Time in Buenos Aires, Argentina
Monday, September 21, 2026
Buenos Aires does not change its clocks
A fixed offset, all year round
Buenos Aires stays on Argentina Standard Time at UTC-03:00 every day of the year. There is no spring-forward or fall-back here, which puts it with the majority: most of the world's time zones do not observe daylight saving.
That sounds like it makes scheduling simpler, and locally it does — but it introduces a different trap for anyone working with Buenos Aires from a country that does change clocks. The offset between you and Buenos Aires is not constant: it changes when your clocks move, even though nothing changed here. A recurring call that has run at the same local time for months will shift by an hour, from your side, without anyone editing the invite.
When the gap to Buenos Aires changes
Dates in the next year where the difference shifts, by counterpart city
The difference between two cities is not a constant. It changes whenever either side moves its clocks — and because regions switch on different dates, there are short windows each year when the usual gap is wrong. These are the dates that matter for Buenos Aires:
New York (United States)
- From 1 November 2026: Buenos Aires is 2 hours ahead of New York
- From 14 March 2027: Buenos Aires is 1 hour ahead of New York
Madrid (Spain)
- From 25 October 2026: Buenos Aires is 4 hours behind Madrid
- From 28 March 2027: Buenos Aires is 5 hours behind Madrid
Lisbon (Portugal)
- From 25 October 2026: Buenos Aires is 3 hours behind Lisbon
- From 28 March 2027: Buenos Aires is 4 hours behind Lisbon
Daylight and the sun over Buenos Aires
Buenos Aires sits at -34.60°, -58.38°
Longest day
14h 29m of daylight
Shortest day
9h 50m of daylight
Yearly swing
4h 39m between them
Clock time versus solar time
When the clock in Buenos Aires reads 12:00, the sun is not yet overhead — the civil clock runs 54 minutes ahead of mean solar time here. That is a substantial gap, and it is the reason daily rhythms in Buenos Aires can feel shifted relative to the clock: sunrise, lunch and sunset all arrive later in clock terms than the number suggests.
Quick Time Comparisons
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Time Zone Offset from Buenos Aires
Best Times to Contact Buenos Aires
Optimal calling and meeting hours
Business Hours
Typically 9:00 AM - 5:00 PM local time
Best for professional calls, meetings, and business inquiries
Personal Calls
Evenings 7:00 PM - 10:00 PM local time
Ideal for catching up with family and friends
Pro Tip: Use the meeting coordinator tool above to find overlapping working hours between your location and Buenos Aires. This makes scheduling international meetings much easier!
Cultural Business Context
Buenos Aires, Argentina • 06:25 local time
Consider Timing
Outside business hours
Quick Stats
Business Hours Timeline
Best Times to Contact
Times to Avoid
Business hours: 09:00 - 18:00 | Weekend: Sunday, Saturday | Lunch: 13:00 - 14:30
🌍 Cultural awareness enhances business relationships and prevents scheduling conflicts across global teams
Places related to Buenos Aires
Cities that share a clock, a country, or an offset
On exactly the same clock as Buenos Aires
These share the America/Argentina/Buenos_Aires zone, so they keep the same time as Buenos Aires year-round.
Elsewhere in Argentina
Argentina spans more than one time zone, so these cities are not on Buenos Aires's clock — a common source of scheduling errors when people pick a country rather than a city.
Same offset (UTC-03:00), different part of the world
These sit in other countries but keep the same standard offset as Buenos Aires (Argentina Standard Time). They will not necessarily change clocks on the same dates, so the match can be seasonal rather than permanent.
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Common Questions About Buenos Aires Time
Frequently asked questions
What time zone is Buenos Aires in?
Buenos Aires operates in the America/Argentina/Buenos_Aires time zone, known as Argentina Standard Time, currently UTC-03:00. This clock applies that offset directly from the IANA time zone database.
Does Buenos Aires observe daylight saving time?
No. Buenos Aires stays on Argentina Standard Time at UTC-03:00 all year and does not observe daylight saving time. Note that the difference between you and Buenos Aires can still change when your own clocks shift.
What's the time difference between Buenos Aires and my location?
The time comparison tool above shows the current time difference. You can also use our meeting coordinator to find the best times for calls across different time zones.
How accurate is this Buenos Aires clock?
Our clock synchronizes with your device's time and applies the official America/Argentina/Buenos_Aires time zone offset. It updates every second and automatically handles daylight saving time, ensuring accuracy within a second.
Can I use this for scheduling meetings in Buenos Aires?
Yes! This tool is perfect for scheduling. Use the meeting coordinator above to compare multiple time zones and find optimal meeting times that work for everyone in Buenos Aires and other locations.
Time Zone Facts About Buenos Aires
Interesting information about Buenos Aires's time
IANA identifier
America/Argentina/Buenos_Aires
Standard time name
Argentina Standard Time
Standard offset
UTC-03:00
Daylight saving
Not observed — the offset is fixed year-round
Region
South America
Population
3,075,646