1# @(#)southamerica 7.40
| 1# @(#)southamerica 7.42
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3# $FreeBSD: head/share/zoneinfo/southamerica 75267 2001-04-06 16:46:52Z wollman $
| 3# $FreeBSD: head/share/zoneinfo/southamerica 86222 2001-11-09 19:17:59Z wollman $
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4 5# This data is by no means authoritative; if you think you know better, 6# go ahead and edit the file (and please send any changes to 7# tz@elsie.nci.nih.gov for general use in the future). 8 9# From Paul Eggert <eggert@twinsun.com> (1999-07-07): 10# A good source for time zone historical data outside the U.S. is 11# Thomas G. Shanks, The International Atlas (5th edition), 12# San Diego: ACS Publications, Inc. (1999). 13#
| 4 5# This data is by no means authoritative; if you think you know better, 6# go ahead and edit the file (and please send any changes to 7# tz@elsie.nci.nih.gov for general use in the future). 8 9# From Paul Eggert <eggert@twinsun.com> (1999-07-07): 10# A good source for time zone historical data outside the U.S. is 11# Thomas G. Shanks, The International Atlas (5th edition), 12# San Diego: ACS Publications, Inc. (1999). 13#
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14# Gwillim Law <Gwil_Law@bridge-point.com> writes that a good source
| 14# Gwillim Law writes that a good source
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15# for recent time zone data is the International Air Transport 16# Association's Standard Schedules Information Manual (IATA SSIM), 17# published semiannually. Law sent in several helpful summaries 18# of the IATA's data after 1990. 19# 20# Except where otherwise noted, Shanks is the source for entries through 1990, 21# and IATA SSIM is the source for entries after 1990. 22# 23# Earlier editions of these tables used the North American style (e.g. ARST and 24# ARDT for Argentine Standard and Daylight Time), but the following quote 25# suggests that it's better to use European style (e.g. ART and ARST). 26# I suggest the use of _Summer time_ instead of the more cumbersome 27# _daylight-saving time_. _Summer time_ seems to be in general use 28# in Europe and South America. 29# -- E O Cutler, _New York Times_ (1937-02-14), quoted in 30# H L Mencken, _The American Language: Supplement I_ (1960), p 466 31# 32# Earlier editions of these tables also used the North American style 33# for time zones in Brazil, but this was incorrect, as Brazilians say 34# "summer time". Reinaldo Goulart, a Sao Paulo businessman active in 35# the railroad sector, writes (1999-07-06): 36# The subject of time zones is currently a matter of discussion/debate in 37# Brazil. Let's say that "the Brasilia time" is considered the 38# "official time" because Brasilia is the capital city. 39# The other three time zones are called "Brasilia time "minus one" or 40# "plus one" or "plus two". As far as I know there is no such 41# name/designation as "Eastern Time" or "Central Time". 42# So I invented the following (English-language) abbreviations for now. 43# Corrections are welcome! 44# std dst 45# -2:00 FNT FNST Fernando de Noronha 46# -3:00 BRT BRST Brasilia 47# -4:00 AMT AMST Amazon 48# -5:00 ACT ACST Acre 49 50############################################################################### 51 52############################################################################### 53 54# Argentina 55 56# From Bob Devine (1988-01-28): 57# Argentina: first Sunday in October to first Sunday in April since 1976. 58# Double Summer time from 1969 to 1974. Switches at midnight. 59 60# From U. S. Naval Observatory (1988-01-199): 61# ARGENTINA 3 H BEHIND UTC 62 63# From Hernan G. Otero <hernan@isoft.com.ar> (1995-06-26): 64# I am sending modifications to the Argentine time zone table... 65# AR was chosen because they are the ISO letters that represent Argentina. 66 67# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 68Rule Arg 1930 only - Dec 1 0:00 1:00 S 69Rule Arg 1931 only - Apr 1 0:00 0 - 70Rule Arg 1931 only - Oct 15 0:00 1:00 S 71Rule Arg 1932 1940 - Mar 1 0:00 0 - 72Rule Arg 1932 1939 - Nov 1 0:00 1:00 S 73Rule Arg 1940 only - Jul 1 0:00 1:00 S 74Rule Arg 1941 only - Jun 15 0:00 0 - 75Rule Arg 1941 only - Oct 15 0:00 1:00 S 76Rule Arg 1943 only - Aug 1 0:00 0 - 77Rule Arg 1943 only - Oct 15 0:00 1:00 S 78Rule Arg 1946 only - Mar 1 0:00 0 - 79Rule Arg 1946 only - Oct 1 0:00 1:00 S 80Rule Arg 1963 only - Oct 1 0:00 0 - 81Rule Arg 1963 only - Dec 15 0:00 1:00 S 82Rule Arg 1964 1966 - Mar 1 0:00 0 - 83Rule Arg 1964 1966 - Oct 15 0:00 1:00 S 84Rule Arg 1967 only - Apr 1 0:00 0 - 85Rule Arg 1967 1968 - Oct Sun>=1 0:00 1:00 S 86Rule Arg 1968 1969 - Apr Sun>=1 0:00 0 - 87Rule Arg 1974 only - Jan 23 0:00 1:00 S 88Rule Arg 1974 only - May 1 0:00 0 - 89Rule Arg 1974 1976 - Oct Sun>=1 0:00 1:00 S 90Rule Arg 1975 1977 - Apr Sun>=1 0:00 0 - 91Rule Arg 1985 only - Nov 2 0:00 1:00 S 92Rule Arg 1986 only - Mar 14 0:00 0 - 93Rule Arg 1986 1987 - Oct 25 0:00 1:00 S 94Rule Arg 1987 only - Feb 13 0:00 0 - 95Rule Arg 1988 only - Feb 7 0:00 0 - 96Rule Arg 1988 only - Dec 1 0:00 1:00 S 97# 98# From Hernan G. Otero <hernan@isoft.com.ar> (1995-06-26): 99# These corrections were contributed by InterSoft Argentina S.A., 100# obtaining the data from the: 101# Talleres de Hidrografia Naval Argentina 102# (Argentine Naval Hydrography Institute) 103# 104# Shanks stops after 1992-03-01; go with Otero. 105Rule Arg 1989 1993 - Mar Sun>=1 0:00 0 - 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# From Rives McDow (2000-01-10): 114# On October 3, 1999, 0:00 local, Argentina implemented daylight savings time, 115# which did not result in the switch of a time zone, as they stayed 9 hours 116# from the International Date Line. 117Rule Arg 1999 only - Oct Sun>=1 0:00 1:00 S 118Rule Arg 2000 only - Mar Sun>=1 0:00 0 - 119# 120# From Peter Gradelski via Steffen Thorsen (2000-03-01): 121# We just checked with our Sao Paulo office and they say the government of 122# Argentina decided not to become one of the countries that go on or off DST. 123# So Buenos Aires should be -3 hours from GMT at all times. 124# 125# From Fabian L. Arce Jofre <farcejofre@bigfoot.com> (2000-04-04): 126# The law that claimed DST for Argentina was derogated by President Fernando 127# de la Rua on March 2, 2000, because it would make people spend more energy 128# in the winter time, rather than less. The change took effect on March 3. 129#
| 15# for recent time zone data is the International Air Transport 16# Association's Standard Schedules Information Manual (IATA SSIM), 17# published semiannually. Law sent in several helpful summaries 18# of the IATA's data after 1990. 19# 20# Except where otherwise noted, Shanks is the source for entries through 1990, 21# and IATA SSIM is the source for entries after 1990. 22# 23# Earlier editions of these tables used the North American style (e.g. ARST and 24# ARDT for Argentine Standard and Daylight Time), but the following quote 25# suggests that it's better to use European style (e.g. ART and ARST). 26# I suggest the use of _Summer time_ instead of the more cumbersome 27# _daylight-saving time_. _Summer time_ seems to be in general use 28# in Europe and South America. 29# -- E O Cutler, _New York Times_ (1937-02-14), quoted in 30# H L Mencken, _The American Language: Supplement I_ (1960), p 466 31# 32# Earlier editions of these tables also used the North American style 33# for time zones in Brazil, but this was incorrect, as Brazilians say 34# "summer time". Reinaldo Goulart, a Sao Paulo businessman active in 35# the railroad sector, writes (1999-07-06): 36# The subject of time zones is currently a matter of discussion/debate in 37# Brazil. Let's say that "the Brasilia time" is considered the 38# "official time" because Brasilia is the capital city. 39# The other three time zones are called "Brasilia time "minus one" or 40# "plus one" or "plus two". As far as I know there is no such 41# name/designation as "Eastern Time" or "Central Time". 42# So I invented the following (English-language) abbreviations for now. 43# Corrections are welcome! 44# std dst 45# -2:00 FNT FNST Fernando de Noronha 46# -3:00 BRT BRST Brasilia 47# -4:00 AMT AMST Amazon 48# -5:00 ACT ACST Acre 49 50############################################################################### 51 52############################################################################### 53 54# Argentina 55 56# From Bob Devine (1988-01-28): 57# Argentina: first Sunday in October to first Sunday in April since 1976. 58# Double Summer time from 1969 to 1974. Switches at midnight. 59 60# From U. S. Naval Observatory (1988-01-199): 61# ARGENTINA 3 H BEHIND UTC 62 63# From Hernan G. Otero <hernan@isoft.com.ar> (1995-06-26): 64# I am sending modifications to the Argentine time zone table... 65# AR was chosen because they are the ISO letters that represent Argentina. 