Time in Argentina

Argentina Daylight saving time Time in Brazil
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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 observe daylight saving time on a year-by-year basis, and individual provinces may opt out of the federal decision. At present, Argentina does not observe daylight saving time.[1]

The Argentine Hydrographic Service[2] maintains the official national time.


The first official standardization took place on 31 October 1894.[3] The official time switched between UTC−04:00 and UTC−03:00 from 1920 to 1969,[4] and then between UTC−03:00 and UTC−02:00 from 1974 to 1993.[5] Historically, some or all of Argentina has observed daylight saving time in summer 1989–1990 to summer 1992–1993 and again in 2007−2009.[6]On 7 March 1993, it was fixed at UTC−03:00, called Argentina Time (ART)[7][8]

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)


  1. ^ "El Gobierno no adelantará la hora oficial el próximo domingo". Retrieved 2009-10-29.
  2. ^ Hora Oficial Archived 2013-03-30 at the Wayback Machine
  3. ^ "HORA DE VERANO PARA LA REPUBLICA ARGENTINA". Archived from the original on 2003-08-03. Retrieved 2009-10-05.
  4. ^ [1]
  5. ^ [2]
  6. ^ Planet Ark : Argentine Congress OKs Time Change to Save Energy
  7. ^ http://www.timeanddate.com/library/abbreviations/timezones/sa/art.html
  8. ^ "Time zone names- Argentina Time". Retrieved 2008-01-26.