Reykjavik to Atibaia: time difference
Atibaia 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 11:00 11:00 AM Atibaia 08:00 8:00 AM You –:–
11:00 11:00 AM
Greenwich Mean Time · UTC+0
☀️ 08:15 · 🌙 18:14
08:00 8:00 AM
Brasilia Standard Time · UTC-3
☀️ 05:35 · 🌙 18:11
·
−3 h
Atibaia is 3 h behind Reykjavik.
When you, Reykjavik and Atibaia 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
🇧🇷 Atibaia
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 | 🇧🇷 Atibaia |
|---|---|---|
| Local time | 11:00 | 08:00 |
| Local date | Wednesday, October 14, 2026 | Wednesday, October 14, 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 | 08:15 | 05:35 |
| Sunset | 18:14 | 18:11 |
| Daylight | 9 h 59 min | 12 h 35 min |
| People on this clock | 136,894 | 158,647 |
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 Atibaia: common questions
How many hours behind Reykjavik is Atibaia?
The clocks in Atibaia are 3 hours behind those in Reykjavik (UTC−3 and UTC+0).
What time is it in Atibaia at the start of the working day in Reykjavik?
The working day in Reykjavik starts at 9:00 AM; in Atibaia it is 6:00 AM at that moment.
What time is it in Atibaia at the end of the working day in Reykjavik?
The working day in Reykjavik ends at 6:00 PM; in Atibaia it is 3:00 PM at that moment.
Is there a time when both Reykjavik and Atibaia are at work?
Yes: from 12:00 PM to 6:00 PM in Reykjavik (9:00 AM to 3:00 PM in Atibaia), the working days (9:00 AM–6:00 PM) overlap.
Until what time in Reykjavik is it still yesterday in Atibaia?
Before 3:00 AM in Reykjavik, the date in Atibaia has not changed yet. From 9:00 PM in Atibaia, it is already the next day in Reykjavik.
Does the time gap between Reykjavik and Atibaia change during the year?
No, the clocks change neither in Reykjavik nor in Atibaia, so the gap is 3 hours all year round.
