Reykjavik to Rio Claro: time difference
Rio Claro is 3 h behind Reykjavik. 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.
Reykjavik 18:42 6:42 PM Rio Claro 15:42 3:42 PM You –:–
18:42 6:42 PM
Greenwich Mean Time · UTC+0
☀️ 08:27 · 🌙 18:00
15:42 3:42 PM
Brasilia Standard Time · UTC-3
☀️ 05:36 · 🌙 18:16
·
−3 h
Rio Claro is 3 h behind Reykjavik.
When you, Reykjavik and Rio Claro 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 Claro
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 Claro |
|---|---|---|
| Local time | 18:42 | 15:42 |
| Local date | Sunday, October 18, 2026 | Sunday, October 18, 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 | 08:27 | 05:36 |
| Sunset | 18:00 | 18:16 |
| Daylight | 9 h 33 min | 12 h 39 min |
| People on this clock | 136,894 | 201,418 |
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 Claro: common questions
What is the time difference between Reykjavik and Rio Claro?
Rio Claro is 3 hours behind: it uses UTC−3, while Reykjavik is on UTC+0.
What time is it in Rio Claro at the start of the working day in Reykjavik?
The working day in Reykjavik starts at 9:00 AM; in Rio Claro it is 6:00 AM at that moment.
What time is it in Rio Claro when it is 6:00 PM in Reykjavik?
When it is 6:00 PM in Reykjavik, it is 3:00 PM in Rio Claro.
When do working hours in Reykjavik and in Rio Claro overlap?
Working hours (9:00 AM–6:00 PM) overlap from 12:00 PM to 6:00 PM in Reykjavik, which is 9:00 AM to 3:00 PM in Rio Claro.
Until what time in Reykjavik is it still yesterday in Rio Claro?
Before 3:00 AM in Reykjavik, the date in Rio Claro has not changed yet. From 9:00 PM in Rio Claro, it is already the next day in Reykjavik.
Does the time difference between Reykjavik and Rio Claro change?
No. Neither place uses daylight saving time, so the difference stays 3 hours all year.
