Istanbul to Sao Tome and Principe: time difference
Sao Tome and Principe is 3 h behind Istanbul. 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.
Istanbul 09:55 9:55 AM Sao Tome and Principe 06:55 6:55 AM You –:–
09:55 9:55 AM
GMT+03:00 · UTC+3
☀️ 07:10 · 🌙 18:33
06:55 6:55 AM
Greenwich Mean Time · UTC+0
☀️ 05:18 · 🌙 17:24
·
−3 h
Sao Tome and Principe is 3 h behind Istanbul.
When you, Istanbul and Sao Tome and Principe 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
🇸🇹 Sao Tome and Principe
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 | 🇸🇹 Sao Tome and Principe |
|---|---|---|
| Local time | 09:55 | 06:55 |
| 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 | 17:24 |
| Daylight | 11 h 23 min | 12 h 6 min |
| People on this clock | 15,701,602 | 204,327 |
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 Sao Tome and Principe: common questions
What is the time difference between Istanbul and Sao Tome and Principe?
Sao Tome and Principe is 3 hours behind: it uses UTC+0, while Istanbul is on UTC+3.
What time is it in Sao Tome and Principe when it is 9:00 AM in Istanbul?
When it is 9:00 AM in Istanbul, it is 6:00 AM in Sao Tome and Principe.
What time is it in Sao Tome and Principe when it is 6:00 PM in Istanbul?
When it is 6:00 PM in Istanbul, it is 3:00 PM in Sao Tome and Principe.
Is there a time when both Istanbul and Sao Tome and Principe are at work?
Yes: from 12:00 PM to 6:00 PM in Istanbul (9:00 AM to 3:00 PM in Sao Tome and Principe), the working days (9:00 AM–6:00 PM) overlap.
When does the date change in Sao Tome and Principe compared with Istanbul?
The new day starts in Sao Tome and Principe later: until 3:00 AM in Istanbul, it is still the previous day there. From 9:00 PM in Sao Tome and Principe, Istanbul is already on the next day.
Does the time gap between Istanbul and Sao Tome and Principe change during the year?
No, the clocks change neither in Istanbul nor in Sao Tome and Principe, so the gap is 3 hours all year round.
