Niteroi to Reykjavik: time difference
Reykjavik is 3 h ahead of Niteroi. 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.
Niteroi 08:28 8:28 AM Reykjavik 11:28 11:28 AM You –:–
08:28 8:28 AM
Brasilia Standard Time · UTC-3
☀️ 05:25 · 🌙 17:55
11:28 11:28 AM
Greenwich Mean Time · UTC+0
☀️ 08:03 · 🌙 18:28
·
+3 h
Reykjavik is 3 h ahead of Niteroi.
When you, Niteroi and Reykjavik are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇧🇷 Niteroi
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
🇮🇸 Reykjavik
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 0 12 AM 1 1 AM 2 2 AM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇧🇷 Niteroi | 🇮🇸 Reykjavik |
|---|---|---|
| Local time | 08:28 | 11:28 |
| Local date | Saturday, October 10, 2026 | Saturday, October 10, 2026 |
| Time zone | Brasilia Standard Time | Greenwich Mean Time |
| UTC offset | UTC-3 | UTC+0 |
| Offset from Niteroi | — | +3 h |
| IANA zone | America/Sao Paulo | Atlantic/Reykjavik |
| Daylight saving | Not observed | Not observed |
| Sunrise | 05:25 | 08:03 |
| Sunset | 17:55 | 18:28 |
| Daylight | 12 h 30 min | 10 h 25 min |
| People on this clock | 481,749 | 136,894 |
Compare Niteroi with another city
More comparisons with Niteroi: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Niteroi and Reykjavik: common questions
How far ahead of Niteroi is Reykjavik?
Reykjavik is 3 hours ahead of Niteroi: UTC+0 against UTC−3.
What time is it in Reykjavik when it is 9:00 AM in Niteroi?
When it is 9:00 AM in Niteroi, it is 12:00 PM in Reykjavik.
What time is it in Reykjavik at the end of the working day in Niteroi?
The working day in Niteroi ends at 6:00 PM; in Reykjavik it is 9:00 PM at that moment.
Is there a time when both Niteroi and Reykjavik are at work?
Yes: from 9:00 AM to 3:00 PM in Niteroi (12:00 PM to 6:00 PM in Reykjavik), the working days (9:00 AM–6:00 PM) overlap.
When is it already the next day in Reykjavik?
From 9:00 PM in Niteroi it is already the next day in Reykjavik. The other way round, until 3:00 AM in Reykjavik it is still the previous day in Niteroi.
Does the time gap between Niteroi and Reykjavik change during the year?
No, the clocks change neither in Niteroi nor in Reykjavik, so the gap is 3 hours all year round.
