Buenos Aires to Rio Grande: time difference
Rio Grande 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 13:02 1:02 PM Rio Grande 12:02 12:02 PM You –:–
13:02 1:02 PM
Argentina Standard Time · UTC-3
☀️ 06:10 · 🌙 19:10
12:02 12:02 PM
Atlantic Standard Time · UTC-4
☀️ 06:18 · 🌙 18:00
·
−1 h
Rio Grande is 1 h behind Buenos Aires.
When you, Buenos Aires and Rio Grande 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
🇵🇷 Rio Grande
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 | 🇵🇷 Rio Grande |
|---|---|---|
| Local time | 13:02 | 12:02 |
| Local date | Saturday, October 17, 2026 | Saturday, October 17, 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 | 06:10 | 06:18 |
| Sunset | 19:10 | 18:00 |
| Daylight | 13 h | 11 h 42 min |
| People on this clock | 2,891,082 | 13,467 |
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 Rio Grande: common questions
How many hours behind Buenos Aires is Rio Grande?
The clocks in Rio Grande are 1 hour behind those in Buenos Aires (UTC−4 and UTC−3).
What time is it in Rio Grande when it is 9:00 AM in Buenos Aires?
When it is 9:00 AM in Buenos Aires, it is 8:00 AM in Rio Grande.
What time is it in Rio Grande at the end of the working day in Buenos Aires?
The working day in Buenos Aires ends at 6:00 PM; in Rio Grande it is 5:00 PM at that moment.
Is there a time when both Buenos Aires and Rio Grande are at work?
Yes: from 10:00 AM to 6:00 PM in Buenos Aires (9:00 AM to 5:00 PM in Rio Grande), the working days (9:00 AM–6:00 PM) overlap.
When does the date change in Rio Grande compared with Buenos Aires?
The new day starts in Rio Grande later: until 1:00 AM in Buenos Aires, it is still the previous day there. From 11:00 PM in Rio Grande, Buenos Aires is already on the next day.
Does the time gap between Buenos Aires and Rio Grande change during the year?
No, the clocks change neither in Buenos Aires nor in Rio Grande, so the gap is 1 hour all year round.
