Rennes to Istanbul: time difference
Istanbul is 1 h ahead of Rennes. 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.
Rennes 20:07 8:07 PM Istanbul 21:07 9:07 PM You –:–
20:07 8:07 PM
Central European Summer Time · UTC+2
☀️ 08:34 · 🌙 19:11
21:07 9:07 PM
GMT+03:00 · UTC+3
☀️ 07:21 · 🌙 18:18
·
+1 h
Istanbul is 1 h ahead of Rennes.
When you, Rennes 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
🇫🇷 Rennes
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
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 0 12 AM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇫🇷 Rennes | 🇹🇷 Istanbul |
|---|---|---|
| Local time | 20:07 | 21:07 |
| Local date | Tuesday, October 20, 2026 | Tuesday, October 20, 2026 |
| Time zone | Central European Summer Time | GMT+03:00 |
| UTC offset | UTC+2 | UTC+3 |
| Offset from Rennes | — | +1 h |
| IANA zone | Europe/Paris | Europe/Istanbul |
| Daylight saving | On summer time → UTC+1, Oct 25, 02:00 | Not observed |
| Sunrise | 08:34 | 07:21 |
| Sunset | 19:11 | 18:18 |
| Daylight | 10 h 37 min | 10 h 57 min |
| People on this clock | 225,081 | 15,701,602 |
Compare Rennes with another city
More comparisons with Rennes: the time zones next to it and the far side of the clock.
Big time differences
Rennes and Istanbul: common questions
How far ahead of Rennes is Istanbul?
Istanbul is 1 hour ahead of Rennes: UTC+3 against UTC+2.
What time is it in Istanbul when it is 9:00 AM in Rennes?
When it is 9:00 AM in Rennes, it is 10:00 AM in Istanbul.
If it is 6:00 PM in Rennes, what time is it in Istanbul?
At 6:00 PM in Rennes, clocks in Istanbul show 7:00 PM.
When do working hours in Rennes and in Istanbul overlap?
Working hours (9:00 AM–6:00 PM) overlap from 9:00 AM to 5:00 PM in Rennes, which is 10:00 AM to 6:00 PM in Istanbul.
When is it already the next day in Istanbul?
From 11:00 PM in Rennes it is already the next day in Istanbul. The other way round, until 1:00 AM in Istanbul it is still the previous day in Rennes.
Does the time gap between Rennes and Istanbul change during the year?
Yes – daylight saving time is used in Rennes but not in Istanbul. From October 25, 2026, Istanbul will be 2 hours ahead of Rennes.
