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53751fd5 | 1 | # <pre> |
a468a1d4 UD |
2 | # @(#)southamerica 8.36 |
3 | # This file is in the public domain, so clarified as of | |
4 | # 2009-05-17 by Arthur David Olson. | |
28f540f4 RM |
5 | |
6 | # This data is by no means authoritative; if you think you know better, | |
7 | # go ahead and edit the file (and please send any changes to | |
8 | # tz@elsie.nci.nih.gov for general use in the future). | |
9 | ||
11bf311e | 10 | # From Paul Eggert (2006-03-22): |
28f540f4 | 11 | # A good source for time zone historical data outside the U.S. is |
11bf311e UD |
12 | # Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition), |
13 | # San Diego: ACS Publications, Inc. (2003). | |
8a523922 | 14 | # |
1f5649f8 | 15 | # Gwillim Law writes that a good source |
8a523922 UD |
16 | # for recent time zone data is the International Air Transport |
17 | # Association's Standard Schedules Information Manual (IATA SSIM), | |
18 | # published semiannually. Law sent in several helpful summaries | |
19 | # of the IATA's data after 1990. | |
20 | # | |
11bf311e UD |
21 | # Except where otherwise noted, Shanks & Pottenger is the source for |
22 | # entries through 1990, and IATA SSIM is the source for entries afterwards. | |
28f540f4 | 23 | # |
569c558c UD |
24 | # Earlier editions of these tables used the North American style (e.g. ARST and |
25 | # ARDT for Argentine Standard and Daylight Time), but the following quote | |
26 | # suggests that it's better to use European style (e.g. ART and ARST). | |
27 | # I suggest the use of _Summer time_ instead of the more cumbersome | |
28 | # _daylight-saving time_. _Summer time_ seems to be in general use | |
29 | # in Europe and South America. | |
30 | # -- E O Cutler, _New York Times_ (1937-02-14), quoted in | |
31 | # H L Mencken, _The American Language: Supplement I_ (1960), p 466 | |
38c097ca UD |
32 | # |
33 | # Earlier editions of these tables also used the North American style | |
34 | # for time zones in Brazil, but this was incorrect, as Brazilians say | |
35 | # "summer time". Reinaldo Goulart, a Sao Paulo businessman active in | |
36 | # the railroad sector, writes (1999-07-06): | |
37 | # The subject of time zones is currently a matter of discussion/debate in | |
38 | # Brazil. Let's say that "the Brasilia time" is considered the | |
39 | # "official time" because Brasilia is the capital city. | |
40 | # The other three time zones are called "Brasilia time "minus one" or | |
41 | # "plus one" or "plus two". As far as I know there is no such | |
42 | # name/designation as "Eastern Time" or "Central Time". | |
43 | # So I invented the following (English-language) abbreviations for now. | |
44 | # Corrections are welcome! | |
45 | # std dst | |
46 | # -2:00 FNT FNST Fernando de Noronha | |
47 | # -3:00 BRT BRST Brasilia | |
48 | # -4:00 AMT AMST Amazon | |
49 | # -5:00 ACT ACST Acre | |
28f540f4 RM |
50 | |
51 | ############################################################################### | |
52 | ||
53 | ############################################################################### | |
54 | ||
55 | # Argentina | |
56 | ||
b5791037 | 57 | # From Bob Devine (1988-01-28): |
28f540f4 RM |
58 | # Argentina: first Sunday in October to first Sunday in April since 1976. |
59 | # Double Summer time from 1969 to 1974. Switches at midnight. | |
60 | ||
b5791037 | 61 | # From U. S. Naval Observatory (1988-01-199): |
28f540f4 RM |
62 | # ARGENTINA 3 H BEHIND UTC |
63 | ||
6c49b464 | 64 | # From Hernan G. Otero (1995-06-26): |
6bc31da0 | 65 | # I am sending modifications to the Argentine time zone table... |
