Reykjavik to Ubatuba: time difference
Ubatuba 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 03:39 3:39 AM Ubatuba 00:39 12:39 AM You –:–
03:39 3:39 AM
Greenwich Mean Time · UTC+0
☀️ 08:27 · 🌙 18:00
00:39 12:39 AM
Brasilia Standard Time · UTC-3
☀️ 05:26 · 🌙 18:07
·
−3 h
Ubatuba is 3 h behind Reykjavik.
When you, Reykjavik and Ubatuba 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
🇧🇷 Ubatuba
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 | 🇧🇷 Ubatuba |
|---|---|---|
| Local time | 03:39 | 00:39 |
| 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 | 05:26 |
| Sunset | 18:00 | 18:07 |
| Daylight | 9 h 33 min | 12 h 41 min |
| People on this clock | 136,894 | 92,981 |
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 Ubatuba: common questions
What is the time difference between Reykjavik and Ubatuba?
Ubatuba is 3 hours behind: it uses UTC−3, while Reykjavik is on UTC+0.
What time is it in Ubatuba at the start of the working day in Reykjavik?
The working day in Reykjavik starts at 9:00 AM; in Ubatuba it is 6:00 AM at that moment.
What time is it in Ubatuba at the end of the working day in Reykjavik?
The working day in Reykjavik ends at 6:00 PM; in Ubatuba it is 3:00 PM at that moment.
When is a good time to call Ubatuba from Reykjavik?
Between 12:00 PM and 6:00 PM in Reykjavik – that is 9:00 AM to 3:00 PM in Ubatuba – both places are within working hours (9:00 AM–6:00 PM).
When is it still the previous day in Ubatuba?
Until 3:00 AM in Reykjavik it is still the previous day in Ubatuba. The other way round, from 9:00 PM in Ubatuba it is already the next day in Reykjavik.
Does the time gap between Reykjavik and Ubatuba change during the year?
No, the clocks change neither in Reykjavik nor in Ubatuba, so the gap is 3 hours all year round.
