Reykjavik to Tatuí: time difference
Tatuí 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 03:36 3:36 AM Tatuí 00:36 12:36 AM You –:–
03:36 3:36 AM
Greenwich Mean Time · UTC+0
☀️ 08:39 · 🌙 17:47
00:36 12:36 AM
Brasilia Standard Time · UTC-3
☀️ 05:33 · 🌙 18:20
·
−3 h
Tatuí is 3 h behind Reykjavik.
When you, Reykjavik and Tatuí 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
🇧🇷 Tatuí
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 | 🇧🇷 Tatuí |
|---|---|---|
| Local time | 03:36 | 00:36 |
| Local date | Thursday, October 22, 2026 | Thursday, October 22, 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 | 08:39 | 05:33 |
| Sunset | 17:47 | 18:20 |
| Daylight | 9 h 7 min | 12 h 46 min |
| People on this clock | 136,894 | 123,942 |
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 Tatuí: common questions
How many hours behind Reykjavik is Tatuí?
The clocks in Tatuí are 3 hours behind those in Reykjavik (UTC−3 and UTC+0).
What time is it in Tatuí at the start of the working day in Reykjavik?
The working day in Reykjavik starts at 9:00 AM; in Tatuí it is 6:00 AM at that moment.
What time is it in Tatuí at the end of the working day in Reykjavik?
The working day in Reykjavik ends at 6:00 PM; in Tatuí it is 3:00 PM at that moment.
When do working hours in Reykjavik and in Tatuí 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 Tatuí.
Until what time in Reykjavik is it still yesterday in Tatuí?
Before 3:00 AM in Reykjavik, the date in Tatuí has not changed yet. From 9:00 PM in Tatuí, it is already the next day in Reykjavik.
Is the time difference between Reykjavik and Tatuí the same all year?
Yes. Neither Reykjavik nor Tatuí switches to summer time, so the gap is always 3 hours.
