Time in Argentina

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Time zone map of South America Time zone map of South America (2014).png
Time zone map of South America

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.

Contents

The Argentine Hydrographic Service [1] 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. [2] 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. [3] 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. [4] In 1993, the national time was fixed at UTC−03:00, called Argentina Time (ART; [5] [6] Spanish : hora oficial argentina, HOA). In 2007 and 2008, biannual switching between UTC–3:00 (winter DST) and UTC–2:00 (summer DDST) resumed; in 2009, this was replaced again with year-round UTC–3:00 (permanent DST). [7]

IANA time zone database

In the file zone.tab of the IANA time zone database Argentina has the following zones:

  1. America/Argentina/Buenos_Aires – Buenos Aires (BA, CF)
  2. America/Argentina/Cordoba – most locations (CD, CC, CR, ER, FO, MN, SF)
  3. America/Argentina/Salta (SA, LP, NQ, RN)
  4. America/Argentina/Jujuy – Jujuy (JY)
  5. America/Argentina/Tucuman – Tucuman (TM)
  6. America/Argentina/Catamarca – Catamarca (CT), Chubut (CH)
  7. America/Argentina/La Rioja – La Rioja (LR)
  8. America/Argentina/San Juan – San Juan (SJ)
  9. America/Argentina/Mendoza – Mendoza (MZ)
  10. America/Argentina/San Luis – San Luis (SL)
  11. America/Argentina/Rio Gallegos – Santa Cruz (SC)
  12. America/Argentina/Ushuaia – Tierra del Fuego (TF)
  13. America/Argentina/Santiago_del_Estero (SE)

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References

  1. Hora Oficial Archived 2013-03-30 at the Wayback Machine
  2. "HORA DE VERANO PARA LA REPUBLICA ARGENTINA". Archived from the original on 2003-08-03. Retrieved 2009-10-05.
  3. Time Changes in Buenos Aires Over the Years, 1925–1949. TimeAndDate.com.
  4. Time Changes in Buenos Aires Over the Years, 1970–1979. TimeAndDate.com.
  5. "Argentina Time – ART Time Zone".
  6. "Time zone names- Argentina Time" . Retrieved 2008-01-26.
  7. "El Gobierno no adelantará la hora oficial el próximo domingo". Actualidad (in Spanish). 16 October 2009. Archived from the original on 18 October 2009. Retrieved 17 October 2023.