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
9 # From Paul Eggert (2006-03-22):
10 # A good source for time zone historical data outside the U.S. is
11 # Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition),
12 # San Diego: ACS Publications, Inc. (2003).
13 #
14 # For data circa 1899, a common source is:
15 # Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94.
16 # http://www.jstor.org/stable/1774359
17 #
18 # Gwillim Law writes that a good source
19 # for recent time zone data is the International Air Transport
20 # Association's Standard Schedules Information Manual (IATA SSIM),
21 # published semiannually. Law sent in several helpful summaries
22 # of the IATA's data after 1990.
23 #
24 # Except where otherwise noted, Shanks & Pottenger is the source for
25 # entries through 1990, and IATA SSIM is the source for entries afterwards.
26 #
27 # Earlier editions of these tables used the North American style (e.g. ARST and
28 # ARDT for Argentine Standard and Daylight Time), but the following quote
29 # suggests that it's better to use European style (e.g. ART and ARST).
30 # I suggest the use of _Summer time_ instead of the more cumbersome
31 # _daylight-saving time_. _Summer time_ seems to be in general use
32 # in Europe and South America.
33 # -- E O Cutler, _New York Times_ (1937-02-14), quoted in
34 # H L Mencken, _The American Language: Supplement I_ (1960), p 466
35 #
36 # Earlier editions of these tables also used the North American style
37 # for time zones in Brazil, but this was incorrect, as Brazilians say
38 # "summer time". Reinaldo Goulart, a São Paulo businessman active in
39 # the railroad sector, writes (1999-07-06):
40 # The subject of time zones is currently a matter of discussion/debate in
41 # Brazil. Let's say that "the Brasília time" is considered the
42 # "official time" because Brasília is the capital city.
43 # The other three time zones are called "Brasília time "minus one" or
44 # "plus one" or "plus two". As far as I know there is no such
45 # name/designation as "Eastern Time" or "Central Time".
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
1193 # 01:00 on September 2.
1194
1195 # From Steffen Thorsen (2013-02-15):
1196 # According to several news sources, Chile has extended DST this year,
1197 # they will end DST later and start DST earlier than planned. They
1198 # hope to save energy. The new end date is 2013-04-28 00:00 and new
1199 # start date is 2013-09-08 00:00....
1200 # http://www.gob.cl/informa/2013/02/15/gobierno-anuncia-fechas-de-cambio-de-hora-para-el-ano-2013.htm
1201
1202 # From José Miguel Garrido (2014-02-19):
1203 # Today appeared in the Diario Oficial a decree amending the time change
1204 # dates to 2014.
1205 # DST End: last Saturday of April 2014 (Sun 27 Apr 2014 03:00 UTC)
1206 # DST Start: first Saturday of September 2014 (Sun 07 Sep 2014 04:00 UTC)
1207 # http://www.diariooficial.interior.gob.cl//media/2014/02/19/do-20140219.pdf
1208
1209 # NOTE: ChileAQ rules for Antarctic bases are stored separately in the
1210 # 'antarctica' file.
