuela Time
546 -4:00 - VET