Deleted Added
full compact
southamerica (280413) southamerica (283042)
1# This file is in the public domain, so clarified as of
2# 2009-05-17 by Arthur David Olson.
3
4# This file is by no means authoritative; if you think you know better,
5# go ahead and edit the file (and please send any changes to
6# tz@iana.org for general use in the future). For more, please see
7# the file CONTRIBUTING in the tz distribution.
8

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1093Zone America/Rio_Branco -4:31:12 - LMT 1914
1094 -5:00 Brazil AC%sT 1988 Sep 12
1095 -5:00 - ACT 2008 Jun 24 0:00
1096 -4:00 - AMT 2013 Nov 10
1097 -5:00 - ACT
1098
1099# Chile
1100
1# This file is in the public domain, so clarified as of
2# 2009-05-17 by Arthur David Olson.
3
4# This file is by no means authoritative; if you think you know better,
5# go ahead and edit the file (and please send any changes to
6# tz@iana.org for general use in the future). For more, please see
7# the file CONTRIBUTING in the tz distribution.
8

--- 1084 unchanged lines hidden (view full) ---

1093Zone America/Rio_Branco -4:31:12 - LMT 1914
1094 -5:00 Brazil AC%sT 1988 Sep 12
1095 -5:00 - ACT 2008 Jun 24 0:00
1096 -4:00 - AMT 2013 Nov 10
1097 -5:00 - ACT
1098
1099# Chile
1100
1101# From Paul Eggert (2015-04-03):
1102# Shanks & Pottenger says America/Santiago introduced standard time in
1103# 1890 and rounds its UTC offset to 70W40; guess that in practice this
1104# was the same offset as in 1916-1919. It also says Pacific/Easter
1105# standardized on 109W22 in 1890; assume this didn't change the clocks.
1106#
1107# Dates for America/Santiago from 1910 to 2004 are primarily from
1108# the following source, cited by Oscar van Vlijmen (2006-10-08):
1109# [1] Chile Law
1110# http://www.webexhibits.org/daylightsaving/chile.html
1111# This contains a copy of a this official table:
1112# Cambios en la hora oficial de Chile desde 1900 (retrieved 2008-03-30)
1113# http://web.archive.org/web/20080330200901/http://www.horaoficial.cl/cambio.htm
1114# [1] needs several corrections, though.
1115#
1116# The first set of corrections is from:
1117# [2] History of the Official Time of Chile
1118# http://www.horaoficial.cl/ing/horaof_ing.html (retrieved 2012-03-06). See:
1119# http://web.archive.org/web/20120306042032/http://www.horaoficial.cl/ing/horaof_ing.html
1120# This is an English translation of:
1121# Historia de la hora oficial de Chile (retrieved 2012-10-24). See:
1122# http://web.archive.org/web/20121024234627/http://www.horaoficial.cl/horaof.htm
1123# A fancier Spanish version (requiring mouse-clicking) is at:
1124# http://www.horaoficial.cl/historia_hora.html
1125# Conflicts between [1] and [2] were resolved as follows:
1126#
1127# - [1] says the 1910 transition was Jan 1, [2] says Jan 10 and cites
1128# Bolet��n N�� 1, Aviso N�� 1 (1910). Go with [2].
1129#
1130# - [1] says SMT was -4:42:45, [2] says Chile's official time from
1131# 1916 to 1919 was -4:42:46.3, the meridian of Chile's National
1132# Astronomical Observatory (OAN), then located in what is now
1133# Quinta Normal in Santiago. Go with [2], rounding it to -4:42:46.
1134#
1135# - [1] says the 1918 transition was Sep 1, [2] says Sep 10 and cites
1136# Bolet��n N�� 22, Aviso N�� 129/1918 (1918-08-23). Go with [2].
1137#
1138# - [1] does not give times for transitions; assume they occur
1139# at midnight mainland time, the current common practice. However,
1140# go with [2]'s specification of 23:00 for the 1947-05-21 transition.
1141#
1142# Another correction to [1] is from Jesper N��rgaard Welen, who
1143# wrote (2006-10-08), "I think that there are some obvious mistakes in
1144# the suggested link from Oscar van Vlijmen,... for instance entry 66