1211
1212 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1213 Rule Chile 1927 1932 - Sep 1 0:00 1:00 S
1214 Rule Chile 1928 1932 - Apr 1 0:00 0 -
1215 Rule Chile 1942 only - Jun 1 4:00u 0 -
1216 Rule Chile 1942 only - Aug 1 5:00u 1:00 S
1217 Rule Chile 1946 only - Jul 15 4:00u 1:00 S
1218 Rule Chile 1946 only - Sep 1 3:00u 0:00 -
1219 Rule Chile 1947 only - Apr 1 4:00u 0 -
1220 Rule Chile 1968 only - Nov 3 4:00u 1:00 S
1221 Rule Chile 1969 only - Mar 30 3:00u 0 -
1222 Rule Chile 1969 only - Nov 23 4:00u 1:00 S
1223 Rule Chile 1970 only - Mar 29 3:00u 0 -
1224 Rule Chile 1971 only - Mar 14 3:00u 0 -
1225 Rule Chile 1970 1972 - Oct Sun>=9 4:00u 1:00 S
1226 Rule Chile 1972 1986 - Mar Sun>=9 3:00u 0 -
1227 Rule Chile 1973 only - Sep 30 4:00u 1:00 S
1228 Rule Chile 1974 1987 - Oct Sun>=9 4:00u 1:00 S
1230 Rule Chile 1988 1989 - Mar Sun>=9 3:00u 0 -
1231 Rule Chile 1988 only - Oct Sun>=1 4:00u 1:00 S
1232 Rule Chile 1989 only - Oct Sun>=9 4:00u 1:00 S
1233 Rule Chile 1990 only - Mar 18 3:00u 0 -
1234 Rule Chile 1990 only - Sep 16 4:00u 1:00 S
1235 Rule Chile 1991 1996 - Mar Sun>=9 3:00u 0 -
1236 Rule Chile 1991 1997 - Oct Sun>=9 4:00u 1:00 S
1237 Rule Chile 1997 only - Mar 30 3:00u 0 -
1238 Rule Chile 1998 only - Mar Sun>=9 3:00u 0 -
1239 Rule Chile 1998 only - Sep 27 4:00u 1:00 S
1240 Rule Chile 1999 only - Apr 4 3:00u 0 -
1241 Rule Chile 1999 2010 - Oct Sun>=9 4:00u 1:00 S
1242 Rule Chile 2000 2007 - Mar Sun>=9 3:00u 0 -
1243 # N.B.: the end of March 29 in Chile is March 30 in Universal time,
1244 # which is used below in specifying the transition.
1245 Rule Chile 2008 only - Mar 30 3:00u 0 -
1246 Rule Chile 2009 only - Mar Sun>=9 3:00u 0 -
1247 Rule Chile 2010 only - Apr Sun>=1 3:00u 0 -
1248 Rule Chile 2011 only - May Sun>=2 3:00u 0 -
1249 Rule Chile 2011 only - Aug Sun>=16 4:00u 1:00 S
1250 Rule Chile 2012 max - Apr Sun>=23 3:00u 0 -
1251 Rule Chile 2012 max - Sep Sun>=2 4:00u 1:00 S
1252 # IATA SSIM anomalies: (1992-02) says 1992-03-14;
1253 # (1996-09) says 1998-03-08. Ignore these.
1254 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1255 Zone America/Santiago -4:42:46 - LMT 1890
1256 -4:42:46 - SMT 1910 # Santiago Mean Time
1257 -5:00 - CLT 1916 Jul 1 # Chile Time
1258 -4:42:46 - SMT 1918 Sep 1 # Santiago Mean Time
1259 -4:00 - CLT 1919 Jul 1 # Chile Time
1260 -4:42:46 - SMT 1927 Sep 1 # Santiago Mean Time
1261 -5:00 Chile CL%sT 1947 May 22 # Chile Time
1262 -4:00 Chile CL%sT
1263 Zone Pacific/Easter -7:17:44 - LMT 1890
1264 -7:17:28 - EMT 1932 Sep # Easter Mean Time
1265 -7:00 Chile EAS%sT 1982 Mar 13 21:00 # Easter Time
1266 -6:00 Chile EAS%sT
1267 #
1268 # Salas y Gómez Island is uninhabited.
1269 # Other Chilean locations, including Juan Fernández Is, Desventuradas Is,
1270 # and Antarctic bases, are like America/Santiago.
1271
1272 # Colombia
1273
1274 # Milne gives 4:56:16.4 for Bogotá time in 1899; round to nearest. He writes,
1275 # "A variation of fifteen minutes in the public clocks of Bogota is not rare."
1276
1277 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1278 Rule CO 1992 only - May 3 0:00 1:00 S
1279 Rule CO 1993 only - Apr 4 0:00 0 -
1280 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1281 Zone America/Bogota -4:56:16 - LMT 1884 Mar 13
1282 -4:56:16 - BMT 1914 Nov 23 # Bogotá Mean Time
1283 -5:00 CO CO%sT # Colombia Time
1284 # Malpelo, Providencia, San Andres
1285 # no information; probably like America/Bogota
1286
|
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
9 # From Paul Eggert (2014-10-31):
10 #
11 # Unless otherwise specified, the source for data through 1990 is:
12 # Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition),
13 # San Diego: ACS Publications, Inc. (2003).