3d61b63c RM |
66 | # AR was chosen because they are the ISO letters that represent Argentina. |
67 | ||
28f540f4 | 68 | # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S |
569c558c UD |
69 | Rule Arg 1930 only - Dec 1 0:00 1:00 S |
70 | Rule Arg 1931 only - Apr 1 0:00 0 - | |
71 | Rule Arg 1931 only - Oct 15 0:00 1:00 S | |
72 | Rule Arg 1932 1940 - Mar 1 0:00 0 - | |
73 | Rule Arg 1932 1939 - Nov 1 0:00 1:00 S | |
74 | Rule Arg 1940 only - Jul 1 0:00 1:00 S | |
75 | Rule Arg 1941 only - Jun 15 0:00 0 - | |
76 | Rule Arg 1941 only - Oct 15 0:00 1:00 S | |
77 | Rule Arg 1943 only - Aug 1 0:00 0 - | |
78 | Rule Arg 1943 only - Oct 15 0:00 1:00 S | |
79 | Rule Arg 1946 only - Mar 1 0:00 0 - | |
80 | Rule Arg 1946 only - Oct 1 0:00 1:00 S | |
81 | Rule Arg 1963 only - Oct 1 0:00 0 - | |
82 | Rule Arg 1963 only - Dec 15 0:00 1:00 S | |
83 | Rule Arg 1964 1966 - Mar 1 0:00 0 - | |
84 | Rule Arg 1964 1966 - Oct 15 0:00 1:00 S | |
3fc2f6c8 | 85 | Rule Arg 1967 only - Apr 2 0:00 0 - |
0af4c646 UD |
86 | Rule Arg 1967 1968 - Oct Sun>=1 0:00 1:00 S |
87 | Rule Arg 1968 1969 - Apr Sun>=1 0:00 0 - | |
569c558c UD |
88 | Rule Arg 1974 only - Jan 23 0:00 1:00 S |
89 | Rule Arg 1974 only - May 1 0:00 0 - | |
569c558c | 90 | Rule Arg 1988 only - Dec 1 0:00 1:00 S |
3d61b63c | 91 | # |
6c49b464 | 92 | # From Hernan G. Otero (1995-06-26): |
3d61b63c RM |
93 | # These corrections were contributed by InterSoft Argentina S.A., |
94 | # obtaining the data from the: | |
95 | # Talleres de Hidrografia Naval Argentina | |
6bc31da0 | 96 | # (Argentine Naval Hydrography Institute) |
569c558c UD |
97 | Rule Arg 1989 1993 - Mar Sun>=1 0:00 0 - |
98 | Rule Arg 1989 1992 - Oct Sun>=15 0:00 1:00 S | |
3d61b63c | 99 | # |
6c49b464 | 100 | # From Hernan G. Otero (1995-06-26): |
3d61b63c RM |
101 | # From this moment on, the law that mandated the daylight saving |
102 | # time corrections was derogated and no more modifications | |
103 | # to the time zones (for daylight saving) are now made. | |
104 | # | |
0af4c646 UD |
105 | # From Rives McDow (2000-01-10): |
106 | # On October 3, 1999, 0:00 local, Argentina implemented daylight savings time, | |
107 | # which did not result in the switch of a time zone, as they stayed 9 hours | |
3459f702 UD |
108 | # from the International Date Line. |
109 | Rule Arg 1999 only - Oct Sun>=1 0:00 1:00 S | |
fd490ac8 UD |
110 | # From Paul Eggert (2007-12-28): |
111 | # DST was set to expire on March 5, not March 3, but since it was converted | |
112 | # to standard time on March 3 it's more convenient for us to pretend that | |
113 | # it ended on March 3. | |
114 | Rule Arg 2000 only - Mar 3 0:00 0 - | |
30b416ea UD |
115 | # |
116 | # From Peter Gradelski via Steffen Thorsen (2000-03-01): | |
a133e4fa | 117 | # We just checked with our Sao Paulo office and they say the government of |
30b416ea UD |
118 | # Argentina decided not to become one of the countries that go on or off DST. |
119 | # So Buenos Aires should be -3 hours from GMT at all times. | |
0af4c646 | 120 | # |
6c49b464 | 121 | # From Fabian L. Arce Jofre (2000-04-04): |
3459f702 UD |
122 | # The law that claimed DST for Argentina was derogated by President Fernando |
123 | # de la Rua on March 2, 2000, because it would make people spend more energy | |
124 | # in the winter time, rather than less. The change took effect on March 3. | |
125 | # | |
1f5649f8 UD |
126 | # From Mariano Absatz (2001-06-06): |
127 | # one of the major newspapers here in Argentina said that the 1999 | |
128 | # Timezone Law (which never was effectively applied) will (would?) be | |