66 67# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 68Rule Arg 1930 only - Dec 1 0:00 1:00 S 69Rule Arg 1931 only - Apr 1 0:00 0 - 70Rule Arg 1931 only - Oct 15 0:00 1:00 S 71Rule Arg 1932 1940 - Mar 1 0:00 0 - 72Rule Arg 1932 1939 - Nov 1 0:00 1:00 S 73Rule Arg 1940 only - Jul 1 0:00 1:00 S 74Rule Arg 1941 only - Jun 15 0:00 0 - 75Rule Arg 1941 only - Oct 15 0:00 1:00 S 76Rule Arg 1943 only - Aug 1 0:00 0 - 77Rule Arg 1943 only - Oct 15 0:00 1:00 S 78Rule Arg 1946 only - Mar 1 0:00 0 - 79Rule Arg 1946 only - Oct 1 0:00 1:00 S 80Rule Arg 1963 only - Oct 1 0:00 0 - 81Rule Arg 1963 only - Dec 15 0:00 1:00 S 82Rule Arg 1964 1966 - Mar 1 0:00 0 - 83Rule Arg 1964 1966 - Oct 15 0:00 1:00 S 84Rule Arg 1967 only - Apr 1 0:00 0 - 85Rule Arg 1967 1968 - Oct Sun>=1 0:00 1:00 S 86Rule Arg 1968 1969 - Apr Sun>=1 0:00 0 - 87Rule Arg 1974 only - Jan 23 0:00 1:00 S 88Rule Arg 1974 only - May 1 0:00 0 - 89Rule Arg 1974 1976 - Oct Sun>=1 0:00 1:00 S 90Rule Arg 1975 1977 - Apr Sun>=1 0:00 0 - 91Rule Arg 1985 only - Nov 2 0:00 1:00 S 92Rule Arg 1986 only - Mar 14 0:00 0 - 93Rule Arg 1986 1987 - Oct 25 0:00 1:00 S 94Rule Arg 1987 only - Feb 13 0:00 0 - 95Rule Arg 1988 only - Feb 7 0:00 0 - 96Rule Arg 1988 only - Dec 1 0:00 1:00 S 97# 98# From Hernan G. Otero <hernan@isoft.com.ar> (1995-06-26): 99# These corrections were contributed by InterSoft Argentina S.A., 100# obtaining the data from the: 101# Talleres de Hidrografia Naval Argentina 102# (Argentine Naval Hydrography Institute) 103# 104# Shanks stops after 1992-03-01; go with Otero. 105Rule Arg 1989 1993 - Mar Sun>=1 0:00 0 - 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# From Rives McDow (2000-01-10): 114# On October 3, 1999, 0:00 local, Argentina implemented daylight savings time, 115# which did not result in the switch of a time zone, as they stayed 9 hours 116# from the International Date Line. 117Rule Arg 1999 only - Oct Sun>=1 0:00 1:00 S 118Rule Arg 2000 only - Mar Sun>=1 0:00 0 - 119# 120# From Peter Gradelski via Steffen Thorsen (2000-03-01): 121# We just checked with our Sao Paulo office and they say the government of 122# Argentina decided not to become one of the countries that go on or off DST. 123# So Buenos Aires should be -3 hours from GMT at all times. 124# 125# From Fabian L. Arce Jofre <farcejofre@bigfoot.com> (2000-04-04): 126# The law that claimed DST for Argentina was derogated by President Fernando 127# de la Rua on March 2, 2000, because it would make people spend more energy 128# in the winter time, rather than less. The change took effect on March 3. 129#
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| 130# From Mariano Absatz (2001-06-06): 131# one of the major newspapers here in Argentina said that the 1999 132# Timezone Law (which never was effectively applied) will (would?) be 133# in effect.... The article is at 134# http://ar.clarin.com/diario/2001-06-06/e-01701.htm 135# ... The Law itself is "Ley No 25155", sanctioned on 1999-08-25, enacted 136# 1999-09-17, and published 1999-09-21. The official publication is at: 137# http://www.boletin.jus.gov.ar/BON/Primera/1999/09-Septiembre/21/PDF/BO21-09-99LEG.PDF 138# Regretfully, you have to subscribe (and pay) for the on-line version.... 139# 140# (2001-06-12): 141# the timezone for Argentina will not change next Sunday. 142# Apparently it will do so on Sunday 24th.... 143# http://ar.clarin.com/diario/2001-06-12/s-03501.htm 144# 145# (2001-06-25): 146# Last Friday (yes, the last working day before the date of the change), the 147# Senate annulled the 1999 law that introduced the changes later postponed. 148# http://www.clarin.com.ar/diario/2001-06-22/s-03601.htm 149# It remains the vote of the Deputies..., but it will be the same.... 150# This kind of things had always been done this way in Argentina. 151# We are still -03:00 all year round in all of the country. 152#
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130# Zone NAME GMTOFF RULES FORMAT [UNTIL] 131# 132# Buenos Aires (BA), Capital Federal (CF), Santa Cruz (SC), 133# Tierra del Fuego, Antartida e Islas del Atlantico Sur (TF) 134Zone America/Buenos_Aires -3:53:48 - LMT 1894 Nov 135 -4:16:44 - CMT 1920 May # Cordoba Mean Time 136 -4:00 - ART 1930 Dec 137 -4:00 Arg AR%sT 1969 Oct 5 138 -3:00 Arg AR%sT 1999 Oct 3 0:00 139 -4:00 Arg AR%sT 2000 Mar 3 0:00 140 -3:00 - ART 141# 142# Santa Fe (SF), Entre Rios (ER), Corrientes (CN), Misiones (MN), Chaco (CC), 143# Formosa (FM), La Pampa (LP), Chubut (CH) 144Zone America/Rosario -4:02:40 - LMT 1894 Nov 145 -4:16:44 - CMT 1920 May 146 -4:00 - ART 1930 Dec 147 -4:00 Arg AR%sT 1969 Oct 5 148 -3:00 Arg AR%sT 1991 Jul 149 -3:00 - ART 1999 Oct 3 0:00 150 -4:00 Arg AR%sT 2000 Mar 3 0:00 151 -3:00 - ART 152# 153# Cordoba (CB), Santiago del Estero (SE), Salta (SA), Tucuman (TM), La Rioja (LR), San Juan (SJ), San Luis (SL), 154# Neuquen (NQ), Rio Negro (RN) 155Zone America/Cordoba -4:16:44 - LMT 1894 Nov 156 -4:16:44 - CMT 1920 May 157 -4:00 - ART 1930 Dec 158 -4:00 Arg AR%sT 1969 Oct 5 159 -3:00 Arg AR%sT 1990 Jul 160 -3:00 - ART 1999 Oct 3 0:00 161 -4:00 Arg AR%sT 2000 Mar 3 0:00 162 -3:00 - ART 163# 164# Jujuy (JY) 165Zone America/Jujuy -4:21:12 - LMT 1894 Nov 166 -4:16:44 - CMT 1920 May 167 -4:00 - ART 1930 Dec 168 -4:00 Arg AR%sT 1969 Oct 5 169 -3:00 Arg AR%sT 1991 Mar 3 170 -4:00 - WART 1991 Oct 6 171 -4:00 1:00 WARST 1992 Mar 15 172 -4:00 - WART 1992 Oct 18 173 -3:00 - ART 1999 Oct 3 0:00 174 -4:00 Arg AR%sT 2000 Mar 3 0:00 175 -3:00 - ART 176# 177# Catamarca (CT) 178Zone America/Catamarca -4:23:08 - LMT 1894 Nov 179 -4:16:44 - CMT 1920 May 180 -4:00 - ART 1930 Dec 181 -4:00 Arg AR%sT 1969 Oct 5 182 -3:00 Arg AR%sT 1990 Jul 183 -3:00 - ART 1991 Jul 184 -3:00 Arg AR%sT 1992 Jul 185 -3:00 - ART 1999 Oct 3 0:00 186 -4:00 Arg AR%sT 2000 Mar 3 0:00 187 -3:00 - ART 188# 189# Mendoza (MZ) 190Zone America/Mendoza -4:35:16 - LMT 1894 Nov 191 -4:16:44 - CMT 1920 May 192 -4:00 - ART 1930 Dec 193 -4:00 Arg AR%sT 1969 Oct 5 194 -3:00 Arg AR%sT 1991 Mar 3 195 -4:00 - WART 1991 Oct 15 196 -4:00 1:00 WARST 1992 Mar 1 197 -4:00 - WART 1992 Oct 18 198 -3:00 - ART 1999 Oct 3 0:00 199 -4:00 Arg AR%sT 2000 Mar 3 0:00 200 -3:00 - ART 201 202# Aruba 203# Zone NAME GMTOFF RULES FORMAT [UNTIL] 204Zone America/Aruba -4:40:24 - LMT 1912 Feb 12 # Oranjestad 205 -4:30 - ANT 1965 # Netherlands Antilles Time 206 -4:00 - AST 207 208# Bolivia 209# Zone NAME GMTOFF RULES FORMAT [UNTIL] 210Zone America/La_Paz -4:32:36 - LMT 1890
| 153# Zone NAME GMTOFF RULES FORMAT [UNTIL] 154# 155# Buenos Aires (BA), Capital Federal (CF), Santa Cruz (SC), 156# Tierra del Fuego, Antartida e Islas del Atlantico Sur (TF) 157Zone America/Buenos_Aires -3:53:48 - LMT 1894 Nov 158 -4:16:44 - CMT 1920 May # Cordoba Mean Time 159 -4:00 - ART 1930 Dec 160 -4:00 Arg AR%sT 1969 Oct 5 161 -3:00 Arg AR%sT 1999 Oct 3 0:00 162 -4:00 Arg AR%sT 2000 Mar 3 0:00 163 -3:00 - ART 164# 165# Santa Fe (SF), Entre Rios (ER), Corrientes (CN), Misiones (MN), Chaco (CC), 166# Formosa (FM), La Pampa (LP), Chubut (CH) 167Zone America/Rosario -4:02:40 - LMT 1894 Nov 168 -4:16:44 - CMT 1920 May 169 -4:00 - ART 1930 Dec 170 -4:00 Arg AR%sT 1969 Oct 5 171 -3:00 Arg AR%sT 1991 Jul 172 -3:00 - ART 1999 Oct 3 0:00 173 -4:00 Arg AR%sT 2000 Mar 3 0:00 174 -3:00 - ART 175# 176# Cordoba (CB), Santiago del Estero (SE), Salta (SA), Tucuman (TM), La Rioja (LR), San Juan (SJ), San Luis (SL), 177# Neuquen (NQ), Rio Negro (RN) 178Zone America/Cordoba -4:16:44 - LMT 1894 Nov 179 -4:16:44 - CMT 1920 May 180 -4:00 - ART 1930 Dec 181 -4:00 Arg AR%sT 1969 Oct 5 182 -3:00 Arg AR%sT 1990 Jul 183 -3:00 - ART 1999 Oct 3 0:00 184 -4:00 Arg AR%sT 2000 Mar 3 0:00 185 -3:00 - ART 186# 187# Jujuy (JY) 188Zone America/Jujuy -4:21:12 - LMT 1894 Nov 189 -4:16:44 - CMT 1920 May 190 -4:00 - ART 1930 Dec 191 -4:00 Arg AR%sT 1969 Oct 5 192 -3:00 Arg AR%sT 1991 Mar 3 193 -4:00 - WART 1991 Oct 6 194 -4:00 1:00 WARST 1992 Mar 15 195 -4:00 - WART 1992 Oct 18 196 -3:00 - ART 1999 Oct 3 0:00 197 -4:00 Arg AR%sT 2000 Mar 3 0:00 198 -3:00 - ART 199# 200# Catamarca (CT) 201Zone America/Catamarca -4:23:08 - LMT 1894 Nov 202 -4:16:44 - CMT 1920 May 203 -4:00 - ART 1930 Dec 204 -4:00 Arg AR%sT 1969 Oct 5 205 -3:00 Arg AR%sT 1990 Jul 206 -3:00 - ART 1991 Jul 207 -3:00 Arg AR%sT 1992 Jul 208 -3:00 - ART 1999 Oct 3 0:00 209 -4:00 Arg AR%sT 2000 Mar 3 0:00 210 -3:00 - ART 211# 212# Mendoza (MZ) 213Zone America/Mendoza -4:35:16 - LMT 1894 Nov 214 -4:16:44 - CMT 1920 May 215 -4:00 - ART 1930 Dec 216 -4:00 Arg AR%sT 1969 Oct 5 217 -3:00 Arg AR%sT 1991 Mar 3 218 -4:00 - WART 1991 Oct 15 219 -4:00 1:00 WARST 1992 Mar 1 220 -4:00 - WART 1992 Oct 18 221 -3:00 - ART 1999 Oct 3 0:00 222 -4:00 Arg AR%sT 2000 Mar 3 0:00 223 -3:00 - ART 224 225# Aruba 226# Zone NAME GMTOFF RULES FORMAT [UNTIL] 227Zone America/Aruba -4:40:24 - LMT 1912 Feb 12 # Oranjestad 228 -4:30 - ANT 1965 # Netherlands Antilles Time 229 -4:00 - AST 230 231# Bolivia 232# Zone NAME GMTOFF RULES FORMAT [UNTIL] 233Zone America/La_Paz -4:32:36 - LMT 1890
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211 -4:32:36 - LPMT 1931 Oct 15 # La Paz Mean Time
| 234 -4:32:36 - CMT 1931 Oct 15 # Calamarca MT
