Technical Specifications & Standards
Official chronometric properties, ISO standards, and international database registry identifiers for Argentina Time:
Daylight Saving Time (DST) Transitions
⬆️ Spring Forward (Clocks Advance)
None (Argentina abolished seasonal clock changes in 2009)
⬇️ Fall Back (Clocks Return)
None
Observing Jurisdictions & Subdivisions
1 Sovereign NationsSovereign nations, administrative subdivisions, and regional territories officially operating under ART:
Regional Subdivisions & Territory Details
Financial Markets & Trading Hours
Shares trading hours directly with São Paulo (B3) and overlaps during the afternoon session with European trading desks.
Local Hours: 11:00 - 17:00 ART
UTC Window: 12:00 - 20:00 UTC
Local Hours: 11:00 - 17:00 ART
UTC Window: 12:00 - 20:00 UTC
Major Cities in ART
Primary metropolitan centers and financial hubs observing this time zone:
Adoption History & Astronomical Facts
Year Established: 1920
First standardized in 1894 based on the meridian of the National Astronomical Observatory in Córdoba. In 1969, the government shifted the national time to UTC-3 to align commercial and banking ties with neighboring Brazil, even though the country geographically sits in the UTC-4 and UTC-5 zones.
Because Argentina sits west of its official UTC-3 time zone meridian, summer sunsets in western wine-producing valleys like Mendoza occur past 9:30 PM, making it common for restaurants in Buenos Aires to fill up only after 10:00 PM.
Frequently Asked Questions about ART
What does ART stand for?
ART stands for Argentina Time, three hours behind Coordinated Universal Time (UTC-3).
Does Argentina use daylight saving time?
No. Argentina abandoned seasonal clock adjustments in 2009; Buenos Aires remains on UTC-3 year-round.
What is the time difference between Buenos Aires and New York?
Buenos Aires is two hours ahead of New York during North American winter (EST), and one hour ahead during North American summer (EDT).