2007
modified
Argentina resumed recent DST observance for the 2007-2009 period, with provincial opt-outs.
DST timeline
Daylight saving time in Argentina has 2 recorded changes on record, spanning 2007–2009. The earliest documented event is the modification in 2007: Argentina resumed recent DST observance for the 2007-2009 period, with provincial opt-outs. The most recent is the abolition in 2009: Argentina stopped observing DST and has remained on UTC-03:00 nationally. Across this history, Argentina recorded 0 adoptions and 1 abolition of the clock change, reflecting how often the policy was revisited. As of the latest data, Argentina is shown as "Abolished" in our daylight saving tracker, which is the practical takeaway for anyone scheduling calls, travel, or deliveries against this region today.
Argentina resumed recent DST observance for the 2007-2009 period, with provincial opt-outs.
Each entry records a distinct daylight saving milestone for Argentina. An adoption marks the year clocks first began shifting; an abolition marks the year the country stopped changing them and settled on a single year-round offset; a modification covers changes to the start or end dates, the size of the shift, or which regions take part; and a reform vote records a legislative or parliamentary decision that may not yet be in force. Years reflect when the change took effect, not when it was announced, so a 2019 vote and a later effective date can both appear.
Daylight saving rules change more often than most people expect, and historical offsets are exactly the detail that breaks date math for past timestamps, travel records, and historical scheduling. If you only need today’s behaviour for Argentina, the current-status link above is the fastest answer; if you are reconstructing a past date or comparing several countries, the full timeline and the linked sources below give you the authoritative record.