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212 -4:32:36 1:00 BOST 1932 Mar 21 # Bolivia ST 213 -4:00 - BOT # Bolivia Time 214 215# Brazil 216 217# From Paul Eggert <eggert@twinsun.com> (1993-11-18): 218# The mayor of Rio recently attempted to change the time zone rules 219# just in his city, in order to leave more summer time for the tourist trade. 220# The rule change lasted only part of the day; 221# the federal government refused to follow the city's rules, and business 222# was in a chaos, so the mayor backed down that afternoon. 223 224# From IATA SSIM (1996-02): 225# _Only_ the following states in BR1 observe DST: Rio Grande do Sul (RS), 226# Santa Catarina (SC), Parana (PR), Sao Paulo (SP), Rio de Janeiro (RJ), 227# Espirito Santo (ES), Minas Gerais (MG), Bahia (BA), Goias (GO), 228# Distrito Federal (DF), Tocantins (TO), Sergipe [SE] and Alagoas [AL]. 229# [The last three states are new to this issue of the IATA SSIM.] 230 231# From Gwillim Law (1996-10-07): 232# Geography, history (Tocantins was part of Goias until 1989), and other 233# sources of time zone information lead me to believe that AL, SE, and TO were 234# always in BR1, and so the only change was whether or not they observed DST.... 235# The earliest issue of the SSIM I have is 2/91. Each issue from then until 236# 9/95 says that DST is observed only in the ten states I quoted from 9/95, 237# along with Mato Grosso (MT) and Mato Grosso do Sul (MS), which are in BR2 238# (UTC-4).... The other two time zones given for Brazil are BR3, which is 239# UTC-5, no DST, and applies only in the state of Acre (AC); and BR4, which is 240# UTC-2, and applies to Fernando de Noronha (formerly FN, but I believe it's 241# become part of the state of Pernambuco). The boundary between BR1 and BR2 242# has never been clearly stated. They've simply been called East and West. 243# However, some conclusions can be drawn from another IATA manual: the Airline 244# Coding Directory, which lists close to 400 airports in Brazil. For each 245# airport it gives a time zone which is coded to the SSIM. From that 246# information, I'm led to conclude that the states of Amapa (AP), Ceara (CE), 247# Maranhao (MA), Paraiba (PR), Pernambuco (PE), Piaui (PI), and Rio Grande do 248# Norte (RN), and the eastern part of Para (PA) are all in BR1 without DST. 249 250# From Marcos Tadeu (1998-09-27): 251# <a href="http://pcdsh01.on.br/verao1.html"> 252# Brazilian official page 253# </a> 254 255# From Jesper Norgaard (2000-11-03): 256# [For an official list of which regions in Brazil use which time zones, see:] 257# http://pcdsh01.on.br/Fusbr.htm 258# http://pcdsh01.on.br/Fusbrhv.htm 259 260# From Paul Eggert (2000-10-02): 261# The official decrees referenced below are taken from 262# <a href="http://pcdsh01.on.br/DecHV.html"> 263# Decretos sobre o Horario de Verao no Brasil 264# </a> (1999-10-04, in Portuguese). 265# The official site for all decrees, including those not related to time, is 266# <a href="http://www.presidencia.gov.br/CCIVIL/decreto/principal_ano.htm"> 267# Presidencia da Republica, Subchefia para Assuntos Juridicos, Decretos 268# </a> (in Portuguese). 269 270# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 271# Decree <a href="http://pcdsh01.on.br/HV20466.htm">20,466</a> (1931-10-01) 272# Decree <a href="http://pcdsh01.on.br/HV21896.htm">21,896</a> (1932-01-10) 273Rule Brazil 1931 only - Oct 3 11:00 1:00 S 274Rule Brazil 1932 1933 - Apr 1 0:00 0 - 275Rule Brazil 1932 only - Oct 3 0:00 1:00 S 276# Decree <a href="http://pcdsh01.on.br/HV23195.htm">23,195</a> (1933-10-10) 277# revoked DST. 278# Decree <a href="http://pcdsh01.on.br/HV27496.htm">27,496</a> (1949-11-24) 279# Decree <a href="http://pcdsh01.on.br/HV27998.htm">27,998</a> (1950-04-13) 280Rule Brazil 1949 1952 - Dec 1 0:00 1:00 S 281Rule Brazil 1950 only - Apr 16 1:00 0 - 282Rule Brazil 1951 1952 - Apr 1 0:00 0 - 283# Decree <a href="http://pcdsh01.on.br/HV32308.htm">32,308</a> (1953-02-24) 284Rule Brazil 1953 only - Mar 1 0:00 0 - 285# Decree <a href="http://pcdsh01.on.br/HV34724.htm">34,724</a> (1953-11-30) 286# revoked DST. 287# Decree <a href="http://pcdsh01.on.br/HV52700.htm">52,700</a> (1963-10-18) 288# established DST from 1963-10-23 00:00 to 1964-02-29 00:00 289# in SP, RJ, GB, MG, ES, due to the prolongation of the drought. 290# Decree <a href="http://pcdsh01.on.br/HV53071.htm">53,071</a> (1963-12-03) 291# extended the above decree to all of the national territory on 12-09. 292Rule Brazil 1963 only - Dec 9 0:00 1:00 S 293# Decree <a href="http://pcdsh01.on.br/HV53604.htm">53,604</a> (1964-02-25) 294# extended summer time by one day to 1964-03-01 00:00 (start of school). 295Rule Brazil 1964 only - Mar 1 0:00 0 - 296# Decree <a href="http://pcdsh01.on.br/HV55639.htm">55,639</a> (1965-01-27) 297Rule Brazil 1965 only - Jan 31 0:00 1:00 S 298Rule Brazil 1965 only - Mar 31 0:00 0 - 299# Decree <a href="http://pcdsh01.on.br/HV57303.htm">57,303</a> (1965-11-22) 300Rule Brazil 1965 only - Dec 1 0:00 1:00 S 301# Decree <a href="http://pcdsh01.on.br/HV57843.htm">57,843</a> (1966-02-18) 302Rule Brazil 1966 1968 - Mar 1 0:00 0 - 303Rule Brazil 1966 1967 - Nov 1 0:00 1:00 S 304# Decree <a href="http://pcdsh01.on.br/HV63429.htm">63,429</a> (1968-10-15) 305# revoked DST. 306# Decree <a href="http://pcdsh01.on.br/HV91698.htm">91,698</a> (1985-09-27) 307Rule Brazil 1985 only - Nov 2 0:00 1:00 S 308# Decree 92,310 (1986-01-21) 309# Decree 92,463 (1986-03-13) 310Rule Brazil 1986 only - Mar 15 0:00 0 - 311# Decree 93,316 (1986-10-01) 312Rule Brazil 1986 only - Oct 25 0:00 1:00 S 313Rule Brazil 1987 only - Feb 14 0:00 0 - 314# Decree <a href="http://pcdsh01.on.br/HV94922.htm">94,922</a> (1987-09-22) 315Rule Brazil 1987 only - Oct 25 0:00 1:00 S 316Rule Brazil 1988 only - Feb 7 0:00 0 - 317# Decree <a href="http://pcdsh01.on.br/HV96676.htm">96,676</a> (1988-09-12) 318# except for the states of AC, AM, PA, RR, RO, and AP (then a territory) 319Rule Brazil 1988 only - Oct 16 0:00 1:00 S 320Rule Brazil 1989 only - Jan 29 0:00 0 - 321# Decree <a href="http://pcdsh01.on.br/HV98077.htm">98,077</a> (1989-08-21) 322# with the same exceptions 323Rule Brazil 1989 only - Oct 15 0:00 1:00 S 324Rule Brazil 1990 only - Feb 11 0:00 0 - 325# Decree <a href="http://pcdsh01.on.br/HV99530.htm">99,530</a> (1990-09-17) 326# adopted by RS, SC, PR, SP, RJ, ES, MG, GO, MS, DF. 327# Decree 99,629 (1990-10-19) adds BA, MT. 328Rule Brazil 1990 only - Oct 21 0:00 1:00 S 329Rule Brazil 1991 only - Feb 17 0:00 0 - 330# <a href="http://pcdsh01.on.br/HV1991.htm">Unnumbered decree</a> (1991-09-25) 331# adopted by RS, SC, PR, SP, RJ, ES, MG, BA, GO, MT, MS, DF. 332Rule Brazil 1991 only - Oct 20 0:00 1:00 S 333Rule Brazil 1992 only - Feb 9 0:00 0 - 334# <a href="http://pcdsh01.on.br/HV1992.htm">Unnumbered decree</a> (1992-10-16) 335# adopted by same states. 336Rule Brazil 1992 only - Oct 25 0:00 1:00 S 337Rule Brazil 1993 only - Jan 31 0:00 0 - 338# Decree <a href="http://pcdsh01.on.br/HV942.htm">942</a> (1993-09-28) 339# adopted by same states, plus AM. 340# Decree <a href="http://pcdsh01.on.br/HV1252.htm">1,252</a> (1994-09-22) 341# adopted by same states, minus AM. 342# Decree <a href="http://pcdsh01.on.br/HV1636.htm">1,636</a> (1995-09-14) 343# adopted by same states, plus TO. 344# Decree <a href="http://pcdsh01.on.br/HV1674.htm">1,674</a> (1995-10-13) 345# adds AL, SE. 346Rule Brazil 1993 1995 - Oct Sun>=11 0:00 1:00 S 347Rule Brazil 1994 1995 - Feb Sun>=15 0:00 0 - 348Rule Brazil 1996 only - Feb 11 0:00 0 - 349# Decree <a href="http://pcdsh01.on.br/HV2000.htm">2,000</a> (1996-09-04) 350# adopted by same states, minus AL, SE. 351Rule Brazil 1996 only - Oct 6 0:00 1:00 S 352Rule Brazil 1997 only - Feb 16 0:00 0 - 353# From Daniel C. Sobral <dcs@gns.com.br> (1998-02-12): 354# In 1997, the DS began on October 6. The stated reason was that 355# because international television networks ignored Brazil's policy on DS, 356# they bought the wrong times on satellite for coverage of Pope's visit. 357# This year, the ending date of DS was postponed to March 1 358# to help dealing with the shortages of electric power. 359# 360# From Paul Eggert (1998-02-25): 361# <a href="http://churchnet.ucsm.ac.uk/news/files2/news165.htm"> 362# Brazil Prepares for Papal Visit 363# </a>, 364# Church Net UK (1997-10-02). 365# 366# Decree 2,317 (1997-09-04), adopted by same states. 367Rule Brazil 1997 only - Oct 6 0:00 1:00 S 368# Decree <a href="http://pcdsh01.on.br/figuras/HV2495.JPG">2,495</a> 369# (1998-02-10) 370Rule Brazil 1998 only - Mar 1 0:00 0 - 371# Decree <a href="http://pcdsh01.on.br/figuras/Hv98.jpg">2,780</a> (1998-09-11) 372# adopted by the same states as before. 373Rule Brazil 1998 only - Oct 11 0:00 1:00 S 374Rule Brazil 1999 only - Feb 21 0:00 0 - 375# Decree <a href="http://pcdsh01.on.br/figuras/HV3150.gif">3,150</a> 376# (1999-08-23) adopted by same states. 377# Decree <a href="http://pcdsh01.on.br/DecHV99.gif">3,188</a> (1999-09-30) 378# adds SE, AL, PB, PE, RN, CE, PI, MA and RR. 379Rule Brazil 1999 only - Oct 3 0:00 1:00 S 380Rule Brazil 2000 only - Feb 27 0:00 0 - 381# Decree <a href="http://pcdsh01.on.br/DEC3592.htm">3,592</a> (2000-09-06) 382# adopted by the same states as before. 383# Decree <a href="http://pcdsh01.on.br/Dec3630.jpg">3,630</a> (2000-10-13) 384# repeals DST in PE and RR, effective 2000-10-15 00:00. 385# Decree <a href="http://pcdsh01.on.br/Dec3632.jpg">3,632</a> (2000-10-17) 386# repeals DST in SE, AL, PB, RN, CE, PI and MA, effective 2000-10-22 00:00.