1145# says that GMT-4 ended 1990-09-12 while entry 67 only begins GMT-3 at
1146# 1990-09-15 (they should have been 1990-09-15 and 1990-09-16
1147# respectively), but anyhow it clears up some doubts too."
1148#
1149# Data for Pacific/Easter from 1910 through 1967 come from Shanks &
1150# Pottenger. After that, for lack of better info assume
1151# Pacific/Easter is always two hours behind America/Santiago;
1152# this is known to work for DST transitions starting in 2008 and
1153# may well be true for earlier transitions.
1154
1101# From Eduardo Krell (1995-10-19):
1102# The law says to switch to DST at midnight [24:00] on the second SATURDAY
1103# of October.... The law is the same for March and October.
1104# (1998-09-29):
1105# Because of the drought this year, the government decided to go into
1106# DST earlier (saturday 9/26 at 24:00). This is a one-time change only ...
1107# (unless there's another dry season next year, I guess).
1108
1109# From Julio I. Pacheco Troncoso (1999-03-18):
1110# Because of the same drought, the government decided to end DST later,
1111# on April 3, (one-time change).
1112
1155# From Eduardo Krell (1995-10-19):
1156# The law says to switch to DST at midnight [24:00] on the second SATURDAY
1157# of October.... The law is the same for March and October.
1158# (1998-09-29):
1159# Because of the drought this year, the government decided to go into
1160# DST earlier (saturday 9/26 at 24:00). This is a one-time change only ...
1161# (unless there's another dry season next year, I guess).
1162
1163# From Julio I. Pacheco Troncoso (1999-03-18):
1164# Because of the same drought, the government decided to end DST later,
1165# on April 3, (one-time change).
1166
1113# From Oscar van Vlijmen (2006-10-08):
1114# http://www.horaoficial.cl/cambio.htm
1115
1116# From Jesper N��rgaard Welen (2006-10-08):
1117# I think that there are some obvious mistakes in the suggested link
1118# from Oscar van Vlijmen,... for instance entry 66 says that GMT-4
1119# ended 1990-09-12 while entry 67 only begins GMT-3 at 1990-09-15
1120# (they should have been 1990-09-15 and 1990-09-16 respectively), but
1121# anyhow it clears up some doubts too.
1122
1123# From Paul Eggert (2014-08-12):
1124# The following data entries for Chile and America/Santiago are from
1125# <http://www.horaoficial.cl/horaof.htm> (2006-09-20), transcribed by
1126# Jesper N��rgaard Welen. The data entries for Pacific/Easter are from Shanks
1127# & Pottenger, except with DST transitions after 1932 cloned from
1128# America/Santiago. The pre-1980 Pacific/Easter data entries are dubious,
1129# but we have no other source.
1130
1131# From Germ��n Poo-Caama��o (2008-03-03):
1132# Due to drought, Chile extends Daylight Time in three weeks. This
1133# is one-time change (Saturday 3/29 at 24:00 for America/Santiago
1134# and Saturday 3/29 at 22:00 for Pacific/Easter)
1135# The Supreme Decree is located at
1136# http://www.shoa.cl/servicios/supremo316.pdf
1167# From Germ��n Poo-Caama��o (2008-03-03):
1168# Due to drought, Chile extends Daylight Time in three weeks. This
1169# is one-time change (Saturday 3/29 at 24:00 for America/Santiago
1170# and Saturday 3/29 at 22:00 for Pacific/Easter)
1171# The Supreme Decree is located at
1172# http://www.shoa.cl/servicios/supremo316.pdf
1137# and the instructions for 2008 are located in:
1138# http://www.horaoficial.cl/cambio.htm
1139
1173#
1140# From Jos�� Miguel Garrido (2008-03-05):
1174# From Jos�� Miguel Garrido (2008-03-05):
1141# ...
1142# You could see the announces of the change on
1143# http://www.shoa.cl/noticias/2008/04hora/hora.htm
1144
1145# From Angel Chiang (2010-03-04):
