Reykjavik to Petropolis: time difference
Petropolis 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 21:49 9:49 PM Petropolis 18:49 6:49 PM You –:–
21:49 9:49 PM
Greenwich Mean Time · UTC+0
☀️ 08:33 · 🌙 17:53
18:49 6:49 PM
Brasilia Standard Time · UTC-3
☀️ 05:17 · 🌙 17:59
·
−3 h
Petropolis is 3 h behind Reykjavik.
When you, Reykjavik and Petropolis 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
🇧🇷 Petropolis
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 | 🇧🇷 Petropolis |
|---|---|---|
| Local time | 21:49 | 18:49 |
| Local date | Tuesday, October 20, 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 | 05:17 |
| Sunset | 17:53 | 17:59 |
| Daylight | 9 h 20 min | 12 h 42 min |
| People on this clock | 136,894 | 278,881 |
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 Petropolis: common questions
How far behind Reykjavik is Petropolis?
Petropolis is 3 hours behind Reykjavik: UTC−3 against UTC+0.
What time is it in Petropolis at the start of the working day in Reykjavik?
The working day in Reykjavik starts at 9:00 AM; in Petropolis it is 6:00 AM at that moment.
What time is it in Petropolis at the end of the working day in Reykjavik?
The working day in Reykjavik ends at 6:00 PM; in Petropolis it is 3:00 PM at that moment.
When is a good time to call Petropolis from Reykjavik?
Between 12:00 PM and 6:00 PM in Reykjavik – that is 9:00 AM to 3:00 PM in Petropolis – both places are within working hours (9:00 AM–6:00 PM).
When does the date change in Petropolis compared with Reykjavik?
The new day starts in Petropolis later: until 3:00 AM in Reykjavik, it is still the previous day there. From 9:00 PM in Petropolis, Reykjavik is already on the next day.
Is the time difference between Reykjavik and Petropolis the same all year?
Yes. Neither Reykjavik nor Petropolis switches to summer time, so the gap is always 3 hours.