| 235 -4:32:36 1:00 BOST 1932 Mar 21 # Bolivia ST 236 -4:00 - BOT # Bolivia Time 237 238# Brazil 239 240# From Paul Eggert <eggert@twinsun.com> (1993-11-18): 241# The mayor of Rio recently attempted to change the time zone rules 242# just in his city, in order to leave more summer time for the tourist trade. 243# The rule change lasted only part of the day; 244# the federal government refused to follow the city's rules, and business 245# was in a chaos, so the mayor backed down that afternoon. 246 247# From IATA SSIM (1996-02): 248# _Only_ the following states in BR1 observe DST: Rio Grande do Sul (RS), 249# Santa Catarina (SC), Parana (PR), Sao Paulo (SP), Rio de Janeiro (RJ), 250# Espirito Santo (ES), Minas Gerais (MG), Bahia (BA), Goias (GO), 251# Distrito Federal (DF), Tocantins (TO), Sergipe [SE] and Alagoas [AL]. 252# [The last three states are new to this issue of the IATA SSIM.] 253 254# From Gwillim Law (1996-10-07): 255# Geography, history (Tocantins was part of Goias until 1989), and other 256# sources of time zone information lead me to believe that AL, SE, and TO were 257# always in BR1, and so the only change was whether or not they observed DST.... 258# The earliest issue of the SSIM I have is 2/91. Each issue from then until 259# 9/95 says that DST is observed only in the ten states I quoted from 9/95, 260# along with Mato Grosso (MT) and Mato Grosso do Sul (MS), which are in BR2 261# (UTC-4).... The other two time zones given for Brazil are BR3, which is 262# UTC-5, no DST, and applies only in the state of Acre (AC); and BR4, which is 263# UTC-2, and applies to Fernando de Noronha (formerly FN, but I believe it's 264# become part of the state of Pernambuco). The boundary between BR1 and BR2 265# has never been clearly stated. They've simply been called East and West. 266# However, some conclusions can be drawn from another IATA manual: the Airline 267# Coding Directory, which lists close to 400 airports in Brazil. For each 268# airport it gives a time zone which is coded to the SSIM. From that 269# information, I'm led to conclude that the states of Amapa (AP), Ceara (CE), 270# Maranhao (MA), Paraiba (PR), Pernambuco (PE), Piaui (PI), and Rio Grande do 271# Norte (RN), and the eastern part of Para (PA) are all in BR1 without DST. 272 273# From Marcos Tadeu (1998-09-27): 274# <a href="http://pcdsh01.on.br/verao1.html"> 275# Brazilian official page 276# </a> 277 278# From Jesper Norgaard (2000-11-03): 279# [For an official list of which regions in Brazil use which time zones, see:] 280# http://pcdsh01.on.br/Fusbr.htm 281# http://pcdsh01.on.br/Fusbrhv.htm 282 283# From Paul Eggert (2000-10-02): 284# The official decrees referenced below are taken from 285# <a href="http://pcdsh01.on.br/DecHV.html"> 286# Decretos sobre o Horario de Verao no Brasil 287# </a> (1999-10-04, in Portuguese). 288# The official site for all decrees, including those not related to time, is 289# <a href="http://www.presidencia.gov.br/CCIVIL/decreto/principal_ano.htm"> 290# Presidencia da Republica, Subchefia para Assuntos Juridicos, Decretos 291# </a> (in Portuguese). 292 293# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 294# Decree <a href="http://pcdsh01.on.br/HV20466.htm">20,466</a> (1931-10-01) 295# Decree <a href="http://pcdsh01.on.br/HV21896.htm">21,896</a> (1932-01-10) 296Rule Brazil 1931 only - Oct 3 11:00 1:00 S 297Rule Brazil 1932 1933 - Apr 1 0:00 0 - 298Rule Brazil 1932 only - Oct 3 0:00 1:00 S 299# Decree <a href="http://pcdsh01.on.br/HV23195.htm">23,195</a> (1933-10-10) 300# revoked DST. 301# Decree <a href="http://pcdsh01.on.br/HV27496.htm">27,496</a> (1949-11-24) 302# Decree <a href="http://pcdsh01.on.br/HV27998.htm">27,998</a> (1950-04-13) 303Rule Brazil 1949 1952 - Dec 1 0:00 1:00 S 304Rule Brazil 1950 only - Apr 16 1:00 0 - 305Rule Brazil 1951 1952 - Apr 1 0:00 0 - 306# Decree <a href="http://pcdsh01.on.br/HV32308.htm">32,308</a> (1953-02-24) 307Rule Brazil 1953 only - Mar 1 0:00 0 - 308# Decree <a href="http://pcdsh01.on.br/HV34724.htm">34,724</a> (1953-11-30) 309# revoked DST. 310# Decree <a href="http://pcdsh01.on.br/HV52700.htm">52,700</a> (1963-10-18) 311# established DST from 1963-10-23 00:00 to 1964-02-29 00:00 312# in SP, RJ, GB, MG, ES, due to the prolongation of the drought. 313# Decree <a href="http://pcdsh01.on.br/HV53071.htm">53,071</a> (1963-12-03) 314# extended the above decree to all of the national territory on 12-09. 315Rule Brazil 1963 only - Dec 9 0:00 1:00 S 316# Decree <a href="http://pcdsh01.on.br/HV53604.htm">53,604</a> (1964-02-25) 317# extended summer time by one day to 1964-03-01 00:00 (start of school). 318Rule Brazil 1964 only - Mar 1 0:00 0 - 319# Decree <a href="http://pcdsh01.on.br/HV55639.htm">55,639</a> (1965-01-27) 320Rule Brazil 1965 only - Jan 31 0:00 1:00 S 321Rule Brazil 1965 only - Mar 31 0:00 0 - 322# Decree <a href="http://pcdsh01.on.br/HV57303.htm">57,303</a> (1965-11-22) 323Rule Brazil 1965 only - Dec 1 0:00 1:00 S 324# Decree <a href="http://pcdsh01.on.br/HV57843.htm">57,843</a> (1966-02-18) 325Rule Brazil 1966 1968 - Mar 1 0:00 0 - 326Rule Brazil 1966 1967 - Nov 1 0:00 1:00 S 327# Decree <a href="http://pcdsh01.on.br/HV63429.htm">63,429</a> (1968-10-15) 328# revoked DST. 329# Decree <a href="http://pcdsh01.on.br/HV91698.htm">91,698</a> (1985-09-27) 330Rule Brazil 1985 only - Nov 2 0:00 1:00 S 331# Decree 92,310 (1986-01-21) 332# Decree 92,463 (1986-03-13) 333Rule Brazil 1986 only - Mar 15 0:00 0 - 334# Decree 93,316 (1986-10-01) 335Rule Brazil 1986 only - Oct 25 0:00 1:00 S 336Rule Brazil 1987 only - Feb 14 0:00 0 - 337# Decree <a href="http://pcdsh01.on.br/HV94922.htm">94,922</a> (1987-09-22) 338Rule Brazil 1987 only - Oct 25 0:00 1:00 S 339Rule Brazil 1988 only - Feb 7 0:00 0 - 340# Decree <a href="http://pcdsh01.on.br/HV96676.htm">96,676</a> (1988-09-12) 341# except for the states of AC, AM, PA, RR, RO, and AP (then a territory) 342Rule Brazil 1988 only - Oct 16 0:00 1:00 S 343Rule Brazil 1989 only - Jan 29 0:00 0 - 344# Decree <a href="http://pcdsh01.on.br/HV98077.htm">98,077</a> (1989-08-21) 345# with the same exceptions 346Rule Brazil 1989 only - Oct 15 0:00 1:00 S 347Rule Brazil 1990 only - Feb 11 0:00 0 - 348# Decree <a href="http://pcdsh01.on.br/HV99530.htm">99,530</a> (1990-09-17) 349# adopted by RS, SC, PR, SP, RJ, ES, MG, GO, MS, DF. 350# Decree 99,629 (1990-10-19) adds BA, MT. 351Rule Brazil 1990 only - Oct 21 0:00 1:00 S 352Rule Brazil 1991 only - Feb 17 0:00 0 - 353# <a href="http://pcdsh01.on.br/HV1991.htm">Unnumbered decree</a> (1991-09-25) 354# adopted by RS, SC, PR, SP, RJ, ES, MG, BA, GO, MT, MS, DF. 355Rule Brazil 1991 only - Oct 20 0:00 1:00 S 356Rule Brazil 1992 only - Feb 9 0:00 0 - 357# <a href="http://pcdsh01.on.br/HV1992.htm">Unnumbered decree</a> (1992-10-16) 358# adopted by same states. 359Rule Brazil 1992 only - Oct 25 0:00 1:00 S 360Rule Brazil 1993 only - Jan 31 0:00 0 - 361# Decree <a href="http://pcdsh01.on.br/HV942.htm">942</a> (1993-09-28) 362# adopted by same states, plus AM. 363# Decree <a href="http://pcdsh01.on.br/HV1252.htm">1,252</a> (1994-09-22) 364# adopted by same states, minus AM. 365# Decree <a href="http://pcdsh01.on.br/HV1636.htm">1,636</a> (1995-09-14) 366# adopted by same states, plus TO. 367# Decree <a href="http://pcdsh01.on.br/HV1674.htm">1,674</a> (1995-10-13) 368# adds AL, SE. 369Rule Brazil 1993 1995 - Oct Sun>=11 0:00 1:00 S 370Rule Brazil 1994 1995 - Feb Sun>=15 0:00 0 - 371Rule Brazil 1996 only - Feb 11 0:00 0 - 372# Decree <a href="http://pcdsh01.on.br/HV2000.htm">2,000</a> (1996-09-04) 373# adopted by same states, minus AL, SE. 374Rule Brazil 1996 only - Oct 6 0:00 1:00 S 375Rule Brazil 1997 only - Feb 16 0:00 0 - 376# From Daniel C. Sobral <dcs@gns.com.br> (1998-02-12): 377# In 1997, the DS began on October 6. The stated reason was that 378# because international television networks ignored Brazil's policy on DS, 379# they bought the wrong times on satellite for coverage of Pope's visit. 380# This year, the ending date of DS was postponed to March 1 381# to help dealing with the shortages of electric power. 382# 383# From Paul Eggert (1998-02-25): 384# <a href="http://churchnet.ucsm.ac.uk/news/files2/news165.htm"> 385# Brazil Prepares for Papal Visit 386# </a>, 387# Church Net UK (1997-10-02). 388# 389# Decree 2,317 (1997-09-04), adopted by same states. 390Rule Brazil 1997 only - Oct 6 0:00 1:00 S 391# Decree <a href="http://pcdsh01.on.br/figuras/HV2495.JPG">2,495</a> 392# (1998-02-10) 393Rule Brazil 1998 only - Mar 1 0:00 0 - 394# Decree <a href="http://pcdsh01.on.br/figuras/Hv98.jpg">2,780</a> (1998-09-11) 395# adopted by the same states as before. 396Rule Brazil 1998 only - Oct 11 0:00 1:00 S 397Rule Brazil 1999 only - Feb 21 0:00 0 - 398# Decree <a href="http://pcdsh01.on.br/figuras/HV3150.gif">3,150</a> 399# (1999-08-23) adopted by same states. 400# Decree <a href="http://pcdsh01.on.br/DecHV99.gif">3,188</a> (1999-09-30) 401# adds SE, AL, PB, PE, RN, CE, PI, MA and RR. 402Rule Brazil 1999 only - Oct 3 0:00 1:00 S 403Rule Brazil 2000 only - Feb 27 0:00 0 - 404# Decree <a href="http://pcdsh01.on.br/DEC3592.htm">3,592</a> (2000-09-06) 405# adopted by the same states as before. 406# Decree <a href="http://pcdsh01.on.br/Dec3630.jpg">3,630</a> (2000-10-13) 407# repeals DST in PE and RR, effective 2000-10-15 00:00. 408# Decree <a href="http://pcdsh01.on.br/Dec3632.jpg">3,632</a> (2000-10-17) 409# repeals DST in SE, AL, PB, RN, CE, PI and MA, effective 2000-10-22 00:00.
|
| 410# Decree <a href="http://pcdsh01.on.br/figuras/HV3916.gif">3,916</a> 411# (2001-09-13) reestablishes DST in AL, CE, MA, PB, PE, PI, RN, SE.
