Istanbul to Porto Alegre: time difference
Porto Alegre is 3 h behind Istanbul. Live clocks for both, the working hours they share, and how each one sits against your own time.
🇸🇹 Porto Alegre, Sao Tome and Principe
48
- Greenwich Mean Time
- UTC+0
- Daytime
☀️ 05:18 · 🌙 17:25 · 12 h 7 min
−3 h
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Istanbul 11:52 11:52 AM Porto Alegre 08:52 8:52 AM You –:–
11:52 11:52 AM
GMT+03:00 · UTC+3
☀️ 07:10 · 🌙 18:33
08:52 8:52 AM
Greenwich Mean Time · UTC+0
☀️ 05:18 · 🌙 17:25
·
−3 h
Porto Alegre is 3 h behind Istanbul.
When you, Istanbul 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
🇹🇷 Istanbul
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 | 🇹🇷 Istanbul | 🇸🇹 Porto Alegre |
|---|---|---|
| Local time | 11:52 | 08:52 |
| Local date | Saturday, October 10, 2026 | Saturday, October 10, 2026 |
| Time zone | GMT+03:00 | Greenwich Mean Time |
| UTC offset | UTC+3 | UTC+0 |
| Offset from Istanbul | — | −3 h |
| IANA zone | Europe/Istanbul | Africa/Sao Tome |
| Daylight saving | Not observed | Not observed |
| Sunrise | 07:10 | 05:18 |
| Sunset | 18:33 | 17:25 |
| Daylight | 11 h 23 min | 12 h 7 min |
| People on this clock | 15,701,602 | 795 |
Compare Istanbul with another city
More comparisons with Istanbul: the time zones next to it and the far side of the clock.
Big time differences
Istanbul and Porto Alegre: common questions
How many hours behind Istanbul is Porto Alegre?
The clocks in Porto Alegre are 3 hours behind those in Istanbul (UTC+0 and UTC+3).
If it is 9:00 AM in Istanbul, what time is it in Porto Alegre?
At 9:00 AM in Istanbul, clocks in Porto Alegre show 6:00 AM.
If it is 6:00 PM in Istanbul, what time is it in Porto Alegre?
At 6:00 PM in Istanbul, clocks in Porto Alegre show 3:00 PM.
When is a good time to call Porto Alegre from Istanbul?
Between 12:00 PM and 6:00 PM in Istanbul – that is 9:00 AM to 3:00 PM in Porto Alegre – both places are within working hours (9:00 AM–6:00 PM).
When is it still the previous day in Porto Alegre?
Until 3:00 AM in Istanbul 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 Istanbul.
Does the time gap between Istanbul and Porto Alegre change during the year?
No, the clocks change neither in Istanbul nor in Porto Alegre, so the gap is 3 hours all year round.
