Reykjavik to Rio das Ostras: time difference
Rio das Ostras is 3 h behind Reykjavik. Live clocks for both, the working hours they share, and how each one sits against your own time.
−3 h
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Reykjavik 07:52 7:52 AM Rio das Ostras 04:52 4:52 AM You –:–
07:52 7:52 AM
Greenwich Mean Time · UTC+0
☀️ 08:30 · 🌙 17:57
04:52 4:52 AM
Brasilia Standard Time · UTC-3
☀️ 05:13 · 🌙 17:54
·
−3 h
Rio das Ostras is 3 h behind Reykjavik.
When you, Reykjavik and Rio das Ostras are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇮🇸 Reykjavik
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 das Ostras
21 9 PM 22 10 PM 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
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇮🇸 Reykjavik | 🇧🇷 Rio das Ostras |
|---|---|---|
| Local time | 07:52 | 04:52 |
| Local date | Monday, October 19, 2026 | Monday, October 19, 2026 |
| Time zone | Greenwich Mean Time | Brasilia Standard Time |
| UTC offset | UTC+0 | UTC-3 |
| Offset from Reykjavik | — | −3 h |
| IANA zone | Atlantic/Reykjavik | America/Sao Paulo |
| Daylight saving | Not observed | Not observed |
| Sunrise | 08:30 | 05:13 |
| Sunset | 17:57 | 17:54 |
| Daylight | 9 h 27 min | 12 h 41 min |
| People on this clock | 136,894 | 156,491 |
Compare Reykjavik with another city
More comparisons with Reykjavik: the time zones next to it and the far side of the clock.
Big time differences
Reykjavik and Rio das Ostras: common questions
What is the time difference between Reykjavik and Rio das Ostras?
Rio das Ostras is 3 hours behind: it uses UTC−3, while Reykjavik is on UTC+0.
If it is 9:00 AM in Reykjavik, what time is it in Rio das Ostras?
At 9:00 AM in Reykjavik, clocks in Rio das Ostras show 6:00 AM.
What time is it in Rio das Ostras when it is 6:00 PM in Reykjavik?
When it is 6:00 PM in Reykjavik, it is 3:00 PM in Rio das Ostras.
Is there a time when both Reykjavik and Rio das Ostras are at work?
Yes: from 12:00 PM to 6:00 PM in Reykjavik (9:00 AM to 3:00 PM in Rio das Ostras), the working days (9:00 AM–6:00 PM) overlap.
When is it still the previous day in Rio das Ostras?
Until 3:00 AM in Reykjavik it is still the previous day in Rio das Ostras. The other way round, from 9:00 PM in Rio das Ostras it is already the next day in Reykjavik.
Does the time gap between Reykjavik and Rio das Ostras change during the year?
No, the clocks change neither in Reykjavik nor in Rio das Ostras, so the gap is 3 hours all year round.