129 | # in effect.... The article is at | |
130 | # http://ar.clarin.com/diario/2001-06-06/e-01701.htm | |
131 | # ... The Law itself is "Ley No 25155", sanctioned on 1999-08-25, enacted | |
132 | # 1999-09-17, and published 1999-09-21. The official publication is at: | |
133 | # http://www.boletin.jus.gov.ar/BON/Primera/1999/09-Septiembre/21/PDF/BO21-09-99LEG.PDF | |
134 | # Regretfully, you have to subscribe (and pay) for the on-line version.... | |
135 | # | |
136 | # (2001-06-12): | |
137 | # the timezone for Argentina will not change next Sunday. | |
138 | # Apparently it will do so on Sunday 24th.... | |
139 | # http://ar.clarin.com/diario/2001-06-12/s-03501.htm | |
140 | # | |
141 | # (2001-06-25): | |
142 | # Last Friday (yes, the last working day before the date of the change), the | |
143 | # Senate annulled the 1999 law that introduced the changes later postponed. | |
144 | # http://www.clarin.com.ar/diario/2001-06-22/s-03601.htm | |
145 | # It remains the vote of the Deputies..., but it will be the same.... | |
146 | # This kind of things had always been done this way in Argentina. | |
147 | # We are still -03:00 all year round in all of the country. | |
148 | # | |
fd490ac8 UD |
149 | # From Steffen Thorsen (2007-12-21): |
150 | # A user (Leonardo Chaim) reported that Argentina will adopt DST.... | |
151 | # all of the country (all Zone-entries) are affected. News reports like | |
152 | # http://www.lanacion.com.ar/opinion/nota.asp?nota_id=973037 indicate | |
153 | # that Argentina will use DST next year as well, from October to | |
154 | # March, although exact rules are not given. | |
155 | # | |
156 | # From Jesper Norgaard Welen (2007-12-26) | |
157 | # The last hurdle of Argentina DST is over, the proposal was approved in | |
158 | # the lower chamber too (Deputados) with a vote 192 for and 2 against. | |
159 | # By the way thanks to Mariano Absatz and Daniel Mario Vega for the link to | |
160 | # the original scanned proposal, where the dates and the zero hours are | |
161 | # clear and unambiguous...This is the article about final approval: | |
162 | # <a href="http://www.lanacion.com.ar/politica/nota.asp?nota_id=973996"> | |
163 | # http://www.lanacion.com.ar/politica/nota.asp?nota_id=973996 | |
164 | # </a> | |
165 | # | |
166 | # From Paul Eggert (2007-12-22): | |
167 | # For dates after mid-2008, the following rules are my guesses and | |
168 | # are quite possibly wrong, but are more likely than no DST at all. | |
97898201 UD |
169 | |
170 | # From Alexander Krivenyshev (2008-09-05): | |
171 | # As per message from Carlos Alberto Fonseca Arauz (Nicaragua), | |
172 | # Argentina will start DST on Sunday October 19, 2008. | |
173 | # | |
174 | # <a href="http://www.worldtimezone.com/dst_news/dst_news_argentina03.html"> | |
175 | # http://www.worldtimezone.com/dst_news/dst_news_argentina03.html | |
176 | # </a> | |
177 | # OR | |
178 | # <a href="http://www.impulsobaires.com.ar/nota.php?id=57832 (in spanish)"> | |
179 | # http://www.impulsobaires.com.ar/nota.php?id=57832 (in spanish) | |
180 | # </a> | |
181 | ||
a468a1d4 UD |
182 | # From Rodrigo Severo (2008-10-06): |
183 | # Here is some info available at a Gentoo bug related to TZ on Argentina's DST: | |
184 | # ... | |
185 | # ------- Comment #1 from [jmdocile] 2008-10-06 16:28 0000 ------- | |
186 | # Hi, there is a problem with timezone-data-2008e and maybe with | |
187 | # timezone-data-2008f | |
188 | # Argentinian law [Number] 25.155 is no longer valid. | |
189 | # <a href="http://www.infoleg.gov.ar/infolegInternet/anexos/60000-64999/60036/norma.htm"> | |