|
387#
| 412#
|
388# These give only one year's rules. After that, the rules are guesses
| 413# The latest decree listed above says that the following states observe DST: 414# AL, BA, CE, DF, ES, GO, MA, MG, MS, MT, 415# PB, PE, PI, PR, RJ, RN, RS, SC, SE, SP, TO. 416# 417# For dates after mid-2002, the following rules are guesses
|
389# and are quite possibly wrong, but are more likely than no DST at all. 390Rule Brazil 2000 max - Oct Sun>=8 0:00 1:00 S 391Rule Brazil 2001 max - Feb Sun>=15 0:00 0 - 392 393 394# Zone NAME GMTOFF RULES FORMAT [UNTIL] 395# 396# Atlantic islands: Fernando de Noronha, Trindade, Martin Vaz, 397# Atol das Rocas, and Penedos de Sao Pedro e Sao Paulo 398Zone America/Noronha -2:09:40 - LMT 1914 399 -2:00 Brazil FN%sT 1990 Sep 17 400 -2:00 - FNT 401# 402# Amapa (AP), east Para (PA) 403# East Para includes Belem, Maraba, Serra Norte, and Sao Felix do Xingu. 404Zone America/Belem -3:13:56 - LMT 1914 405 -3:00 Brazil BR%sT 1988 Sep 12 406 -3:00 - BRT 407# 408# Maranhao (MA), Piaui (PI), Ceara (CE), Rio Grande do Norte (RN), 409# Paraiba (PB) 410Zone America/Fortaleza -2:34:00 - LMT 1914 411 -3:00 Brazil BR%sT 1990 Sep 17 412 -3:00 - BRT 1999 Sep 30 413 -3:00 Brazil BR%sT 2000 Oct 22
| 418# and are quite possibly wrong, but are more likely than no DST at all. 419Rule Brazil 2000 max - Oct Sun>=8 0:00 1:00 S 420Rule Brazil 2001 max - Feb Sun>=15 0:00 0 - 421 422 423# Zone NAME GMTOFF RULES FORMAT [UNTIL] 424# 425# Atlantic islands: Fernando de Noronha, Trindade, Martin Vaz, 426# Atol das Rocas, and Penedos de Sao Pedro e Sao Paulo 427Zone America/Noronha -2:09:40 - LMT 1914 428 -2:00 Brazil FN%sT 1990 Sep 17 429 -2:00 - FNT 430# 431# Amapa (AP), east Para (PA) 432# East Para includes Belem, Maraba, Serra Norte, and Sao Felix do Xingu. 433Zone America/Belem -3:13:56 - LMT 1914 434 -3:00 Brazil BR%sT 1988 Sep 12 435 -3:00 - BRT 436# 437# Maranhao (MA), Piaui (PI), Ceara (CE), Rio Grande do Norte (RN), 438# Paraiba (PB) 439Zone America/Fortaleza -2:34:00 - LMT 1914 440 -3:00 Brazil BR%sT 1990 Sep 17 441 -3:00 - BRT 1999 Sep 30 442 -3:00 Brazil BR%sT 2000 Oct 22
|
414 -3:00 - BRT
| 443 -3:00 - BRT 2001 Sep 13 444 -3:00 Brazil BR%sT
|
415# 416# Pernambuco (PE) (except Atlantic islands) 417Zone America/Recife -2:19:36 - LMT 1914 418 -3:00 Brazil BR%sT 1990 Sep 17 419 -3:00 - BRT 1999 Sep 30 420 -3:00 Brazil BR%sT 2000 Oct 15
| 445# 446# Pernambuco (PE) (except Atlantic islands) 447Zone America/Recife -2:19:36 - LMT 1914 448 -3:00 Brazil BR%sT 1990 Sep 17 449 -3:00 - BRT 1999 Sep 30 450 -3:00 Brazil BR%sT 2000 Oct 15
|
421 -3:00 - BRT
| 451 -3:00 - BRT 2001 Sep 13 452 -3:00 Brazil BR%sT
|
422# 423# Tocantins (TO) 424Zone America/Araguaina -3:12:48 - LMT 1914 425 -3:00 Brazil BR%sT 1990 Sep 17 426 -3:00 - BRT 1995 Sep 14 427 -3:00 Brazil BR%sT 428# 429# Alagoas (AL), Sergipe (SE) 430Zone America/Maceio -2:22:52 - LMT 1914 431 -3:00 Brazil BR%sT 1990 Sep 17 432 -3:00 - BRT 1995 Oct 13 433 -3:00 Brazil BR%sT 1996 Sep 4 434 -3:00 - BRT 1999 Sep 30 435 -3:00 Brazil BR%sT 2000 Oct 22
| 453# 454# Tocantins (TO) 455Zone America/Araguaina -3:12:48 - LMT 1914 456 -3:00 Brazil BR%sT 1990 Sep 17 457 -3:00 - BRT 1995 Sep 14 458 -3:00 Brazil BR%sT 459# 460# Alagoas (AL), Sergipe (SE) 461Zone America/Maceio -2:22:52 - LMT 1914 462 -3:00 Brazil BR%sT 1990 Sep 17 463 -3:00 - BRT 1995 Oct 13 464 -3:00 Brazil BR%sT 1996 Sep 4 465 -3:00 - BRT 1999 Sep 30 466 -3:00 Brazil BR%sT 2000 Oct 22
|
436 -3:00 - BRT
| 467 -3:00 - BRT 2001 Sep 13 468 -3:00 Brazil BR%sT
|
437# 438# Bahia (BA), Goias (GO), Distrito Federal (DF), Minas Gerais (MG), 439# Espirito Santo (ES), Rio de Janeiro (RJ), Sao Paulo (SP), Parana (PR), 440# Santa Catarina (SC), Rio Grande do Sul (RS) 441Zone America/Sao_Paulo -3:06:28 - LMT 1914 442 -3:00 Brazil BR%sT 1963 Oct 23 00:00 443 -3:00 1:00 BRST 1964 444 -3:00 Brazil BR%sT 445#
| 469# 470# Bahia (BA), Goias (GO), Distrito Federal (DF), Minas Gerais (MG), 471# Espirito Santo (ES), Rio de Janeiro (RJ), Sao Paulo (SP), Parana (PR), 472# Santa Catarina (SC), Rio Grande do Sul (RS) 473Zone America/Sao_Paulo -3:06:28 - LMT 1914 474 -3:00 Brazil BR%sT 1963 Oct 23 00:00 475 -3:00 1:00 BRST 1964 476 -3:00 Brazil BR%sT 477#
|
446# Mato Grosso, Mato Grosso do Sul
| 478# Mato Grosso (MT), Mato Grosso do Sul (MS)
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447Zone America/Cuiaba -3:44:20 - LMT 1914 448 -4:00 Brazil AM%sT 449# 450# west Para (PA), Rondonia (RO) 451# West Para includes Altamira, Oribidos, Prainha, Oriximina, and Santarem. 452Zone America/Porto_Velho -4:15:36 - LMT 1914 453 -4:00 Brazil AM%sT 1988 Sep 12 454 -4:00 - AMT 455# 456# Roraima (RR) 457Zone America/Boa_Vista -4:02:40 - LMT 1914 458 -4:00 Brazil AM%sT 1988 Sep 12 459 -4:00 - AMT 1999 Sep 30 460 -4:00 Brazil AM%sT 2000 Oct 15 461 -4:00 - AMT 462# 463# east Amazonas (AM): Boca do Acre, Jutai, Manaus, Floriano Peixoto 464Zone America/Manaus -4:00:04 - LMT 1914 465 -4:00 Brazil AM%sT 1988 Sep 12 466 -4:00 - AMT 1993 Sep 28 467 -4:00 Brazil AM%sT 1994 Sep 22 468 -4:00 - AMT 469# 470# west Amazonas (AM): Atalaia do Norte, Boca do Maoco, Benjamin Constant, 471# Eirunepe, Envira, Ipixuna 472Zone America/Eirunepe -4:39:28 - LMT 1914 473 -5:00 Brazil AC%sT 1988 Sep 12 474 -5:00 - ACT 1993 Sep 28 475 -5:00 Brazil AC%sT 1994 Sep 22 476 -5:00 - ACT 477# 478# Acre (AC) 479Zone America/Rio_Branco -4:31:12 - LMT 1914 480 -5:00 Brazil AC%sT 1988 Sep 12 481 -5:00 - ACT 482 483 484# Chile 485 486# From Eduardo Krell (1995-10-19): 487# The law says to switch to DST at midnight [24:00] on the second SATURDAY 488# of October.... The law is the same for March and October. 489# (1998-09-29): 490# Because of the drought this year, the government decided to go into 491# DST earlier (saturday 9/26 at 24:00). This is a one-time change only ... 492# (unless there's another dry season next year, I guess). 493 494# From Julio I. Pacheco Troncoso (1999-03-18): 495# Because of the same drought, the government decided to end DST later, 496# on April 3, (one-time change). 497
| 479Zone America/Cuiaba -3:44:20 - LMT 1914 480 -4:00 Brazil AM%sT 481# 482# west Para (PA), Rondonia (RO) 483# West Para includes Altamira, Oribidos, Prainha, Oriximina, and Santarem. 484Zone America/Porto_Velho -4:15:36 - LMT 1914 485 -4:00 Brazil AM%sT 1988 Sep 12 486 -4:00 - AMT 487# 488# Roraima (RR) 489Zone America/Boa_Vista -4:02:40 - LMT 1914 490 -4:00 Brazil AM%sT 1988 Sep 12 491 -4:00 - AMT 1999 Sep 30 492 -4:00 Brazil AM%sT 2000 Oct 15 493 -4:00 - AMT 494# 495# east Amazonas (AM): Boca do Acre, Jutai, Manaus, Floriano Peixoto 496Zone America/Manaus -4:00:04 - LMT 1914 497 -4:00 Brazil AM%sT 1988 Sep 12 498 -4:00 - AMT 1993 Sep 28 499 -4:00 Brazil AM%sT 1994 Sep 22 500 -4:00 - AMT 501# 502# west Amazonas (AM): Atalaia do Norte, Boca do Maoco, Benjamin Constant, 503# Eirunepe, Envira, Ipixuna 504Zone America/Eirunepe -4:39:28 - LMT 1914 505 -5:00 Brazil AC%sT 1988 Sep 12 506 -5:00 - ACT 1993 Sep 28 507 -5:00 Brazil AC%sT 1994 Sep 22 508 -5:00 - ACT 509# 510# Acre (AC) 511Zone America/Rio_Branco -4:31:12 - LMT 1914 512 -5:00 Brazil AC%sT 1988 Sep 12 513 -5:00 - ACT 514 515 516# Chile 517 518# From Eduardo Krell (1995-10-19): 519# The law says to switch to DST at midnight [24:00] on the second SATURDAY 520# of October.... The law is the same for March and October. 521# (1998-09-29): 522# Because of the drought this year, the government decided to go into 523# DST earlier (saturday 9/26 at 24:00). This is a one-time change only ... 524# (unless there's another dry season next year, I guess). 525 526# From Julio I. Pacheco Troncoso (1999-03-18): 527# Because of the same drought, the government decided to end DST later, 528# on April 3, (one-time change). 529
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498# From Gwillim Law (2001-02-20): 499# I came across a Chilean on-line newspaper, La Tercera. Its 500# <a href="http://www.tercera.cl/diario/1998/03/13/extras.html"> 501# 1998-03-13 issue 502# </a>, says (my translation): 503# "At 24:00 (midnight) tomorrow (Saturday) - 22:00 in the insular 504# territory [Easter Island, Juan Fernandez, etc.] - winter time will 505# begin in the entire country."
| 530# From Gwillim Law (2001-05-04): 531# I came across another article in "La Tercera" about Chilean DST. 532# <http://www.tercera.cl/diario/2000/10/13/t-extras.html> 533# It clearly confirms my earlier suggestion, that DST begins at 22:00 534# on Easter Island.... But it also seems to be saying that the 535# observance of DST in Chile began in 1966, rather than 1969 as 536# ... [Shanks] has it.... 537# 538# My translation: 539# 540# "The Chilean Army has announced that summer time will begin tomorrow, 541# Saturday, October 14 in continental Chile, insular Chile, and 542# Antarctica, as provided by Supreme Decree 25 of January 11, 1966. 543# By the preceding, official time in continental Chile and Chilean 544# Antarctic, and official time in Western Insular Chile, which applies 545# to Easter Island and Sala y Gomez Island, will be set forward at 546# midnight and at 22:00, respectively, by 20 minutes."
