Time in Argentina
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File:Time zone map of South America (2014).png
Argentina is located at a longitude that would naturally put it in the UTC−04:00 or UTC−05:00 time zone; however, it actually uses the UTC−03:00 time zone. Argentina determines whether to change clocks in observation of daylight saving time on a year-by-year basis, and individual provinces may opt out of the federal decision. At present, Argentina does not change clocks.{{citation needed|date=October 2024}}
The Argentine Hydrographic Service[http://www.hidro.gov.ar/historia/historia_shn.asp#La%20hora%20oficial Hora Oficial] {{Webarchive|url=https://web.archive.org/web/20130330132923/http://www.hidro.gov.ar/historia/historia_shn.asp#La%20hora%20oficial |date=2013-03-30 }} maintains the official national time.
History
The first official standardization of time in Argentina took place on 31 October 1894, with establishment of UTC−04:00 as the nation's standard time.{{cite web|access-date=2009-10-05|title=HORA DE VERANO PARA LA REPUBLICA ARGENTINA|url=http://www.spicasc.net/horvera.html |archive-url = https://web.archive.org/web/20030803233204/http://www.spicasc.net/horvera.html |archive-date = 2003-08-03}}
From 1920 to 1969, the official time switched biannually between UTC−04:00 as standard time in winter and UTC−03:00 as daylight saving time in summer.[http://www.timeanddate.com/worldclock/timezone.html?n=51&syear=1925 Time Changes in Buenos Aires Over the Years, 1925–1949]. TimeAndDate.com.
From 1974 to 1993, clocks advanced again, such that the official time switched biannually between UTC−03:00 as winter DST and UTC−02:00 as summer double DST.[http://www.timeanddate.com/worldclock/timezone.html?n=51&syear=1970 Time Changes in Buenos Aires Over the Years, 1970–1979]. TimeAndDate.com.
In 1993, the national time was fixed at UTC−03:00, called Argentina Time (ART;{{Cite web|url=http://www.timeanddate.com/library/abbreviations/timezones/sa/art.html|title = Argentina Time – ART Time Zone}}{{cite web|access-date=2008-01-26|title=Time zone names- Argentina Time|url=http://www.worldtimezone.com/wtz-names/wtz-art.html}} {{langx|es|hora oficial argentina, HOA}}).
In 2007 and 2008, biannual switching between UTC–3:00 (winter DST) and UTC–2:00 (summer DST) resumed; in 2009, this was replaced again with year-round UTC–3:00 (permanent DST).{{cite journal |title=El Gobierno no adelantará la hora oficial el próximo domingo |journal=Actualidad |date=16 October 2009 |url=http://www.lanacion.com.ar/nota.asp?nota_id=1187055 |access-date=17 October 2023 |language=Spanish |archive-url=https://web.archive.org/web/20091018063808/http://www.lanacion.com.ar/nota.asp?nota_id=1187055 |archive-date=18 October 2009}}
IANA time zone database
In the file zone.tab of the IANA time zone database Argentina has the following zones:
- America/Argentina/Buenos_Aires – Buenos Aires (BA, CF)
- America/Argentina/Cordoba – most locations (CD, CC, CR, ER, FO, MN, SF)
- America/Argentina/Salta (SA, LP, NQ, RN)
- America/Argentina/Jujuy – Jujuy (JY)
- America/Argentina/Tucuman – Tucuman (TM)
