Americas · South America · Sovereign state
Current time in Argentina
A single time zone at UTC-03:00.
Friday, June 5, 2026
About Argentina's time
A single time zone.
Argentina operates on a single timezone of UTC-3 across its entire mainland, which keeps things simple for a country that stretches over 3,700 km from north to south—dawn and sunset times can feel quite different depending on where you are.
Major cities
Cities of Argentina.
History
How Argentina keeps time.
Argentina first adopted standardized time on October 31, 1894, when Congress passed a law establishing GMT-4 as the national standard to improve railway scheduling and telegraph coordination. This was later adjusted to GMT-4:16:48 in one of the quirkiest moments in global timekeeping—a compromise between Buenos Aires' local solar time and a clean round offset.
During parts of the 20th century, Argentina experimented intermittently with daylight saving time, adopting it sporadically during energy crises or economic instability, but it was frequently dropped due to public opposition and inconsistent results across different provinces.
The most significant modern shift came in December 2007, when the government moved from UTC-4 to UTC-3 year-round as a permanent measure, effectively ending the debate over DST in practice. Argentina hasn't returned to DST since.
Over the years, Argentina has used three main offsets: UTC-4:16:48 (1894–1920), UTC-4 (1920–2007), and UTC-3 (2007–present). The 12 timezone entries in the IANA database reflect historical and provincial variations, though today the entire country observes UTC-3 uniformly.
Did you know?
Things about Argentina's time.
Despite its immense north-to-south span—over 3,700 km—Argentina uses just one timezone. Solar noon in Jujuy in the north can be nearly 30 minutes earlier than in Tierra del Fuego far to the south, but clocks tell the same time everywhere.
Argentina's switch from UTC-4 to UTC-3 at the end of 2007 was controversial. The move was intended to save energy and align better with trade partners like Brazil, but critics argued it caused problems in western provinces where sunrise came very late in winter.
The IANA database lists 12 zone names for Argentina, but most of these reflect historical provincial differences rather than current practice. Today, all of continental Argentina uses UTC-3, with the multiple entries preserved mainly for historical accuracy.
Frequently asked questions
Common questions about Argentina's time zone, daylight saving rules, and how to handle it in software. Can't find what you need? Email [email protected].
- Does Argentina observe daylight saving time?
- No. Argentina currently does not observe daylight saving time and hasn't since the late 2000s. The entire country stays on UTC-3 year-round.
- Is the whole country on the same time?
- Yes. All of continental Argentina uses UTC-3, even though the country's north-south span means natural solar time varies by about 30 minutes across the country.
- Why does Argentina use UTC-3 instead of UTC-4?
- Argentina moved from UTC-4 to UTC-3 at the end of 2007. The change was made partly to save energy and partly to align more closely with major trading partners like Brazil and Chile, most of which are at or near UTC-3.
- What time is sunrise and sunset in Argentina?
- Sunrise and sunset times vary significantly by latitude. In Buenos Aires, sunrise ranges from about 5:55 AM in summer to 8:00 AM in winter. In northern Jujuy, the sun rises 20–30 minutes earlier on average.
- What's the time difference between Argentina and New York?
- Argentina is typically 2 hours ahead of New York (when New York is on EST) and 1 hour ahead when New York is on EDT. Argentina doesn't observe DST, so the difference shifts depending on whether the U.S. does.
- Are there 12 different timezones in Argentina?
- Not currently. The IANA database lists 12 zone names for Argentina reflecting historical provincial variations, but today the entire country uses a single offset of UTC-3.
- Is it confusing to travel across Argentina with only one timezone?
- Clocks don't change when you travel across Argentina, which is administratively simple. However, if you travel north to south, you'll notice the sun rises and sets at very different clock times depending on your location.
- What's the time in Buenos Aires right now?
- Buenos Aires is always UTC-3. You can subtract 3 hours from UTC/GMT to find the current time there.
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