Buenos Aires to Acton, MA: time difference
Acton, MA is 1 h behind Buenos Aires. Live clocks for both, the working hours they share, and how each one sits against your own time.
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Buenos Aires 03:25 3:25 AM Acton, MA 02:25 2:25 AM You –:–
03:25 3:25 AM
Argentina Standard Time · UTC-3
☀️ 06:19 · 🌙 19:04
02:25 2:25 AM
Eastern Daylight Time · UTC-4
☀️ 06:53 · 🌙 18:13
·
−1 h
Acton, MA is 1 h behind Buenos Aires.
When you, Buenos Aires and Acton, MA are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇦🇷 Buenos Aires
0 12 AM 1 1 AM 2 2 AM 3 3 AM 4 4 AM 5 5 AM 6 6 AM 7 7 AM 8 8 AM 9 9 AM 10 10 AM 11 11 AM 12 12 PM 13 1 PM 14 2 PM 15 3 PM 16 4 PM 17 5 PM 18 6 PM 19 7 PM 20 8 PM 21 9 PM 22 10 PM 23 11 PM
🇺🇸 Acton, MA
23 11 PM 0 12 AM 1 1 AM 2 2 AM 3 3 AM 4 4 AM 5 5 AM 6 6 AM 7 7 AM 8 8 AM 9 9 AM 10 10 AM 11 11 AM 12 12 PM 13 1 PM 14 2 PM 15 3 PM 16 4 PM 17 5 PM 18 6 PM 19 7 PM 20 8 PM 21 9 PM 22 10 PM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇦🇷 Buenos Aires | 🇺🇸 Acton, MA |
|---|---|---|
| Local time | 03:25 | 02:25 |
| Local date | Saturday, October 10, 2026 | Saturday, October 10, 2026 |
| Time zone | Argentina Standard Time | Eastern Daylight Time |
| UTC offset | UTC-3 | UTC-4 |
| Offset from Buenos Aires | — | −1 h |
| IANA zone | America/Argentina/Buenos Aires | America/New York |
| Daylight saving | Not observed | On summer time → UTC-5, Nov 1, 01:00 |
| Sunrise | 06:19 | 06:53 |
| Sunset | 19:04 | 18:13 |
| Daylight | 12 h 45 min | 11 h 20 min |
| People on this clock | 2,891,082 | 7,596 |
Compare Buenos Aires with another city
More comparisons with Buenos Aires: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Buenos Aires and Acton, MA: common questions
What is the time difference between Buenos Aires and Acton, MA?
Acton is 1 hour behind: it uses UTC−4, while Buenos Aires is on UTC−3.
What time is it in Acton, MA, when it is 9:00 AM in Buenos Aires?
When it is 9:00 AM in Buenos Aires, it is 8:00 AM in Acton.
What time is it in Acton, MA, when it is 6:00 PM in Buenos Aires?
When it is 6:00 PM in Buenos Aires, it is 5:00 PM in Acton.
Is there a time when both Buenos Aires and Acton, MA, are at work?
Yes: from 10:00 AM to 6:00 PM in Buenos Aires (9:00 AM to 5:00 PM in Acton), the working days (9:00 AM–6:00 PM) overlap.
When does the date change in Acton, MA, compared with Buenos Aires?
The new day starts in Acton later: until 1:00 AM in Buenos Aires, it is still the previous day there. From 11:00 PM in Acton, Buenos Aires is already on the next day.
Does the time gap between Buenos Aires and Acton, MA, change during the year?
Yes – daylight saving time is used in Acton but not in Buenos Aires. From November 1, 2026, Acton will be 2 hours behind Buenos Aires.