1146# Subject: DST in Chile exceptionally extended to 3 April due to earthquake
1147# http://www.gobiernodechile.cl/viewNoticia.aspx?idArticulo=30098
1175# http://www.shoa.cl/noticias/2008/04hora/hora.htm
1176
1177# From Angel Chiang (2010-03-04):
1178# Subject: DST in Chile exceptionally extended to 3 April due to earthquake
1179# http://www.gobiernodechile.cl/viewNoticia.aspx?idArticulo=30098
1148# (in Spanish, last paragraph).
1149#
1180#
1150# This is breaking news. There should be more information available later.
1151
1152# From Arthur David Olson (2010-03-06):
1153# Angel Chiang's message confirmed by Julio Pacheco; Julio provided a patch.
1154
1181# From Arthur David Olson (2010-03-06):
1182# Angel Chiang's message confirmed by Julio Pacheco; Julio provided a patch.
1183
1155# From Glenn Eychaner (2011-03-02):
1156# It appears that the Chilean government has decided to postpone the
1157# change from summer time to winter time again, by three weeks to April
1158# 2nd:
1159# http://www.emol.com/noticias/nacional/detalle/detallenoticias.asp?idnoticia=467651
1160#
1161# This is not yet reflected in the official "cambio de hora" site, but
1162# probably will be soon:
1163# http://www.horaoficial.cl/cambio.htm
1164
1165# From Arthur David Olson (2011-03-02):
1166# The emol.com article mentions a water shortage as the cause of the
1167# postponement, which may mean that it's not a permanent change.
1168
1169# From Glenn Eychaner (2011-03-28):
1184# From Glenn Eychaner (2011-03-28):
1170# The article:
1171# http://diario.elmercurio.com/2011/03/28/_portada/_portada/noticias/7565897A-CA86-49E6-9E03-660B21A4883E.htm?id=3D{7565897A-CA86-49E6-9E03-660B21A4883E}
1185# http://diario.elmercurio.com/2011/03/28/_portada/_portada/noticias/7565897A-CA86-49E6-9E03-660B21A4883E.htm?id=3D{7565897A-CA86-49E6-9E03-660B21A4883E}
1172#
1173# In English:
1174# Chile's clocks will go back an hour this year on the 7th of May instead
1175# of this Saturday. They will go forward again the 3rd Saturday in
1186# In English:
1187# Chile's clocks will go back an hour this year on the 7th of May instead
1188# of this Saturday. They will go forward again the 3rd Saturday in
1176# August, not in October as they have since 1968. This is a pilot plan
1177# which will be reevaluated in 2012.
1189# August, not in October as they have since 1968.
1178
1179# From Mauricio Parada (2012-02-22), translated by Glenn Eychaner (2012-02-23):
1180# As stated in the website of the Chilean Energy Ministry
1181# http://www.minenergia.cl/ministerio/noticias/generales/gobierno-anuncia-fechas-de-cambio-de.html
1182# The Chilean Government has decided to postpone the entrance into winter time
1190
1191# From Mauricio Parada (2012-02-22), translated by Glenn Eychaner (2012-02-23):
1192# As stated in the website of the Chilean Energy Ministry
1193# http://www.minenergia.cl/ministerio/noticias/generales/gobierno-anuncia-fechas-de-cambio-de.html
1194# The Chilean Government has decided to postpone the entrance into winter time
1183# (to leave DST) from March 11 2012 to April 28th 2012. The decision has not
1184# been yet formalized but it will within the next days.
1195# (to leave DST) from March 11 2012 to April 28th 2012....
1185# Quote from the website communication:
1186#
1187# 6. For the year 2012, the dates of entry into winter time will be as follows:
1188# a. Saturday April 28, 2012, clocks should go back 60 minutes; that is, at
1189# 23:59:59, instead of passing to 0:00, the time should be adjusted to be 23:00
1190# of the same day.
1191# b. Saturday, September 1, 2012, clocks should go forward 60 minutes; that is,
1192# at 23:59:59, instead of passing to 0:00, the time should be adjusted to be