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506
| 547
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507# From Paul Eggert (2001-02-21):
| 548# From Paul Eggert (2001-05-04): 549# Go with this article in preference to Shanks's 1969 date for modern DST.
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508# Assume this rule has been used since DST was introduced in the islands. 509 510# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 511Rule Chile 1918 only - Sep 1 0:00 1:00 S 512Rule Chile 1919 only - Jul 2 0:00 0 - 513Rule Chile 1927 1931 - Sep 1 0:00 1:00 S 514Rule Chile 1928 1932 - Apr 1 0:00 0 -
| 550# Assume this rule has been used since DST was introduced in the islands. 551 552# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 553Rule Chile 1918 only - Sep 1 0:00 1:00 S 554Rule Chile 1919 only - Jul 2 0:00 0 - 555Rule Chile 1927 1931 - Sep 1 0:00 1:00 S 556Rule Chile 1928 1932 - Apr 1 0:00 0 -
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515Rule Chile 1969 1997 - Oct Sun>=9 4:00u 1:00 S 516Rule Chile 1970 1998 - Mar Sun>=9 3:00u 0 -
| 557Rule Chile 1966 1997 - Oct Sun>=9 4:00u 1:00 S 558Rule Chile 1967 1998 - Mar Sun>=9 3:00u 0 -
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517Rule Chile 1998 only - Sep 27 4:00u 1:00 S 518Rule Chile 1999 only - Apr 4 3:00u 0 - 519Rule Chile 1999 max - Oct Sun>=9 4:00u 1:00 S 520Rule Chile 2000 max - Mar Sun>=9 3:00u 0 - 521# IATA SSIM anomalies: (1990-09) says 1990-09-16; (1992-02) says 1992-03-14; 522# (1996-09) says 1998-03-08. Ignore these. 523# Zone NAME GMTOFF RULES FORMAT [UNTIL] 524Zone America/Santiago -4:42:40 - LMT 1890 525 -4:42:40 - SMT 1910 # Santiago Mean Time 526 -5:00 Chile CL%sT 1932 Sep # Chile Time 527 -4:00 Chile CL%sT 528Zone Pacific/Easter -7:17:28 - LMT 1890 # Mataveri 529 -7:17:28 - MMT 1932 Sep # Mataveri Mean Time 530 -7:00 Chile EAS%sT 1982 Mar 14 # Easter I Time 531 -6:00 Chile EAS%sT 532#
| 559Rule Chile 1998 only - Sep 27 4:00u 1:00 S 560Rule Chile 1999 only - Apr 4 3:00u 0 - 561Rule Chile 1999 max - Oct Sun>=9 4:00u 1:00 S 562Rule Chile 2000 max - Mar Sun>=9 3:00u 0 - 563# IATA SSIM anomalies: (1990-09) says 1990-09-16; (1992-02) says 1992-03-14; 564# (1996-09) says 1998-03-08. Ignore these. 565# Zone NAME GMTOFF RULES FORMAT [UNTIL] 566Zone America/Santiago -4:42:40 - LMT 1890 567 -4:42:40 - SMT 1910 # Santiago Mean Time 568 -5:00 Chile CL%sT 1932 Sep # Chile Time 569 -4:00 Chile CL%sT 570Zone Pacific/Easter -7:17:28 - LMT 1890 # Mataveri 571 -7:17:28 - MMT 1932 Sep # Mataveri Mean Time 572 -7:00 Chile EAS%sT 1982 Mar 14 # Easter I Time 573 -6:00 Chile EAS%sT 574#
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533# Whitman says Juan Fernandez Is are like America/Santiago. 534# San Ambrosio, San Felix 535# no information; probably like America/Santiago
| 575# Sala y Gomez Island is like Pacific/Easter. 576# Other Chilean locations, including Juan Fernandez Is, San Ambrosio, 577# San Felix, and Antarctic bases, are like America/Santiago.
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536
| 578
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537
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538# Colombia 539# Shanks specifies 24:00 for 1992 transition times; go with IATA, 540# as it seems implausible to change clocks at midnight New Year's Eve. 541# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 542Rule CO 1992 only - May 2 0:00 1:00 S 543Rule CO 1992 only - Dec 31 0:00 0 - 544# Zone NAME GMTOFF RULES FORMAT [UNTIL] 545Zone America/Bogota -4:56:20 - LMT 1884 Mar 13 546 -4:56:20 - BMT 1914 Nov 23 # Bogota Mean Time 547 -5:00 CO CO%sT # Colombia Time 548# Malpelo, Providencia, San Andres 549# no information; probably like America/Bogota 550 551# Curacao 552# Shanks says that Bottom and Oranjestad have been at -4:00 since 553# standard time was introduced on 1912-03-02; and that Kralendijk and Rincon 554# used Kralendijk Mean Time (-4:33:08) from 1912-02-02 to 1965-01-01. 555# This all predates our 1970 cutoff, though. 556# Zone NAME GMTOFF RULES FORMAT [UNTIL] 557Zone America/Curacao -4:35:44 - LMT 1912 Feb 12 # Willemstad 558 -4:30 - ANT 1965 # Netherlands Antilles Time 559 -4:00 - AST 560 561# Ecuador 562# Zone NAME GMTOFF RULES FORMAT [UNTIL] 563Zone America/Guayaquil -5:19:20 - LMT 1890 564 -5:14:00 - QMT 1931 # Quito Mean Time 565 -5:00 - ECT # Ecuador Time 566Zone Pacific/Galapagos -5:58:24 - LMT 1931 # Puerto Baquerizo Moreno 567 -5:00 - ECT 1986 568 -6:00 - GALT # Galapagos Time 569 570# Falklands 571 572# From Paul Eggert (2001-03-05): 573# Between 1990 and 2000 inclusive, Shanks and the IATA agree except 574# the IATA gives 1996-09-08. Go with Shanks. 575 576# From Falkland Islands Government Office, London (2001-01-22) 577# via Jesper Norgaard: 578# ... the clocks revert back to Local Mean Time at 2 am on Sunday 15 579# April 2001 and advance one hour to summer time at 2 am on Sunday 2 580# September. It is anticipated that the clocks will revert back at 2 581# am on Sunday 21 April 2002 and advance to summer time at 2 am on 582# Sunday 1 September. 583 584# From Rives McDow (2001-02-13): 585# 586# I have communicated several times with people there, and the last 587# time I had communications that was helpful was in 1998. Here is 588# what was said then: 589# 590# "The general rule was that Stanley used daylight saving and the Camp 591# did not. However for various reasons many people in the Camp have 592# started to use daylight saving (known locally as 'Stanley Time') 593# There is no rule as to who uses daylight saving - it is a matter of 594# personal choice and so it is impossible to draw a map showing who 595# uses it and who does not. Any list would be out of date as soon as 596# it was produced. This year daylight saving ended on April 18/19th 597# and started again on September 12/13th. I do not know what the rule 598# is, but can find out if you like. We do not change at the same time 599# as UK or Chile." 600# 601# I did have in my notes that the rule was "Second Saturday in Sep at 602# 0:00 until third Saturday in Apr at 0:00". I think that this does 603# not agree in some cases with Shanks; is this true? 604# 605# Also, there is no mention in the list that some areas in the 606# Falklands do not use DST. I have found in my communications there 607# that these areas are on the western half of East Falkland and all of 608# West Falkland. Stanley is the only place that consistently observes 609# DST. Again, as in other places in the world, the farmers don't like 610# it. West Falkland is almost entirely sheep farmers. 611# 612# I know one lady there that keeps a list of which farm keeps DST and 613# which doesn't each year. She runs a shop in Stanley, and says that 614# the list changes each year. She uses it to communicate to her 615# customers, catching them when they are home for lunch or dinner. 616 617# From Paul Eggert (2001-03-05): 618# For now, we'll just record the time in Stanley, since we have no 619# better info. 620 621# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 622Rule Falk 1937 1938 - Sep lastSun 0:00 1:00 S 623Rule Falk 1938 1942 - Mar Sun>=19 0:00 0 - 624Rule Falk 1939 only - Oct 1 0:00 1:00 S 625Rule Falk 1940 1942 - Sep lastSun 0:00 1:00 S 626Rule Falk 1943 only - Jan 1 0:00 0 - 627Rule Falk 1983 only - Sep lastSun 0:00 1:00 S 628Rule Falk 1984 1985 - Apr lastSun 0:00 0 - 629Rule Falk 1984 only - Sep 16 0:00 1:00 S 630Rule Falk 1985 2000 - Sep Sun>=9 0:00 1:00 S 631Rule Falk 1986 2000 - Apr Sun>=16 0:00 0 - 632Rule Falk 2001 max - Apr Sun>=15 2:00 0 - 633Rule Falk 2001 max - Sep Sun>=1 2:00 1:00 S 634# Zone NAME GMTOFF RULES FORMAT [UNTIL] 635Zone Atlantic/Stanley -3:51:24 - LMT 1890 636 -3:51:24 - SMT 1912 Mar 12 # Stanley Mean Time 637 -4:00 Falk FK%sT 1983 May # Falkland Is Time 638 -3:00 Falk FK%sT 1985 Sep 15 639 -4:00 Falk FK%sT 640 641# French Guiana 642# Zone NAME GMTOFF RULES FORMAT [UNTIL] 643Zone America/Cayenne -3:29:20 - LMT 1911 Jul 644 -4:00 - GFT 1967 Oct # French Guiana Time 645 -3:00 - GFT 646 647# Guyana 648# Zone NAME GMTOFF RULES FORMAT [UNTIL] 649Zone America/Guyana -3:52:40 - LMT 1915 Mar # Georgetown 650 -3:45 - GBGT 1966 May 26 # Br Guiana Time 651 -3:45 - GYT 1975 Jul 31 # Guyana Time 652 -3:00 - GYT 1991 653# IATA SSIM (1996-06) says -4:00. Assume a 1991 switch. 654 -4:00 - GYT 655 656# Paraguay 657# From Paul Eggert (1999-10-29): 658# Shanks (1999) says that spring transitions are from 01:00 -> 02:00, 659# and autumn transitions are from 00:00 -> 23:00. Go with earlier 660# editions of Shanks, and with the IATA, who say transitions occur at 00:00. 661# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 662Rule Para 1975 1988 - Oct 1 0:00 1:00 S 663Rule Para 1975 1978 - Mar 1 0:00 0 - 664Rule Para 1979 1991 - Apr 1 0:00 0 - 665Rule Para 1989 only - Oct 22 0:00 1:00 S 666Rule Para 1990 only - Oct 1 0:00 1:00 S 667Rule Para 1991 only - Oct 6 0:00 1:00 S 668Rule Para 1992 only - Mar 1 0:00 0 - 669Rule Para 1992 only - Oct 5 0:00 1:00 S 670Rule Para 1993 only - Mar 31 0:00 0 - 671Rule Para 1993 1995 - Oct 1 0:00 1:00 S 672Rule Para 1994 1995 - Feb lastSun 0:00 0 - 673Rule Para 1996 only - Mar 1 0:00 0 - 674# IATA SSIM (2000-02) says 1999-10-10; ignore this for now. 675# From Steffen Thorsen (2000-10-02): 676# I have three independent reports that Paraguay changed to DST this Sunday 677# (10-01). 678# 679# Translated by Gwillim Law (2001-02-27) from 680# <a href="http://www.diarionoticias.com.py/011000/nacional/naciona1.htm"> 681# Noticias, a daily paper in Asuncion, Paraguay (2000-10-01) 682# </a>: 683# Starting at 0:00 today, the clock will be set forward 60 minutes, in 684# fulfillment of Decree No. 7,273 of the Executive Power.... The time change 685# system has been operating for several years. Formerly there was a separate 686# decree each year; the new law has the same effect, but permanently. Every 687# year, the time will change on the first Sunday of October; likewise, the 688# clock will be set back on the first Sunday of March. 