14 # Unfortunately this book contains many errors and cites no sources.
15 #
16 # Gwillim Law writes that a good source
17 # for recent time zone data is the International Air Transport
18 # Association's Standard Schedules Information Manual (IATA SSIM),
19 # published semiannually. Law sent in several helpful summaries
20 # of the IATA's data after 1990. Except where otherwise noted,
21 # IATA SSIM is the source for entries after 1990.
22 #
23 # For data circa 1899, a common source is:
24 # Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94.
25 # http://www.jstor.org/stable/1774359
26 #
27 # Earlier editions of these tables used the North American style (e.g. ARST and
28 # ARDT for Argentine Standard and Daylight Time), but the following quote
29 # suggests that it's better to use European style (e.g. ART and ARST).
30 # I suggest the use of _Summer time_ instead of the more cumbersome
31 # _daylight-saving time_. _Summer time_ seems to be in general use
32 # in Europe and South America.
33 # -- E O Cutler, _New York Times_ (1937-02-14), quoted in
34 # H L Mencken, _The American Language: Supplement I_ (1960), p 466
35 #
36 # Earlier editions of these tables also used the North American style
37 # for time zones in Brazil, but this was incorrect, as Brazilians say
38 # "summer time". Reinaldo Goulart, a São Paulo businessman active in
39 # the railroad sector, writes (1999-07-06):
40 # The subject of time zones is currently a matter of discussion/debate in
41 # Brazil. Let's say that "the Brasília time" is considered the
42 # "official time" because Brasília is the capital city.
43 # The other three time zones are called "Brasília time "minus one" or
44 # "plus one" or "plus two". As far as I know there is no such
45 # name/designation as "Eastern Time" or "Central Time".
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
1193 # 01:00 on September 2.
1194
1195 # From Steffen Thorsen (2013-02-15):
1196 # According to several news sources, Chile has extended DST this year,
1197 # they will end DST later and start DST earlier than planned. They
1198 # hope to save energy. The new end date is 2013-04-28 00:00 and new
1199 # start date is 2013-09-08 00:00....
1200 # http://www.gob.cl/informa/2013/02/15/gobierno-anuncia-fechas-de-cambio-de-hora-para-el-ano-2013.htm
1201
1202 # From José Miguel Garrido (2014-02-19):
1203 # Today appeared in the Diario Oficial a decree amending the time change
1204 # dates to 2014.
1205 # DST End: last Saturday of April 2014 (Sun 27 Apr 2014 03:00 UTC)
1206 # DST Start: first Saturday of September 2014 (Sun 07 Sep 2014 04:00 UTC)
1207 # http://www.diariooficial.interior.gob.cl//media/2014/02/19/do-20140219.pdf
1208
1209 # From Juan Correa (2015-01-28):
1210 # ... today the Ministry of Energy announced that Chile will drop DST, will keep
1211 # "summer time" (UTC -3 / UTC -5) all year round....
1212 # http://www.minenergia.cl/ministerio/noticias/generales/ministerio-de-energia-anuncia.html
1213
1214 # NOTE: ChileAQ rules for Antarctic bases are stored separately in the
1215 # 'antarctica' file.