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1209# From Eduardo Romero Urra (2015-03-03):
1210# Today has been published officially that Chile will use the DST time
1211# permanently until March 25 of 2017
1212# http://www.diariooficial.interior.gob.cl/media/2015/03/03/1-large.jpg
1213#
1214# From Paul Eggert (2015-03-03):
1215# For now, assume that the extension will persist indefinitely.
1216
1196# Quote from the website communication:
1197#
1198# 6. For the year 2012, the dates of entry into winter time will be as follows:
1199# a. Saturday April 28, 2012, clocks should go back 60 minutes; that is, at
1200# 23:59:59, instead of passing to 0:00, the time should be adjusted to be 23:00
1201# of the same day.
1202# b. Saturday, September 1, 2012, clocks should go forward 60 minutes; that is,
1203# at 23:59:59, instead of passing to 0:00, the time should be adjusted to be

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1220# From Eduardo Romero Urra (2015-03-03):
1221# Today has been published officially that Chile will use the DST time
1222# permanently until March 25 of 2017
1223# http://www.diariooficial.interior.gob.cl/media/2015/03/03/1-large.jpg
1224#
1225# From Paul Eggert (2015-03-03):
1226# For now, assume that the extension will persist indefinitely.
1227
1217# NOTE: ChileAQ rules for Antarctic bases are stored separately in the
1218# 'antarctica' file.
1219
1220# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1228# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1221Rule Chile 1927 1932 - Sep 1 0:00 1:00 S
1229Rule Chile 1927 1931 - Sep 1 0:00 1:00 S
1222Rule Chile 1928 1932 - Apr 1 0:00 0 -
1230Rule Chile 1928 1932 - Apr 1 0:00 0 -
1223Rule Chile 1942 only - Jun 1 4:00u 0 -
1224Rule Chile 1942 only - Aug 1 5:00u 1:00 S
1225Rule Chile 1946 only - Jul 15 4:00u 1:00 S
1226Rule Chile 1946 only - Sep 1 3:00u 0:00 -
1227Rule Chile 1947 only - Apr 1 4:00u 0 -
1228Rule Chile 1968 only - Nov 3 4:00u 1:00 S
1229Rule Chile 1969 only - Mar 30 3:00u 0 -
1230Rule Chile 1969 only - Nov 23 4:00u 1:00 S
1231Rule Chile 1970 only - Mar 29 3:00u 0 -
1232Rule Chile 1971 only - Mar 14 3:00u 0 -
1233Rule Chile 1970 1972 - Oct Sun>=9 4:00u 1:00 S
1234Rule Chile 1972 1986 - Mar Sun>=9 3:00u 0 -
1235Rule Chile 1973 only - Sep 30 4:00u 1:00 S
1236Rule Chile 1974 1987 - Oct Sun>=9 4:00u 1:00 S
1237Rule Chile 1987 only - Apr 12 3:00u 0 -
1231Rule Chile 1968 only - Nov 3 4:00u 1:00 S
1232Rule Chile 1969 only - Mar 30 3:00u 0 -
1233Rule Chile 1969 only - Nov 23 4:00u 1:00 S
1234Rule Chile 1970 only - Mar 29 3:00u 0 -
1235Rule Chile 1971 only - Mar 14 3:00u 0 -
1236Rule Chile 1970 1972 - Oct Sun>=9 4:00u 1:00 S
1237Rule Chile 1972 1986 - Mar Sun>=9 3:00u 0 -
1238Rule Chile 1973 only - Sep 30 4:00u 1:00 S
1239Rule Chile 1974 1987 - Oct Sun>=9 4:00u 1:00 S
1240Rule Chile 1987 only - Apr 12 3:00u 0 -
1238Rule Chile 1988 1989 - Mar Sun>=9 3:00u 0 -
1239Rule Chile 1988 only - Oct Sun>=1 4:00u 1:00 S
1240Rule Chile 1989 only - Oct Sun>=9 4:00u 1:00 S
1241Rule Chile 1990 only - Mar 18 3:00u 0 -
1241Rule Chile 1988 1990 - Mar Sun>=9 3:00u 0 -
1242Rule Chile 1988 1989 - Oct Sun>=9 4:00u 1:00 S
1242Rule Chile 1990 only - Sep 16 4:00u 1:00 S
1243Rule Chile 1991 1996 - Mar Sun>=9 3:00u 0 -
1244Rule Chile 1991 1997 - Oct Sun>=9 4:00u 1:00 S
1245Rule Chile 1997 only - Mar 30 3:00u 0 -
1246Rule Chile 1998 only - Mar Sun>=9 3:00u 0 -
1247Rule Chile 1998 only - Sep 27 4:00u 1:00 S
1248Rule Chile 1999 only - Apr 4 3:00u 0 -
1249Rule Chile 1999 2010 - Oct Sun>=9 4:00u 1:00 S

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1256Rule Chile 2011 only - May Sun>=2 3:00u 0 -
1257Rule Chile 2011 only - Aug Sun>=16 4:00u 1:00 S
1258Rule Chile 2012 2015 - Apr Sun>=23 3:00u 0 -
1259Rule Chile 2012 2014 - Sep Sun>=2 4:00u 1:00 S
1260# IATA SSIM anomalies: (1992-02) says 1992-03-14;
1261# (1996-09) says 1998-03-08. Ignore these.
1262# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1263Zone America/Santiago -4:42:46 - LMT 1890
1243Rule Chile 1990 only - Sep 16 4:00u 1:00 S
1244Rule Chile 1991 1996 - Mar Sun>=9 3:00u 0 -
1245Rule Chile 1991 1997 - Oct Sun>=9 4:00u 1:00 S
1246Rule Chile 1997 only - Mar 30 3:00u 0 -
1247Rule Chile 1998 only - Mar Sun>=9 3:00u 0 -
1248Rule Chile 1998 only - Sep 27 4:00u 1:00 S
1249Rule Chile 1999 only - Apr 4 3:00u 0 -
1250Rule Chile 1999 2010 - Oct Sun>=9 4:00u 1:00 S

