Rio Grande to Buenos Aires: time difference
Buenos Aires is 1 h ahead of Rio Grande. 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.
Rio Grande 12:25 12:25 PM Buenos Aires 13:25 1:25 PM You –:–
12:25 12:25 PM
Atlantic Standard Time · UTC-4
☀️ 06:18 · 🌙 18:00
13:25 1:25 PM
Argentina Standard Time · UTC-3
☀️ 06:10 · 🌙 19:10
·
+1 h
Buenos Aires is 1 h ahead of Rio Grande.
When you, Rio Grande 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
🇵🇷 Rio Grande
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 | 🇵🇷 Rio Grande | 🇦🇷 Buenos Aires |
|---|---|---|
| Local time | 12:25 | 13:25 |
| Local date | Saturday, October 17, 2026 | Saturday, October 17, 2026 |
| Time zone | Atlantic Standard Time | Argentina Standard Time |
| UTC offset | UTC-4 | UTC-3 |
| Offset from Rio Grande | — | +1 h |
| IANA zone | America/Puerto Rico | America/Argentina/Buenos Aires |
| Daylight saving | Not observed | Not observed |
| Sunrise | 06:18 | 06:10 |
| Sunset | 18:00 | 19:10 |
| Daylight | 11 h 42 min | 13 h |
| People on this clock | 13,467 | 2,891,082 |
Compare Rio Grande with another city
More comparisons with Rio Grande: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Rio Grande and Buenos Aires: common questions
What is the time difference between Rio Grande and Buenos Aires?
Buenos Aires is 1 hour ahead: it uses UTC−3, while Rio Grande is on UTC−4.
What time is it in Buenos Aires at the start of the working day in Rio Grande?
The working day in Rio Grande starts at 9:00 AM; in Buenos Aires it is 10:00 AM at that moment.
If it is 6:00 PM in Rio Grande, what time is it in Buenos Aires?
At 6:00 PM in Rio Grande, clocks in Buenos Aires show 7:00 PM.
When is a good time to call Buenos Aires from Rio Grande?
Between 9:00 AM and 5:00 PM in Rio Grande – that is 10:00 AM to 6:00 PM in Buenos Aires – both places are within working hours (9:00 AM–6:00 PM).
When does the date change in Buenos Aires compared with Rio Grande?
The new day starts in Buenos Aires earlier: at 11:00 PM in Rio Grande it is already midnight there. Until 1:00 AM in Buenos Aires, Rio Grande is still on the previous day.
Does the time difference between Rio Grande and Buenos Aires change?
No. Neither place uses daylight saving time, so the difference stays 1 hour all year.