1216
1217 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1218 Rule Chile 1927 1932 - Sep 1 0:00 1:00 S
1219 Rule Chile 1928 1932 - Apr 1 0:00 0 -
1220 Rule Chile 1942 only - Jun 1 4:00u 0 -
1221 Rule Chile 1942 only - Aug 1 5:00u 1:00 S
1222 Rule Chile 1946 only - Jul 15 4:00u 1:00 S
1223 Rule Chile 1946 only - Sep 1 3:00u 0:00 -
1224 Rule Chile 1947 only - Apr 1 4:00u 0 -
1225 Rule Chile 1968 only - Nov 3 4:00u 1:00 S
1226 Rule Chile 1969 only - Mar 30 3:00u 0 -
1227 Rule Chile 1969 only - Nov 23 4:00u 1:00 S
1228 Rule Chile 1970 only - Mar 29 3:00u 0 -
1229 Rule Chile 1971 only - Mar 14 3:00u 0 -
1230 Rule Chile 1970 1972 - Oct Sun>=9 4:00u 1:00 S
1231 Rule Chile 1972 1986 - Mar Sun>=9 3:00u 0 -
1232 Rule Chile 1973 only - Sep 30 4:00u 1:00 S
1233 Rule Chile 1974 1987 - Oct Sun>=9 4:00u 1:00 S
1235 Rule Chile 1988 1989 - Mar Sun>=9 3:00u 0 -
1236 Rule Chile 1988 only - Oct Sun>=1 4:00u 1:00 S
1237 Rule Chile 1989 only - Oct Sun>=9 4:00u 1:00 S
1238 Rule Chile 1990 only - Mar 18 3:00u 0 -
1239 Rule Chile 1990 only - Sep 16 4:00u 1:00 S
1240 Rule Chile 1991 1996 - Mar Sun>=9 3:00u 0 -
1241 Rule Chile 1991 1997 - Oct Sun>=9 4:00u 1:00 S
1242 Rule Chile 1997 only - Mar 30 3:00u 0 -
1243 Rule Chile 1998 only - Mar Sun>=9 3:00u 0 -
1244 Rule Chile 1998 only - Sep 27 4:00u 1:00 S
1245 Rule Chile 1999 only - Apr 4 3:00u 0 -
1246 Rule Chile 1999 2010 - Oct Sun>=9 4:00u 1:00 S
1247 Rule Chile 2000 2007 - Mar Sun>=9 3:00u 0 -
1248 # N.B.: the end of March 29 in Chile is March 30 in Universal time,
1249 # which is used below in specifying the transition.
1250 Rule Chile 2008 only - Mar 30 3:00u 0 -
1251 Rule Chile 2009 only - Mar Sun>=9 3:00u 0 -
1252 Rule Chile 2010 only - Apr Sun>=1 3:00u 0 -
1253 Rule Chile 2011 only - May Sun>=2 3:00u 0 -
1254 Rule Chile 2011 only - Aug Sun>=16 4:00u 1:00 S
1255 Rule Chile 2012 2015 - Apr Sun>=23 3:00u 0 -
1256 Rule Chile 2012 2014 - Sep Sun>=2 4:00u 1:00 S
1257 # IATA SSIM anomalies: (1992-02) says 1992-03-14;
1258 # (1996-09) says 1998-03-08. Ignore these.
1259 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1260 Zone America/Santiago -4:42:46 - LMT 1890
1261 -4:42:46 - SMT 1910 # Santiago Mean Time
1262 -5:00 - CLT 1916 Jul 1 # Chile Time
1263 -4:42:46 - SMT 1918 Sep 1 # Santiago Mean Time
1264 -4:00 - CLT 1919 Jul 1 # Chile Time
1265 -4:42:46 - SMT 1927 Sep 1 # Santiago Mean Time
1266 -5:00 Chile CL%sT 1947 May 22 # Chile Time
1267 -4:00 Chile CL%sT 2015 Apr 26 3:00u
1268 -3:00 - CLT
1269 Zone Pacific/Easter -7:17:44 - LMT 1890
1270 -7:17:28 - EMT 1932 Sep # Easter Mean Time
1271 -7:00 Chile EAS%sT 1982 Mar 13 3:00u # Easter Time
1272 -6:00 Chile EAS%sT 2015 Apr 26 3:00u
1273 -5:00 - EAST
1274 #
1275 # Salas y Gómez Island is uninhabited.
1276 # Other Chilean locations, including Juan Fernández Is, Desventuradas Is,
1277 # and Antarctic bases, are like America/Santiago.
1278
1279 # Colombia
1280
1281 # Milne gives 4:56:16.4 for Bogotá time in 1899; round to nearest. He writes,
1282 # "A variation of fifteen minutes in the public clocks of Bogota is not rare."
1283
1284 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1285 Rule CO 1992 only - May 3 0:00 1:00 S
1286 Rule CO 1993 only - Apr 4 0:00 0 -
1287 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1288 Zone America/Bogota -4:56:16 - LMT 1884 Mar 13
1289 -4:56:16 - BMT 1914 Nov 23 # Bogotá Mean Time
1290 -5:00 CO CO%sT # Colombia Time
1291 # Malpelo, Providencia, San Andres
1292 # no information; probably like America/Bogota
1293
|