190 | # http://www.infoleg.gov.ar/infolegInternet/anexos/60000-64999/60036/norma.htm | |
191 | # </a> | |
192 | # The new one is law [Number] 26.350 | |
193 | # <a href="http://www.infoleg.gov.ar/infolegInternet/anexos/135000-139999/136191/norma.htm"> | |
194 | # http://www.infoleg.gov.ar/infolegInternet/anexos/135000-139999/136191/norma.htm | |
195 | # </a> | |
196 | # So there is no summer time in Argentina for now. | |
197 | ||
198 | # From Mariano Absatz (2008-10-20): | |
199 | # Decree 1693/2008 applies Law 26.350 for the summer 2008/2009 establishing DST in Argentina | |
200 | # From 2008-10-19 until 2009-03-15 | |
201 | # <a href="http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=16102008&pi=3&pf=4&s=0&sec=01"> | |
202 | # http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=16102008&pi=3&pf=4&s=0&sec=01 | |
203 | # </a> | |
204 | # | |
205 | # Decree 1705/2008 excepting 12 Provinces from applying DST in the summer 2008/2009: | |
206 | # Catamarca, La Rioja, Mendoza, Salta, San Juan, San Luis, La Pampa, Neuquen, Rio Negro, Chubut, Santa Cruz | |
207 | # and Tierra del Fuego | |
208 | # <a href="http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=17102008&pi=1&pf=1&s=0&sec=01"> | |
209 | # http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=17102008&pi=1&pf=1&s=0&sec=01 | |
210 | # </a> | |
211 | # | |
212 | # Press release 235 dated Saturday October 18th, from the Government of the Province of Jujuy saying | |
213 | # it will not apply DST either (even when it was not included in Decree 1705/2008) | |
214 | # <a href="http://www.jujuy.gov.ar/index2/partes_prensa/18_10_08/235-181008.doc"> | |
215 | # http://www.jujuy.gov.ar/index2/partes_prensa/18_10_08/235-181008.doc | |
216 | # </a> | |
217 | ||
fd490ac8 UD |
218 | Rule Arg 2007 only - Dec 30 0:00 1:00 S |
219 | Rule Arg 2008 max - Mar Sun>=15 0:00 0 - | |
97898201 | 220 | Rule Arg 2008 max - Oct Sun>=15 0:00 1:00 S |
fd490ac8 | 221 | |
d1091a21 UD |
222 | # From Mariano Absatz (2004-05-21): |
223 | # Today it was officially published that the Province of Mendoza is changing | |
224 | # its timezone this winter... starting tomorrow night.... | |
225 | # http://www.gobernac.mendoza.gov.ar/boletin/pdf/20040521-27158-normas.pdf | |
226 | # From Paul Eggert (2004-05-24): | |
227 | # It's Law No. 7,210. This change is due to a public power emergency, so for | |
228 | # now we'll assume it's for this year only. | |
3fc2f6c8 | 229 | # |
11bf311e | 230 | # From Paul Eggert (2006-03-22): |
3fc2f6c8 | 231 | # <a href="http://www.spicasc.net/horvera.html"> |
11bf311e | 232 | # Hora de verano para la Republica Argentina (2003-06-08) |
3fc2f6c8 UD |
233 | # </a> says that standard time in Argentina from 1894-10-31 |
234 | # to 1920-05-01 was -4:16:48.25. Go with this more-precise value | |
11bf311e | 235 | # over Shanks & Pottenger. |
d1091a21 UD |
236 | # |
237 | # From Mariano Absatz (2004-06-05): | |
238 | # These media articles from a major newspaper mostly cover the current state: | |
239 | # http://www.lanacion.com.ar/04/05/27/de_604825.asp | |
240 | # http://www.lanacion.com.ar/04/05/28/de_605203.asp | |
241 | # | |
242 | # The following eight (8) provinces pulled clocks back to UTC-04:00 at | |
243 | # midnight Monday May 31st. (that is, the night between 05/31 and 06/01). | |
244 | # Apparently, all nine provinces would go back to UTC-03:00 at the same | |
245 | # time in October 17th. | |
246 | # | |
247 | # Catamarca, Chubut, La Rioja, San Juan, San Luis, Santa Cruz, | |
248 | # Tierra del Fuego, Tucuman. | |
249 | # | |
250 | # From Mariano Absatz (2004-06-14): | |
