Reykjavik to Porto Alegre: time difference
Porto Alegre is 3 h behind Reykjavik. Live clocks for both, the working hours they share, and how each one sits against your own time.
−3 h
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Reykjavik 12:04 12:04 PM Porto Alegre 09:04 9:04 AM You –:–
12:04 12:04 PM
Greenwich Mean Time · UTC+0
☀️ 08:03 · 🌙 18:28
09:04 9:04 AM
Brasilia Standard Time · UTC-3
☀️ 05:53 · 🌙 18:32
·
−3 h
Porto Alegre is 3 h behind Reykjavik.
When you, Reykjavik and Porto Alegre 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
🇧🇷 Porto Alegre
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 | 🇧🇷 Porto Alegre |
|---|---|---|
| Local time | 12:04 | 09:04 |
| Local date | Saturday, October 10, 2026 | Saturday, October 10, 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 | 08:03 | 05:53 |
| Sunset | 18:28 | 18:32 |
| Daylight | 10 h 25 min | 12 h 39 min |
| People on this clock | 136,894 | 1,332,833 |
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 Porto Alegre: common questions
How many hours behind Reykjavik is Porto Alegre?
The clocks in Porto Alegre 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 Porto Alegre?
At 9:00 AM in Reykjavik, clocks in Porto Alegre show 6:00 AM.
What time is it in Porto Alegre at the end of the working day in Reykjavik?
The working day in Reykjavik ends at 6:00 PM; in Porto Alegre it is 3:00 PM at that moment.
When do working hours in Reykjavik and in Porto Alegre 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 Porto Alegre.
When is it still the previous day in Porto Alegre?
Until 3:00 AM in Reykjavik it is still the previous day in Porto Alegre. The other way round, from 9:00 PM in Porto Alegre it is already the next day in Reykjavik.
Does the time difference between Reykjavik and Porto Alegre change?
No. Neither place uses daylight saving time, so the difference stays 3 hours all year.
