Buenos Aires

Argentina • Argentina Time

Time Zone

Buenos Aires uses Argentina Time (ART), currently running at UTC−3 (year-round). Argentina abolished daylight saving time in 1999 (after brief experimentations). ART (UTC−3) is fixed throughout the year.

Business & Commerce

Buenos Aires, Argentina's capital, operates on Argentina Time (ART, UTC−3) year-round with no daylight saving time — Argentina settled on the fixed UTC−3 offset in 1999 after several interruptions and revivals of DST over the decades. At UTC−3, Buenos Aires is three hours behind London (GMT) and two hours ahead of New York (EST) in winter; during U.S. summer (EDT), the gap narrows to one hour. Buenos Aires is South America's second-largest financial center after São Paulo, hosting the Bolsa de Comercio de Buenos Aires, one of the region's older exchanges. Argentina's prominence in global sovereign bond and emerging market debt markets — the country has one of the most frequently restructured debt histories of any major economy — makes ART a familiar timezone reference for emerging market debt traders worldwide. ART aligns exactly with São Paulo's BRT, creating a consistent business clock across South America's two largest cities.