251 | # ... this weekend, the Province of Tucuman decided it'd go back to UTC-03:00 | |
252 | # yesterday midnight (that is, at 24:00 Saturday 12th), since the people's | |
253 | # annoyance with the change is much higher than the power savings obtained.... | |
254 | # | |
255 | # From Gwillim Law (2004-06-14): | |
256 | # http://www.lanacion.com.ar/04/06/10/de_609078.asp ... | |
257 | # "The time change in Tierra del Fuego was a conflicted decision from | |
258 | # the start. The government had decreed that the measure would take | |
259 | # effect on June 1, but a normative error forced the new time to begin | |
260 | # three days earlier, from a Saturday to a Sunday.... | |
261 | # Our understanding was that the change was originally scheduled to take place | |
262 | # on June 1 at 00:00 in Chubut, Santa Cruz, Tierra del Fuego (and some other | |
263 | # provinces). Sunday was May 30, only two days earlier. So the article | |
264 | # contains a contradiction. I would give more credence to the Saturday/Sunday | |
265 | # date than the "three days earlier" phrase, and conclude that Tierra del | |
266 | # Fuego set its clocks back at 2004-05-30 00:00. | |
daa6fd88 UD |
267 | # |
268 | # From Steffen Thorsen (2004-10-05): | |
269 | # The previous law 7210 which changed the province of Mendoza's time zone | |
270 | # back in May have been modified slightly in a new law 7277, which set the | |
271 | # new end date to 2004-09-26 (original date was 2004-10-17). | |
272 | # http://www.gobernac.mendoza.gov.ar/boletin/pdf/20040924-27244-normas.pdf | |
273 | # | |
274 | # From Mariano Absatz (2004-10-05): | |
275 | # San Juan changed from UTC-03:00 to UTC-04:00 at midnight between | |
276 | # Sunday, May 30th and Monday, May 31st. It changed back to UTC-03:00 | |
277 | # at midnight between Saturday, July 24th and Sunday, July 25th.... | |
278 | # http://www.sanjuan.gov.ar/prensa/archivo/000329.html | |
279 | # http://www.sanjuan.gov.ar/prensa/archivo/000426.html | |
280 | # http://www.sanjuan.gov.ar/prensa/archivo/000441.html | |
3fc2f6c8 | 281 | |
fd490ac8 UD |
282 | # From Alex Krivenyshev (2008-01-17): |
283 | # Here are articles that Argentina Province San Luis is planning to end DST | |
284 | # as earlier as upcoming Monday January 21, 2008 or February 2008: | |
285 | # | |
286 | # Provincia argentina retrasa reloj y marca diferencia con resto del pais | |
287 | # (Argentine Province delayed clock and mark difference with the rest of the | |
288 | # country) | |
289 | # <a href="http://cl.invertia.com/noticias/noticia.aspx?idNoticia=200801171849_EFE_ET4373&idtel"> | |
290 | # http://cl.invertia.com/noticias/noticia.aspx?idNoticia=200801171849_EFE_ET4373&idtel | |
291 | # </a> | |
292 | # | |
293 | # Es inminente que en San Luis atrasen una hora los relojes | |
294 | # (It is imminent in San Luis clocks one hour delay) | |
295 | # <a href="http://www.lagaceta.com.ar/vernotae.asp?id_nota=253414"> | |
296 | # http://www.lagaceta.com.ar/vernotae.asp?id_nota=253414 | |
297 | # </a> | |
298 | # | |
299 | # <a href="http://www.worldtimezone.net/dst_news/dst_news_argentina02.html"> | |
300 | # http://www.worldtimezone.net/dst_news/dst_news_argentina02.html | |
301 | # </a> | |
302 | ||
303 | # From Jesper Norgaard Welen (2008-01-18): | |
304 | # The page of the San Luis provincial government | |
305 | # <a href="http://www.sanluis.gov.ar/notas.asp?idCanal=0&id=22812"> | |
306 | # http://www.sanluis.gov.ar/notas.asp?idCanal=0&id=22812 | |
307 | # </a> | |
308 | # confirms what Alex Krivenyshev has earlier sent to the tz | |
309 | # emailing list about that San Luis plans to return to standard | |