689# 690# From Jesper Norgaard (2001-03-06) [an official URL saying similar things]: 691# http://gateway.abc.com.py:8000/pub/pag04.mbr/artic?FHA=2001-03-03-02.24.52.900592 692# 693Rule Para 1996 max - Oct Sun>=1 0:00 1:00 S 694# IATA SSIM (1997-09) says Mar 1; go with Shanks. 695Rule Para 1997 only - Feb lastSun 0:00 0 - 696# Shanks says 1999-02-28; IATA SSIM (1999-02) says 1999-02-27, but 697# (1999-09) reports no date; go with above sources and Gerd Knops (2001-02-27). 698Rule Para 1998 max - Mar Sun>=1 0:00 0 - 699 700# Zone NAME GMTOFF RULES FORMAT [UNTIL] 701Zone America/Asuncion -3:50:40 - LMT 1890 702 -3:50:40 - AMT 1931 Oct 10 # Asuncion Mean Time 703 -4:00 - PYT 1972 Oct # Paraguay Time 704 -3:00 - PYT 1974 Apr 705 -4:00 Para PY%sT 706 707# Peru 708# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 709Rule Peru 1938 only - Jan 1 0:00 1:00 S 710Rule Peru 1938 only - Apr 1 0:00 0 - 711Rule Peru 1938 1939 - Sep lastSun 0:00 1:00 S 712Rule Peru 1939 1940 - Mar Sun>=24 0:00 0 - 713Rule Peru 1987 only - Jan 1 0:00 1:00 S 714Rule Peru 1987 only - Apr 1 0:00 0 - 715Rule Peru 1990 only - Jan 1 0:00 1:00 S 716Rule Peru 1990 only - Apr 1 0:00 0 - 717# IATA is ambiguous for 1993/1995; go with Shanks. 718Rule Peru 1994 only - Jan 1 0:00 1:00 S 719Rule Peru 1994 only - Apr 1 0:00 0 - 720# Zone NAME GMTOFF RULES FORMAT [UNTIL] 721Zone America/Lima -5:08:12 - LMT 1890
| 579# Colombia 580# Shanks specifies 24:00 for 1992 transition times; go with IATA, 581# as it seems implausible to change clocks at midnight New Year's Eve. 582# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 583Rule CO 1992 only - May 2 0:00 1:00 S 584Rule CO 1992 only - Dec 31 0:00 0 - 585# Zone NAME GMTOFF RULES FORMAT [UNTIL] 586Zone America/Bogota -4:56:20 - LMT 1884 Mar 13 587 -4:56:20 - BMT 1914 Nov 23 # Bogota Mean Time 588 -5:00 CO CO%sT # Colombia Time 589# Malpelo, Providencia, San Andres 590# no information; probably like America/Bogota 591 592# Curacao 593# Shanks says that Bottom and Oranjestad have been at -4:00 since 594# standard time was introduced on 1912-03-02; and that Kralendijk and Rincon 595# used Kralendijk Mean Time (-4:33:08) from 1912-02-02 to 1965-01-01. 596# This all predates our 1970 cutoff, though. 597# Zone NAME GMTOFF RULES FORMAT [UNTIL] 598Zone America/Curacao -4:35:44 - LMT 1912 Feb 12 # Willemstad 599 -4:30 - ANT 1965 # Netherlands Antilles Time 600 -4:00 - AST 601 602# Ecuador 603# Zone NAME GMTOFF RULES FORMAT [UNTIL] 604Zone America/Guayaquil -5:19:20 - LMT 1890 605 -5:14:00 - QMT 1931 # Quito Mean Time 606 -5:00 - ECT # Ecuador Time 607Zone Pacific/Galapagos -5:58:24 - LMT 1931 # Puerto Baquerizo Moreno 608 -5:00 - ECT 1986 609 -6:00 - GALT # Galapagos Time 610 611# Falklands 612 613# From Paul Eggert (2001-03-05): 614# Between 1990 and 2000 inclusive, Shanks and the IATA agree except 615# the IATA gives 1996-09-08. Go with Shanks. 616 617# From Falkland Islands Government Office, London (2001-01-22) 618# via Jesper Norgaard: 619# ... the clocks revert back to Local Mean Time at 2 am on Sunday 15 620# April 2001 and advance one hour to summer time at 2 am on Sunday 2 621# September. It is anticipated that the clocks will revert back at 2 622# am on Sunday 21 April 2002 and advance to summer time at 2 am on 623# Sunday 1 September. 624 625# From Rives McDow (2001-02-13): 626# 627# I have communicated several times with people there, and the last 628# time I had communications that was helpful was in 1998. Here is 629# what was said then: 630# 631# "The general rule was that Stanley used daylight saving and the Camp 632# did not. However for various reasons many people in the Camp have 633# started to use daylight saving (known locally as 'Stanley Time') 634# There is no rule as to who uses daylight saving - it is a matter of 635# personal choice and so it is impossible to draw a map showing who 636# uses it and who does not. Any list would be out of date as soon as 637# it was produced. This year daylight saving ended on April 18/19th 638# and started again on September 12/13th. I do not know what the rule 639# is, but can find out if you like. We do not change at the same time 640# as UK or Chile." 641# 642# I did have in my notes that the rule was "Second Saturday in Sep at 643# 0:00 until third Saturday in Apr at 0:00". I think that this does 644# not agree in some cases with Shanks; is this true? 645# 646# Also, there is no mention in the list that some areas in the 647# Falklands do not use DST. I have found in my communications there 648# that these areas are on the western half of East Falkland and all of 649# West Falkland. Stanley is the only place that consistently observes 650# DST. Again, as in other places in the world, the farmers don't like 651# it. West Falkland is almost entirely sheep farmers. 652# 653# I know one lady there that keeps a list of which farm keeps DST and 654# which doesn't each year. She runs a shop in Stanley, and says that 655# the list changes each year. She uses it to communicate to her 656# customers, catching them when they are home for lunch or dinner. 657 658# From Paul Eggert (2001-03-05): 659# For now, we'll just record the time in Stanley, since we have no 660# better info. 661 662# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 663Rule Falk 1937 1938 - Sep lastSun 0:00 1:00 S 664Rule Falk 1938 1942 - Mar Sun>=19 0:00 0 - 665Rule Falk 1939 only - Oct 1 0:00 1:00 S 666Rule Falk 1940 1942 - Sep lastSun 0:00 1:00 S 667Rule Falk 1943 only - Jan 1 0:00 0 - 668Rule Falk 1983 only - Sep lastSun 0:00 1:00 S 669Rule Falk 1984 1985 - Apr lastSun 0:00 0 - 670Rule Falk 1984 only - Sep 16 0:00 1:00 S 671Rule Falk 1985 2000 - Sep Sun>=9 0:00 1:00 S 672Rule Falk 1986 2000 - Apr Sun>=16 0:00 0 - 673Rule Falk 2001 max - Apr Sun>=15 2:00 0 - 674Rule Falk 2001 max - Sep Sun>=1 2:00 1:00 S 675# Zone NAME GMTOFF RULES FORMAT [UNTIL] 676Zone Atlantic/Stanley -3:51:24 - LMT 1890 677 -3:51:24 - SMT 1912 Mar 12 # Stanley Mean Time 678 -4:00 Falk FK%sT 1983 May # Falkland Is Time 679 -3:00 Falk FK%sT 1985 Sep 15 680 -4:00 Falk FK%sT 681 682# French Guiana 683# Zone NAME GMTOFF RULES FORMAT [UNTIL] 684Zone America/Cayenne -3:29:20 - LMT 1911 Jul 685 -4:00 - GFT 1967 Oct # French Guiana Time 686 -3:00 - GFT 687 688# Guyana 689# Zone NAME GMTOFF RULES FORMAT [UNTIL] 690Zone America/Guyana -3:52:40 - LMT 1915 Mar # Georgetown 691 -3:45 - GBGT 1966 May 26 # Br Guiana Time 692 -3:45 - GYT 1975 Jul 31 # Guyana Time 693 -3:00 - GYT 1991 694# IATA SSIM (1996-06) says -4:00. Assume a 1991 switch. 695 -4:00 - GYT 696 697# Paraguay 698# From Paul Eggert (1999-10-29): 699# Shanks (1999) says that spring transitions are from 01:00 -> 02:00, 700# and autumn transitions are from 00:00 -> 23:00. Go with earlier 701# editions of Shanks, and with the IATA, who say transitions occur at 00:00. 702# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 703Rule Para 1975 1988 - Oct 1 0:00 1:00 S 704Rule Para 1975 1978 - Mar 1 0:00 0 - 705Rule Para 1979 1991 - Apr 1 0:00 0 - 706Rule Para 1989 only - Oct 22 0:00 1:00 S 707Rule Para 1990 only - Oct 1 0:00 1:00 S 708Rule Para 1991 only - Oct 6 0:00 1:00 S 709Rule Para 1992 only - Mar 1 0:00 0 - 710Rule Para 1992 only - Oct 5 0:00 1:00 S 711Rule Para 1993 only - Mar 31 0:00 0 - 712Rule Para 1993 1995 - Oct 1 0:00 1:00 S 713Rule Para 1994 1995 - Feb lastSun 0:00 0 - 714Rule Para 1996 only - Mar 1 0:00 0 - 715# IATA SSIM (2000-02) says 1999-10-10; ignore this for now. 716# From Steffen Thorsen (2000-10-02): 717# I have three independent reports that Paraguay changed to DST this Sunday 718# (10-01). 719# 720# Translated by Gwillim Law (2001-02-27) from 721# <a href="http://www.diarionoticias.com.py/011000/nacional/naciona1.htm"> 722# Noticias, a daily paper in Asuncion, Paraguay (2000-10-01) 723# </a>: 724# Starting at 0:00 today, the clock will be set forward 60 minutes, in 725# fulfillment of Decree No. 7,273 of the Executive Power.... The time change 726# system has been operating for several years. Formerly there was a separate 727# decree each year; the new law has the same effect, but permanently. Every 728# year, the time will change on the first Sunday of October; likewise, the 729# clock will be set back on the first Sunday of March. 730# 731# From Jesper Norgaard (2001-03-06) [an official URL saying similar things]: 732# http://gateway.abc.com.py:8000/pub/pag04.mbr/artic?FHA=2001-03-03-02.24.52.900592 733# 734Rule Para 1996 max - Oct Sun>=1 0:00 1:00 S 735# IATA SSIM (1997-09) says Mar 1; go with Shanks. 736Rule Para 1997 only - Feb lastSun 0:00 0 - 737# Shanks says 1999-02-28; IATA SSIM (1999-02) says 1999-02-27, but 738# (1999-09) reports no date; go with above sources and Gerd Knops (2001-02-27). 739Rule Para 1998 max - Mar Sun>=1 0:00 0 - 740 741# Zone NAME GMTOFF RULES FORMAT [UNTIL] 742Zone America/Asuncion -3:50:40 - LMT 1890 743 -3:50:40 - AMT 1931 Oct 10 # Asuncion Mean Time 744 -4:00 - PYT 1972 Oct # Paraguay Time 745 -3:00 - PYT 1974 Apr 746 -4:00 Para PY%sT 747 748# Peru 749# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 750Rule Peru 1938 only - Jan 1 0:00 1:00 S 751Rule Peru 1938 only - Apr 1 0:00 0 - 752Rule Peru 1938 1939 - Sep lastSun 0:00 1:00 S 753Rule Peru 1939 1940 - Mar Sun>=24 0:00 0 - 754Rule Peru 1987 only - Jan 1 0:00 1:00 S 755Rule Peru 1987 only - Apr 1 0:00 0 - 756Rule Peru 1990 only - Jan 1 0:00 1:00 S 757Rule Peru 1990 only - Apr 1 0:00 0 - 758# IATA is ambiguous for 1993/1995; go with Shanks. 759Rule Peru 1994 only - Jan 1 0:00 1:00 S 760Rule Peru 1994 only - Apr 1 0:00 0 - 761# Zone NAME GMTOFF RULES FORMAT [UNTIL] 762Zone America/Lima -5:08:12 - LMT 1890
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722 -5:09 - LMT 1908 Jul 28 # Lima Mean Time
| 763 -5:08:36 - LMT 1908 Jul 28 # Lima Mean Time?
