Grenville to Rio de Janeiro: time difference
Rio de Janeiro is 1 h ahead of Grenville. 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.
Grenville 08:31 8:31 AM Rio de Janeiro 09:31 9:31 AM You –:–
08:31 8:31 AM
Atlantic Standard Time · UTC-4
☀️ 05:56 · 🌙 17:52
09:31 9:31 AM
Brasilia Standard Time · UTC-3
☀️ 05:26 · 🌙 17:55
·
+1 h
Rio de Janeiro is 1 h ahead of Grenville.
When you, Grenville and Rio de Janeiro are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇬🇩 Grenville
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 de Janeiro
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 | 🇬🇩 Grenville | 🇧🇷 Rio de Janeiro |
|---|---|---|
| Local time | 08:31 | 09:31 |
| Local date | Saturday, October 10, 2026 | Saturday, October 10, 2026 |
| Time zone | Atlantic Standard Time | Brasilia Standard Time |
| UTC offset | UTC-4 | UTC-3 |
| Offset from Grenville | — | +1 h |
| IANA zone | America/Grenada | America/Sao Paulo |
| Daylight saving | Not observed | Not observed |
| Sunrise | 05:56 | 05:26 |
| Sunset | 17:52 | 17:55 |
| Daylight | 11 h 55 min | 12 h 30 min |
| People on this clock | 2,476 | 6,211,223 |
Compare Grenville with another city
More comparisons with Grenville: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Grenville and Rio de Janeiro: common questions
How many hours ahead of Grenville is Rio de Janeiro?
The clocks in Rio de Janeiro are 1 hour ahead of those in Grenville (UTC−3 and UTC−4).
What time is it in Rio de Janeiro when it is 9:00 AM in Grenville?
When it is 9:00 AM in Grenville, it is 10:00 AM in Rio de Janeiro.
What time is it in Rio de Janeiro at the end of the working day in Grenville?
The working day in Grenville ends at 6:00 PM; in Rio de Janeiro it is 7:00 PM at that moment.
Is there a time when both Grenville and Rio de Janeiro are at work?
Yes: from 9:00 AM to 5:00 PM in Grenville (10:00 AM to 6:00 PM in Rio de Janeiro), the working days (9:00 AM–6:00 PM) overlap.
From what time in Grenville is it tomorrow in Rio de Janeiro?
Once it is 11:00 PM in Grenville, the date in Rio de Janeiro has already changed. Until 1:00 AM in Rio de Janeiro, it is still the previous day in Grenville.
Is the time difference between Grenville and Rio de Janeiro the same all year?
Yes. Neither Grenville nor Rio de Janeiro switches to summer time, so the gap is always 1 hour.
