Puerto Rico to Buenos Aires: time difference
Buenos Aires is 1 h ahead of Puerto Rico. Live clocks for both, the working hours they share, and how each one sits against your own time.
+1 h
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Puerto Rico 20:58 8:58 PM Buenos Aires 21:58 9:58 PM You –:–
20:58 8:58 PM
Atlantic Standard Time · UTC-4
☀️ 06:17 · 🌙 18:08
21:58 9:58 PM
Argentina Standard Time · UTC-3
☀️ 06:20 · 🌙 19:03
·
+1 h
Buenos Aires is 1 h ahead of Puerto Rico.
When you, Puerto Rico and Buenos Aires are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇵🇷 Puerto Rico
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
🇦🇷 Buenos Aires
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 0 12 AM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇵🇷 Puerto Rico | 🇦🇷 Buenos Aires |
|---|---|---|
| Local time | 20:58 | 21:58 |
| Local date | Friday, October 9, 2026 | Friday, October 9, 2026 |
| Time zone | Atlantic Standard Time | Argentina Standard Time |
| UTC offset | UTC-4 | UTC-3 |
| Offset from Puerto Rico | — | +1 h |
| IANA zone | America/Puerto Rico | America/Argentina/Buenos Aires |
| Daylight saving | Not observed | Not observed |
| Sunrise | 06:17 | 06:20 |
| Sunset | 18:08 | 19:03 |
| Daylight | 11 h 50 min | 12 h 43 min |
| People on this clock | 3,285,874 | 2,891,082 |
Compare Puerto Rico with another city
More comparisons with Puerto Rico: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Puerto Rico and Buenos Aires: common questions
How many hours ahead of Puerto Rico is Buenos Aires?
The clocks in Buenos Aires are 1 hour ahead of those in Puerto Rico (UTC−3 and UTC−4).
What time is it in Buenos Aires at the start of the working day in Puerto Rico?
The working day in Puerto Rico starts at 9:00 AM; in Buenos Aires it is 10:00 AM at that moment.
What time is it in Buenos Aires at the end of the working day in Puerto Rico?
The working day in Puerto Rico ends at 6:00 PM; in Buenos Aires it is 7:00 PM at that moment.
Is there a time when both Puerto Rico and Buenos Aires are at work?
Yes: from 9:00 AM to 5:00 PM in Puerto Rico (10:00 AM to 6:00 PM in Buenos Aires), the working days (9:00 AM–6:00 PM) overlap.
When is it already the next day in Buenos Aires?
From 11:00 PM in Puerto Rico it is already the next day in Buenos Aires. The other way round, until 1:00 AM in Buenos Aires it is still the previous day in Puerto Rico.
Is the time difference between Puerto Rico and Buenos Aires the same all year?
Yes. Neither Puerto Rico nor Buenos Aires switches to summer time, so the gap is always 1 hour.