310 | # time much earlier than the rest of the country. It also | |
311 | # confirms that upon request the provinces San Juan and Mendoza | |
312 | # refused to follow San Luis in this change. | |
313 | # | |
314 | # The change is supposed to take place Monday the 21.st at 0:00 | |
315 | # hours. As far as I understand it if this goes ahead, we need | |
316 | # a new timezone for San Luis (although there are also documented | |
317 | # independent changes in the southamerica file of San Luis in | |
318 | # 1990 and 1991 which has not been confirmed). | |
319 | ||
320 | # From Jesper Norgaard Welen (2008-01-25): | |
321 | # Unfortunately the below page has become defunct, about the San Luis | |
322 | # time change. Perhaps because it now is part of a group of pages "Most | |
323 | # important pages of 2008." | |
324 | # | |
325 | # You can use | |
326 | # <a href="http://www.sanluis.gov.ar/notas.asp?idCanal=8141&id=22834"> | |
327 | # http://www.sanluis.gov.ar/notas.asp?idCanal=8141&id=22834 | |
328 | # </a> | |
329 | # instead it seems. Or use "Buscador" from the main page of the San Luis | |
330 | # government, and fill in "huso" and click OK, and you will get 3 pages | |
331 | # from which the first one is identical to the above. | |
332 | ||
333 | # From Mariano Absatz (2008-01-28): | |
334 | # I can confirm that the Province of San Luis (and so far only that | |
335 | # province) decided to go back to UTC-3 effective midnight Jan 20th 2008 | |
336 | # (that is, Monday 21st at 0:00 is the time the clocks were delayed back | |
337 | # 1 hour), and they intend to keep UTC-3 as their timezone all year round | |
338 | # (that is, unless they change their mind any minute now). | |
339 | # | |
340 | # So we'll have to add yet another city to 'southamerica' (I think San | |
341 | # Luis city is the mos populated city in the Province, so it'd be | |
342 | # America/Argentina/San_Luis... of course I can't remember if San Luis's | |
343 | # history of particular changes goes along with Mendoza or San Juan :-( | |
344 | # (I only remember not being able to collect hard facts about San Luis | |
345 | # back in 2004, when these provinces changed to UTC-4 for a few days, I | |
346 | # mailed them personally and never got an answer). | |
347 | ||
97898201 | 348 | # From Paul Eggert (2008-06-30): |
11bf311e UD |
349 | # Unless otherwise specified, data are from Shanks & Pottenger through 1992, |
350 | # from the IATA otherwise. As noted below, Shanks & Pottenger say that | |
97898201 UD |
351 | # America/Cordoba split into 6 subregions during 1991/1992, one of which |
352 | # was America/San_Luis, but we haven't verified this yet so for now we'll | |
353 | # keep America/Cordoba a single region rather than splitting it into the | |
354 | # other 5 subregions. | |
355 | ||
a468a1d4 UD |
356 | # From Mariano Absatz (2009-03-13): |
357 | # Yesterday (with our usual 2-day notice) the Province of San Luis | |
358 | # decided that next Sunday instead of "staying" @utc-03:00 they will go | |
359 | # to utc-04:00 until the second Saturday in October... | |
360 | # | |
361 | # The press release is at | |
362 | # <a href="http://www.sanluis.gov.ar/SL/Paginas/NoticiaDetalle.asp?TemaId=1&InfoPrensaId=3102"> | |
363 | # http://www.sanluis.gov.ar/SL/Paginas/NoticiaDetalle.asp?TemaId=1&InfoPrensaId=3102 | |
364 | # </a> | |
365 | # (I couldn't find the decree, but | |
366 | # <a href="http://www.sanluis.gov.ar"> | |
367 | # www.sanluis.gov.ar | |
368 | # <a/> | |
369 | # is the official page for the Province Government). | |
370 | # | |
371 | Content-type: text/html ]>