Buenos Aires to Las Marias: time difference
Las Marias 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 21:29 9:29 PM Las Marias 20:29 8:29 PM You –:–
21:29 9:29 PM
Argentina Standard Time · UTC-3
☀️ 05:50 · 🌙 19:26
20:29 8:29 PM
Atlantic Standard Time · UTC-4
☀️ 06:29 · 🌙 17:55
·
−1 h
Las Marias is 1 h behind Buenos Aires.
When you, Buenos Aires and Las Marias 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
🇵🇷 Las Marias
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 | 🇵🇷 Las Marias |
|---|---|---|
| Local time | 21:29 | 20:29 |
| Local date | Wednesday, November 4, 2026 | Wednesday, November 4, 2026 |
| Time zone | Argentina Standard Time | Atlantic Standard Time |
| UTC offset | UTC-3 | UTC-4 |
| Offset from Buenos Aires | — | −1 h |
| IANA zone | America/Argentina/Buenos Aires | America/Puerto Rico |
| Daylight saving | Not observed | Not observed |
| Sunrise | 05:50 | 06:29 |
| Sunset | 19:26 | 17:55 |
| Daylight | 13 h 36 min | 11 h 26 min |
| People on this clock | 2,891,082 | 9,700 |
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 Las Marias: common questions
What is the time difference between Buenos Aires and Las Marias?
Las Marias is 1 hour behind: it uses UTC−4, while Buenos Aires is on UTC−3.
If it is 9:00 AM in Buenos Aires, what time is it in Las Marias?
At 9:00 AM in Buenos Aires, clocks in Las Marias show 8:00 AM.
What time is it in Las Marias when it is 6:00 PM in Buenos Aires?
When it is 6:00 PM in Buenos Aires, it is 5:00 PM in Las Marias.
Is there a time when both Buenos Aires and Las Marias are at work?
Yes: from 10:00 AM to 6:00 PM in Buenos Aires (9:00 AM to 5:00 PM in Las Marias), the working days (9:00 AM–6:00 PM) overlap.
When is it still the previous day in Las Marias?
Until 1:00 AM in Buenos Aires it is still the previous day in Las Marias. The other way round, from 11:00 PM in Las Marias it is already the next day in Buenos Aires.
Does the time gap between Buenos Aires and Las Marias change during the year?
No, the clocks change neither in Buenos Aires nor in Las Marias, so the gap is 1 hour all year round.
