Reykjavik to Assis: time difference
Assis 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 00:48 12:48 AM Assis 21:48 9:48 PM You –:–
00:48 12:48 AM
Greenwich Mean Time · UTC+0
☀️ 08:33 · 🌙 17:53
21:48 9:48 PM
Brasilia Standard Time · UTC-3
☀️ 05:46 · 🌙 18:28
·
−3 h
Assis is 3 h behind Reykjavik.
When you, Reykjavik and Assis 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
🇧🇷 Assis
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 | 🇧🇷 Assis |
|---|---|---|
| Local time | 00:48 | 21:48 |
| Local date | Wednesday, October 21, 2026 | Tuesday, October 20, 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 | 08:33 | 05:46 |
| Sunset | 17:53 | 18:28 |
| Daylight | 9 h 20 min | 12 h 42 min |
| People on this clock | 136,894 | 101,409 |
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 Assis: common questions
What is the time difference between Reykjavik and Assis?
Assis is 3 hours behind: it uses UTC−3, while Reykjavik is on UTC+0.
If it is 9:00 AM in Reykjavik, what time is it in Assis?
At 9:00 AM in Reykjavik, clocks in Assis show 6:00 AM.
What time is it in Assis when it is 6:00 PM in Reykjavik?
When it is 6:00 PM in Reykjavik, it is 3:00 PM in Assis.
When do working hours in Reykjavik and in Assis 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 Assis.
Until what time in Reykjavik is it still yesterday in Assis?
Before 3:00 AM in Reykjavik, the date in Assis has not changed yet. From 9:00 PM in Assis, it is already the next day in Reykjavik.
Does the time difference between Reykjavik and Assis change?
No. Neither place uses daylight saving time, so the difference stays 3 hours all year.