- America/Argentina/Catamarca – Catamarca (CT), Chubut (CH)
- America/Argentina/La Rioja – La Rioja (LR)
- America/Argentina/San Juan – San Juan (SJ)
- America/Argentina/Mendoza – Mendoza (MZ)
- America/Argentina/San Luis – San Luis (SL)
- America/Argentina/Rio Gallegos – Santa Cruz (SC)
- America/Argentina/Ushuaia – Tierra del Fuego (TF)
- America/Argentina/Santiago_del_Estero (SE)
Full History
| class="wikitable"
|+ Full History of Timezone Changes since 1920{{ref|a}} ! From 12:00 AM of the day !! Adopted Time Zone !! Until 11:59 of the day | ||
| 01-05-1920 | -4 | 30-11-1930 |
| 01-12-1930 | -3 | 31-03-1931 |
| 01-04-1931 | -4 | 14-10-1931 |
| 15-10-1931 | -3 | 29-02-1932 |
| 01-03-1932 | -4 | 31-10-1932 |
| 01-11-1932 | -3 | 29-02-1933 |
| 01-03-1933 | -4 | 31-10-1933 |
| 01-11-1933 | -3 | 28-02-1934 |
| 01-03-1934 | -4 | 31-10-1934 |
| 01-11-1934 | -3 | 28-02-1935 |
| 01-03-1935 | -4 | 31-10-1935 |
| 01-11-1935 | -3 | 29-02-1936 |
| 01-03-1936 | -4 | 31-10-1936 |
| 01-11-1936 | -3 | 28-02-1937 |
| 01-03-1937 | -4 | 31-10-1937 |
| 01-11-1937 | -3 | 28-02-1938 |
| 01-03-1938 | -4 | 31-10-1938 |
| 01-11-1938 | -3 | 28-02-1939 |
| 01-03-1939 | -4 | 31-10-1939 |
| 01-11-1939 | -3 | 29-02-1940 |
| 01-03-1940 | -4 | 30-06-1940 |
| 01-07-1940 | -3 | 14-06-1941 |
| 15-06-1941 | -4 | 14-10-1941 |
| 15-10-1941 | -3 | 31-07-1943 |
| 01-08-1943 | -4 | 14-10-1943 |
| 15-10-1943 | -3 | 28-02-1946 |
| 01-03-1946 | -4 | 30-09-1946 |
| 01-10-1946 | -3 | 30-09-1963 |
| 01-10-1963 | -4 | 14-12-1963 |
| 15-12-1963 | -3 | 29-02-1964 |
| 01-03-1964 | -4 | 14-10-1964 |
| 15-10-1964 | -3 | 28-02-1965 |
| 01-03-1965 | -4 | 14-10-1965 |
| 15-10-1965 | -3 | 28-02-1966 |
| 01-03-1966 | -4 | 14-10-1966 |
| 15-10-1966 | -3 | 01-04-1967 |
| 02-04-1967 | -4 | 30-09-1967 |
| 01-10-1967 | -3 | 06-04-1968 |
| 07-04-1968 | -4 | 05-10-1968 |
| 06-10-1968 | -3 | 05-04-1969 |
| 06-04-1969 | -4 | 04-10-1969 |
| 05-10-1969 | -3 | 22-01-1974 |
| 23-01-1974 | -2 | 30-04-1974 |
| 01-05-1974 | -3 | 30-11-1988 |
| 01-12-1988 | -2 | 04-03-1989 |
| 05-03-1989 | -3 | 14-10-1989 |
| 15-10-1989 | -2 | 03-03-1990 |
| 04-03-1990 | -3 | 20-10-1990 |
| 21-10-1990 | -2 | 02-03-1991 |
| 03-03-1991 | -3 | 19-10-1991 |
| 20-10-1991 | -2 | 29-02-1992 |
| 01-03-1992 | -3 | 17-10-1992 |
| 18-10-1992 | -2 | 06-03-1993 |
| 07-03-1993 | -3 | 29-12-2007 |
| 30-12-2007 | -2 | 15-03-2008 |
| 16-03-2008 | -3 | 18-10-2008 |
| 19-10-2008 | -2 | 14-03-2009{{ref|b}} |
| 15-03-2009 | -3 | -present |
Notes
References
{{Reflist}}
- [https://web.archive.org/web/20120623013511/http://www.twinsun.com/tz/tz-link.htm tz database] – The tz database contains an extensive history of time zone and daylight saving time changes, with references to official sources for changes to time zones, for Argentina and the rest of the world.
External links
- {{in lang|es}} [https://www.hidro.gov.ar/observatorio/LaHora.asp?op=3 Husos Horarios Adoptados en la República Argentina] - Servicio de Hidrografía Naval, Ministerio de Defensa
{{Americas topic|Time in}}
{{coord missing|Argentina}}
Category:Geography of Argentina
Category:Time in South America
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