Reykjavik to Sao Joao da Boa Vista: time difference
Sao Joao da Boa Vista is 3 h behind Reykjavik. Live clocks for both, the working hours they share, and how each one sits against your own time.
🇧🇷 Sao Joao da Boa Vista, Brazil
40
- Brasilia Standard Time
- UTC-3
- Daytime
☀️ 05:37 · 🌙 18:11 · 12 h 34 min
−3 h
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Reykjavik 18:33 6:33 PM Sao Joao da Boa Vista 15:33 3:33 PM You –:–
18:33 6:33 PM
Greenwich Mean Time · UTC+0
☀️ 08:15 · 🌙 18:14
15:33 3:33 PM
Brasilia Standard Time · UTC-3
☀️ 05:37 · 🌙 18:11
·
−3 h
Sao Joao da Boa Vista is 3 h behind Reykjavik.
When you, Reykjavik and Sao Joao da Boa Vista 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
🇧🇷 Sao Joao da Boa Vista
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 | 🇧🇷 Sao Joao da Boa Vista |
|---|---|---|
| Local time | 18:33 | 15:33 |
| 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 | 05:37 |
| Sunset | 18:14 | 18:11 |
| Daylight | 9 h 59 min | 12 h 34 min |
| People on this clock | 136,894 | 92,547 |
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 Sao Joao da Boa Vista: common questions
How many hours behind Reykjavik is Sao Joao da Boa Vista?
The clocks in Sao Joao da Boa Vista are 3 hours behind those in Reykjavik (UTC−3 and UTC+0).
If it is 9:00 AM in Reykjavik, what time is it in Sao Joao da Boa Vista?
At 9:00 AM in Reykjavik, clocks in Sao Joao da Boa Vista show 6:00 AM.
If it is 6:00 PM in Reykjavik, what time is it in Sao Joao da Boa Vista?
At 6:00 PM in Reykjavik, clocks in Sao Joao da Boa Vista show 3:00 PM.
When is a good time to call Sao Joao da Boa Vista from Reykjavik?
Between 12:00 PM and 6:00 PM in Reykjavik – that is 9:00 AM to 3:00 PM in Sao Joao da Boa Vista – both places are within working hours (9:00 AM–6:00 PM).
When is it still the previous day in Sao Joao da Boa Vista?
Until 3:00 AM in Reykjavik it is still the previous day in Sao Joao da Boa Vista. The other way round, from 9:00 PM in Sao Joao da Boa Vista it is already the next day in Reykjavik.
Does the time gap between Reykjavik and Sao Joao da Boa Vista change during the year?
No, the clocks change neither in Reykjavik nor in Sao Joao da Boa Vista, so the gap is 3 hours all year round.