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723 -5:00 Peru PE%sT # Peru Time 724 725# South Georgia 726# Zone NAME GMTOFF RULES FORMAT [UNTIL] 727Zone Atlantic/South_Georgia -2:26:08 - LMT 1890 # Grytviken 728 -2:00 - GST # South Georgia Time 729 730# South Sandwich Is 731# uninhabited; scientific personnel have wintered 732 733# Suriname 734# Zone NAME GMTOFF RULES FORMAT [UNTIL] 735Zone America/Paramaribo -3:40:40 - LMT 1911 736 -3:40:52 - PMT 1935 # Paramaribo Mean Time 737 -3:40:36 - PMT 1945 Oct # The capital moved? 738 -3:30 - NEGT 1975 Nov 20 # Dutch Guiana Time 739 -3:30 - SRT 1984 Oct # Suriname Time 740 -3:00 - SRT 741 742# Trinidad and Tobago 743# Zone NAME GMTOFF RULES FORMAT [UNTIL] 744Zone America/Port_of_Spain -4:06:04 - LMT 1912 Mar 2 745 -4:00 - AST 746 747# Uruguay 748# From Paul Eggert <eggert@twinsun.com> (1993-11-18): 749# Uruguay wins the prize for the strangest peacetime manipulation of the rules. 750# From Shanks: 751# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 752# Whitman gives 1923 Oct 1; go with Shanks. 753Rule Uruguay 1923 only - Oct 2 0:00 0:30 HS 754Rule Uruguay 1924 1926 - Apr 1 0:00 0 - 755Rule Uruguay 1924 1925 - Oct 1 0:00 0:30 HS 756Rule Uruguay 1933 1935 - Oct lastSun 0:00 0:30 HS 757# Shanks gives 1935 Apr 1 0:00 and 1936 Mar 30 0:00; go with Whitman. 758Rule Uruguay 1934 1936 - Mar Sat>=25 23:30s 0 - 759Rule Uruguay 1936 only - Nov 1 0:00 0:30 HS 760Rule Uruguay 1937 1941 - Mar lastSun 0:00 0 - 761# Whitman gives 1937 Oct 3; go with Shanks. 762Rule Uruguay 1937 1940 - Oct lastSun 0:00 0:30 HS 763# Whitman gives 1941 Oct 24 - 1942 Mar 27, 1942 Dec 14 - 1943 Apr 13, 764# and 1943 Apr 13 ``to present time''; go with Shanks. 765Rule Uruguay 1941 only - Aug 1 0:00 0 - 766Rule Uruguay 1942 only - Jan 1 0:00 0:30 HS 767Rule Uruguay 1942 only - Dec 14 0:00 1:00 S 768Rule Uruguay 1943 only - Mar 14 0:00 0 - 769Rule Uruguay 1959 only - May 24 0:00 1:00 S 770Rule Uruguay 1959 only - Nov 15 0:00 0 - 771Rule Uruguay 1960 only - Jan 17 0:00 1:00 S 772Rule Uruguay 1960 only - Mar 6 0:00 0 - 773Rule Uruguay 1965 1967 - Apr Sun>=1 0:00 1:00 S 774Rule Uruguay 1965 only - Sep 26 0:00 0 - 775Rule Uruguay 1966 1967 - Oct 31 0:00 0 - 776Rule Uruguay 1968 1970 - May 27 0:00 0:30 HS 777Rule Uruguay 1968 1970 - Dec 2 0:00 0 - 778Rule Uruguay 1972 only - Apr 24 0:00 1:00 S 779Rule Uruguay 1972 only - Aug 15 0:00 0 - 780Rule Uruguay 1974 only - Mar 10 0:00 0:30 HS 781Rule Uruguay 1974 only - Dec 22 0:00 1:00 S 782Rule Uruguay 1976 only - Oct 1 0:00 0 - 783Rule Uruguay 1977 only - Dec 4 0:00 1:00 S 784Rule Uruguay 1978 only - Apr 1 0:00 0 - 785Rule Uruguay 1979 only - Oct 1 0:00 1:00 S 786Rule Uruguay 1980 only - May 1 0:00 0 - 787Rule Uruguay 1987 only - Dec 14 0:00 1:00 S 788Rule Uruguay 1988 only - Mar 14 0:00 0 - 789Rule Uruguay 1988 only - Dec 11 0:00 1:00 S 790Rule Uruguay 1989 only - Mar 12 0:00 0 - 791Rule Uruguay 1989 only - Oct 29 0:00 1:00 S 792# Shanks says no DST was observed in 1990/1 and 1991/2, 793# and that 1992/3's DST was from 10-25 to 03-01. Go with IATA. 794Rule Uruguay 1990 1992 - Mar Sun>=1 0:00 0 - 795Rule Uruguay 1990 1991 - Oct Sun>=21 0:00 1:00 S 796Rule Uruguay 1992 only - Oct 18 0:00 1:00 S 797Rule Uruguay 1993 only - Feb 28 0:00 0 - 798# Zone NAME GMTOFF RULES FORMAT [UNTIL] 799Zone America/Montevideo -3:44:44 - LMT 1898 Jun 28 800 -3:44:44 - MMT 1920 May 1 # Montevideo MT 801 -3:30 Uruguay UY%sT 1942 Dec 14 # Uruguay Time 802 -3:00 Uruguay UY%sT 803 804# Venezuela 805# Zone NAME GMTOFF RULES FORMAT [UNTIL] 806Zone America/Caracas -4:27:44 - LMT 1890
| 764 -5:00 Peru PE%sT # Peru Time 765 766# South Georgia 767# Zone NAME GMTOFF RULES FORMAT [UNTIL] 768Zone Atlantic/South_Georgia -2:26:08 - LMT 1890 # Grytviken 769 -2:00 - GST # South Georgia Time 770 771# South Sandwich Is 772# uninhabited; scientific personnel have wintered 773 774# Suriname 775# Zone NAME GMTOFF RULES FORMAT [UNTIL] 776Zone America/Paramaribo -3:40:40 - LMT 1911 777 -3:40:52 - PMT 1935 # Paramaribo Mean Time 778 -3:40:36 - PMT 1945 Oct # The capital moved? 779 -3:30 - NEGT 1975 Nov 20 # Dutch Guiana Time 780 -3:30 - SRT 1984 Oct # Suriname Time 781 -3:00 - SRT 782 783# Trinidad and Tobago 784# Zone NAME GMTOFF RULES FORMAT [UNTIL] 785Zone America/Port_of_Spain -4:06:04 - LMT 1912 Mar 2 786 -4:00 - AST 787 788# Uruguay 789# From Paul Eggert <eggert@twinsun.com> (1993-11-18): 790# Uruguay wins the prize for the strangest peacetime manipulation of the rules. 791# From Shanks: 792# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 793# Whitman gives 1923 Oct 1; go with Shanks. 794Rule Uruguay 1923 only - Oct 2 0:00 0:30 HS 795Rule Uruguay 1924 1926 - Apr 1 0:00 0 - 796Rule Uruguay 1924 1925 - Oct 1 0:00 0:30 HS 797Rule Uruguay 1933 1935 - Oct lastSun 0:00 0:30 HS 798# Shanks gives 1935 Apr 1 0:00 and 1936 Mar 30 0:00; go with Whitman. 799Rule Uruguay 1934 1936 - Mar Sat>=25 23:30s 0 - 800Rule Uruguay 1936 only - Nov 1 0:00 0:30 HS 801Rule Uruguay 1937 1941 - Mar lastSun 0:00 0 - 802# Whitman gives 1937 Oct 3; go with Shanks. 803Rule Uruguay 1937 1940 - Oct lastSun 0:00 0:30 HS 804# Whitman gives 1941 Oct 24 - 1942 Mar 27, 1942 Dec 14 - 1943 Apr 13, 805# and 1943 Apr 13 ``to present time''; go with Shanks. 806Rule Uruguay 1941 only - Aug 1 0:00 0 - 807Rule Uruguay 1942 only - Jan 1 0:00 0:30 HS 808Rule Uruguay 1942 only - Dec 14 0:00 1:00 S 809Rule Uruguay 1943 only - Mar 14 0:00 0 - 810Rule Uruguay 1959 only - May 24 0:00 1:00 S 811Rule Uruguay 1959 only - Nov 15 0:00 0 - 812Rule Uruguay 1960 only - Jan 17 0:00 1:00 S 813Rule Uruguay 1960 only - Mar 6 0:00 0 - 814Rule Uruguay 1965 1967 - Apr Sun>=1 0:00 1:00 S 815Rule Uruguay 1965 only - Sep 26 0:00 0 - 816Rule Uruguay 1966 1967 - Oct 31 0:00 0 - 817Rule Uruguay 1968 1970 - May 27 0:00 0:30 HS 818Rule Uruguay 1968 1970 - Dec 2 0:00 0 - 819Rule Uruguay 1972 only - Apr 24 0:00 1:00 S 820Rule Uruguay 1972 only - Aug 15 0:00 0 - 821Rule Uruguay 1974 only - Mar 10 0:00 0:30 HS 822Rule Uruguay 1974 only - Dec 22 0:00 1:00 S 823Rule Uruguay 1976 only - Oct 1 0:00 0 - 824Rule Uruguay 1977 only - Dec 4 0:00 1:00 S 825Rule Uruguay 1978 only - Apr 1 0:00 0 - 826Rule Uruguay 1979 only - Oct 1 0:00 1:00 S 827Rule Uruguay 1980 only - May 1 0:00 0 - 828Rule Uruguay 1987 only - Dec 14 0:00 1:00 S 829Rule Uruguay 1988 only - Mar 14 0:00 0 - 830Rule Uruguay 1988 only - Dec 11 0:00 1:00 S 831Rule Uruguay 1989 only - Mar 12 0:00 0 - 832Rule Uruguay 1989 only - Oct 29 0:00 1:00 S 833# Shanks says no DST was observed in 1990/1 and 1991/2, 834# and that 1992/3's DST was from 10-25 to 03-01. Go with IATA. 835Rule Uruguay 1990 1992 - Mar Sun>=1 0:00 0 - 836Rule Uruguay 1990 1991 - Oct Sun>=21 0:00 1:00 S 837Rule Uruguay 1992 only - Oct 18 0:00 1:00 S 838Rule Uruguay 1993 only - Feb 28 0:00 0 - 839# Zone NAME GMTOFF RULES FORMAT [UNTIL] 840Zone America/Montevideo -3:44:44 - LMT 1898 Jun 28 841 -3:44:44 - MMT 1920 May 1 # Montevideo MT 842 -3:30 Uruguay UY%sT 1942 Dec 14 # Uruguay Time 843 -3:00 Uruguay UY%sT 844 845# Venezuela 846# Zone NAME GMTOFF RULES FORMAT [UNTIL] 847Zone America/Caracas -4:27:44 - LMT 1890
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807 -4:27:44 - CMT 1912 Feb 12 # Caracas Mean Time
| 848 -4:27:40 - CMT 1912 Feb 12 # Caracas Mean Time?
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808 -4:30 - VET 1965 # Venezuela Time 809 -4:00 - VET
| 849 -4:30 - VET 1965 # Venezuela Time 850 -4:00 - VET
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