Time in Argentina.html



Argentina is located at at a longitude that would naturally put in the UTC-4 UT time zone, but it actually uses the UTC-3 time zone. Argentina has observed daylight saving time in the past, including austral summer 1989-1990 through austral summer 1992-1993, and again in austral summer 1999-2000. After a period of not observing daylight saving time, Argentina once again observed daylight saving time again in 2007-2008 ¹ and 2008-2009.

Several Argentinian provinces do not observe daylight saving time. In austral summer 2008-2009, those provinces are Salta, La Pampa, Neuquen, Rio Negro, La Rioja, San Juan, Jujuy, Catamarca, Chubut, Mendoza, San Luis, Santa Cruz, and Tierra del Fuego.

The first official standardization took place on 1894-08-01, when a decree regulated the time for national railroads.

The official time switched between UTC-4 and UTC-3 from 1920 to 1969, and then between UTC-3 and UTC-2 from 1974 to 1993. On 1993-03-07 it was fixed at UTC-3.

In the tz-database Argentina has the following zones:

1. America/Argentina/Buenos_Aires - Buenos Aires (BA, CF)
2. America/Argentina/Cordoba - most locations (CB, CC, CN, ER, FM, MN, SE, 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)

References

External links

• (Spanish) Observatorio Naval Buenos Aires: National time

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