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1257Rule Chile 2011 only - May Sun>=2 3:00u 0 -
1258Rule Chile 2011 only - Aug Sun>=16 4:00u 1:00 S
1259Rule Chile 2012 2015 - Apr Sun>=23 3:00u 0 -
1260Rule Chile 2012 2014 - Sep Sun>=2 4:00u 1:00 S
1261# IATA SSIM anomalies: (1992-02) says 1992-03-14;
1262# (1996-09) says 1998-03-08. Ignore these.
1263# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1264Zone America/Santiago -4:42:46 - LMT 1890
1264 -4:42:46 - SMT 1910 # Santiago Mean Time
1265 -4:42:46 - SMT 1910 Jan 10 # Santiago Mean Time
1265 -5:00 - CLT 1916 Jul 1 # Chile Time
1266 -5:00 - CLT 1916 Jul 1 # Chile Time
1266 -4:42:46 - SMT 1918 Sep 1 # Santiago Mean Time
1267 -4:00 - CLT 1919 Jul 1 # Chile Time
1268 -4:42:46 - SMT 1927 Sep 1 # Santiago Mean Time
1269 -5:00 Chile CL%sT 1947 May 22 # Chile Time
1267 -4:42:46 - SMT 1918 Sep 10
1268 -4:00 - CLT 1919 Jul 1
1269 -4:42:46 - SMT 1927 Sep 1
1270 -5:00 Chile CL%sT 1932 Sep 1
1271 -4:00 - CLT 1942 Jun 1
1272 -5:00 - CLT 1942 Aug 1
1273 -4:00 - CLT 1946 Jul 15
1274 -4:00 1:00 CLST 1946 Sep 1 # central Chile
1275 -4:00 - CLT 1947 Apr 1
1276 -5:00 - CLT 1947 May 21 23:00
1270 -4:00 Chile CL%sT 2015 Apr 26 3:00u
1271 -3:00 - CLT
1277 -4:00 Chile CL%sT 2015 Apr 26 3:00u
1278 -3:00 - CLT
1272Zone Pacific/Easter -7:17:44 - LMT 1890
1279Zone Pacific/Easter -7:17:28 - LMT 1890
1273 -7:17:28 - EMT 1932 Sep # Easter Mean Time
1274 -7:00 Chile EAS%sT 1982 Mar 14 3:00u # Easter Time
1275 -6:00 Chile EAS%sT 2015 Apr 26 3:00u
1276 -5:00 - EAST
1277#
1278# Salas y G��mez Island is uninhabited.
1279# Other Chilean locations, including Juan Fern��ndez Is, Desventuradas Is,
1280# and Antarctic bases, are like America/Santiago.
1281
1280 -7:17:28 - EMT 1932 Sep # Easter Mean Time
1281 -7:00 Chile EAS%sT 1982 Mar 14 3:00u # Easter Time
1282 -6:00 Chile EAS%sT 2015 Apr 26 3:00u
1283 -5:00 - EAST
1284#
1285# Salas y G��mez Island is uninhabited.
1286# Other Chilean locations, including Juan Fern��ndez Is, Desventuradas Is,
1287# and Antarctic bases, are like America/Santiago.
1288
1289# Antarctic base using South American rules
1290# (See the file 'antarctica' for more.)
1291#
1292# Palmer, Anvers Island, since 1965 (moved 2 miles in 1968)
1293#
1294# From Ethan Dicks (1996-10-06):
1295# It keeps the same time as Punta Arenas, Chile, because, just like us
1296# and the South Pole, that's the other end of their supply line....
1297# I verified with someone who was there that since 1980,
1298# Palmer has followed Chile. Prior to that, before the Falklands War,
1299# Palmer used to be supplied from Argentina.
1300#
1301# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1302Zone Antarctica/Palmer 0 - zzz 1965
1303 -4:00 Arg AR%sT 1969 Oct 5
1304 -3:00 Arg AR%sT 1982 May
1305 -4:00 Chile CL%sT 2015 Apr 26 3:00u
1306 -3:00 - CLT
1307
1282# Colombia
1283
1284# Milne gives 4:56:16.4 for Bogot�� time in 1899; round to nearest. He writes,
1285# "A variation of fifteen minutes in the public clocks of Bogota is not rare."
1286
1287# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1288Rule CO 1992 only - May 3 0:00 1:00 S
1289Rule CO 1993 only - Apr 4 0:00 0 -

--- 424 unchanged lines hidden ---
1308# Colombia
1309
1310# Milne gives 4:56:16.4 for Bogot�� time in 1899; round to nearest. He writes,
1311# "A variation of fifteen minutes in the public clocks of Bogota is not rare."
1312
1313# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1314Rule CO 1992 only - May 3 0:00 1:00 S
1315Rule CO 1993 only - Apr 4 0:00 0 -

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