🇸🇹 Porto Alegre, Sao Tome and Principe
38
- Greenwich Mean Time
- UTC+0
- Daytime
☀️ 05:18 · 🌙 17:25 · 12 h 7 min
Porto Alegre to Istanbul: time difference
Istanbul is 3 h ahead of Porto Alegre. 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.
Porto Alegre 09:53 9:53 AM Istanbul 12:53 12:53 PM You –:–
09:53 9:53 AM
Greenwich Mean Time · UTC+0
☀️ 05:18 · 🌙 17:25
12:53 12:53 PM
GMT+03:00 · UTC+3
☀️ 07:10 · 🌙 18:33
·
+3 h
Istanbul is 3 h ahead of Porto Alegre.
When you, Porto Alegre and Istanbul are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇸🇹 Porto Alegre
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
🇹🇷 Istanbul
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 0 12 AM 1 1 AM 2 2 AM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇸🇹 Porto Alegre | 🇹🇷 Istanbul |
|---|---|---|
| Local time | 09:53 | 12:53 |
| Local date | Saturday, October 10, 2026 | Saturday, October 10, 2026 |
| Time zone | Greenwich Mean Time | GMT+03:00 |
| UTC offset | UTC+0 | UTC+3 |
| Offset from Porto Alegre | — | +3 h |
| IANA zone | Africa/Sao Tome | Europe/Istanbul |
| Daylight saving | Not observed | Not observed |
| Sunrise | 05:18 | 07:10 |
| Sunset | 17:25 | 18:33 |
| Daylight | 12 h 7 min | 11 h 23 min |
| People on this clock | 795 | 15,701,602 |
Compare Porto Alegre with another city
More comparisons with Porto Alegre: the time zones next to it and the far side of the clock.
Big time differences
Porto Alegre and Istanbul: common questions
What is the time difference between Porto Alegre and Istanbul?
Istanbul is 3 hours ahead: it uses UTC+3, while Porto Alegre is on UTC+0.
What time is it in Istanbul when it is 9:00 AM in Porto Alegre?
When it is 9:00 AM in Porto Alegre, it is 12:00 PM in Istanbul.
If it is 6:00 PM in Porto Alegre, what time is it in Istanbul?
At 6:00 PM in Porto Alegre, clocks in Istanbul show 9:00 PM.
When do working hours in Porto Alegre and in Istanbul overlap?
Working hours (9:00 AM–6:00 PM) overlap from 9:00 AM to 3:00 PM in Porto Alegre, which is 12:00 PM to 6:00 PM in Istanbul.
From what time in Porto Alegre is it tomorrow in Istanbul?
Once it is 9:00 PM in Porto Alegre, the date in Istanbul has already changed. Until 3:00 AM in Istanbul, it is still the previous day in Porto Alegre.
Does the time difference between Porto Alegre and Istanbul change?
No. Neither place uses daylight saving time, so the difference stays 3 hours all year.
