Castanhal to Reykjavik: time difference
Reykjavik is 3 h ahead of Castanhal. 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.
Castanhal 22:35 10:35 PM Reykjavik 01:35 1:35 AM You –:–
22:35 10:35 PM
Brasilia Standard Time · UTC-3
☀️ 05:56 · 🌙 18:04
01:35 1:35 AM
Greenwich Mean Time · UTC+0
☀️ 08:03 · 🌙 18:28
·
+3 h
Reykjavik is 3 h ahead of Castanhal.
When you, Castanhal 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
🇧🇷 Castanhal
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 | 🇧🇷 Castanhal | 🇮🇸 Reykjavik |
|---|---|---|
| Local time | 22:35 | 01:35 |
| Local date | Friday, October 9, 2026 | Saturday, October 10, 2026 |
| Time zone | Brasilia Standard Time | Greenwich Mean Time |
| UTC offset | UTC-3 | UTC+0 |
| Offset from Castanhal | — | +3 h |
| IANA zone | America/Belem | Atlantic/Reykjavik |
| Daylight saving | Not observed | Not observed |
| Sunrise | 05:56 | 08:03 |
| Sunset | 18:04 | 18:28 |
| Daylight | 12 h 8 min | 10 h 25 min |
| People on this clock | 192,256 | 136,894 |
Compare Castanhal with another city
More comparisons with Castanhal: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Castanhal and Reykjavik: common questions
How many hours ahead of Castanhal is Reykjavik?
The clocks in Reykjavik are 3 hours ahead of those in Castanhal (UTC+0 and UTC−3).
If it is 9:00 AM in Castanhal, what time is it in Reykjavik?
At 9:00 AM in Castanhal, clocks in Reykjavik show 12:00 PM.
What time is it in Reykjavik at the end of the working day in Castanhal?
The working day in Castanhal ends at 6:00 PM; in Reykjavik it is 9:00 PM at that moment.
When is a good time to call Reykjavik from Castanhal?
Between 9:00 AM and 3:00 PM in Castanhal – that is 12:00 PM to 6:00 PM in Reykjavik – both places are within working hours (9:00 AM–6:00 PM).
When is it already the next day in Reykjavik?
From 9:00 PM in Castanhal 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 Castanhal.
Does the time difference between Castanhal and Reykjavik change?
No. Neither place uses daylight saving time, so the difference stays 3 hours all year.
