Istanbul to Les Ulis: time difference
Les Ulis is 1 h behind Istanbul. Live clocks for both, the working hours they share, and how each one sits against your own time.
−1 h
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Istanbul 05:57 5:57 AM Les Ulis 04:57 4:57 AM You –:–
05:57 5:57 AM
GMT+03:00 · UTC+3
☀️ 07:17 · 🌙 18:24
04:57 4:57 AM
Central European Summer Time · UTC+2
☀️ 08:13 · 🌙 19:02
·
−1 h
Les Ulis is 1 h behind Istanbul.
When you, Istanbul and Les Ulis 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
🇫🇷 Les Ulis
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 21 9 PM 22 10 PM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇹🇷 Istanbul | 🇫🇷 Les Ulis |
|---|---|---|
| Local time | 05:57 | 04:57 |
| Local date | Friday, October 16, 2026 | Friday, October 16, 2026 |
| Time zone | GMT+03:00 | Central European Summer Time |
| UTC offset | UTC+3 | UTC+2 |
| Offset from Istanbul | — | −1 h |
| IANA zone | Europe/Istanbul | Europe/Paris |
| Daylight saving | Not observed | On summer time → UTC+1, Oct 25, 02:00 |
| Sunrise | 07:17 | 08:13 |
| Sunset | 18:24 | 19:02 |
| Daylight | 11 h 7 min | 10 h 49 min |
| People on this clock | 15,701,602 | 25,253 |
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 Les Ulis: common questions
How many hours behind Istanbul is Les Ulis?
The clocks in Les Ulis are 1 hour behind those in Istanbul (UTC+2 and UTC+3).
What time is it in Les Ulis when it is 9:00 AM in Istanbul?
When it is 9:00 AM in Istanbul, it is 8:00 AM in Les Ulis.
What time is it in Les Ulis when it is 6:00 PM in Istanbul?
When it is 6:00 PM in Istanbul, it is 5:00 PM in Les Ulis.
When is a good time to call Les Ulis from Istanbul?
Between 10:00 AM and 6:00 PM in Istanbul – that is 9:00 AM to 5:00 PM in Les Ulis – both places are within working hours (9:00 AM–6:00 PM).
Until what time in Istanbul is it still yesterday in Les Ulis?
Before 1:00 AM in Istanbul, the date in Les Ulis has not changed yet. From 11:00 PM in Les Ulis, it is already the next day in Istanbul.
Does the time gap between Istanbul and Les Ulis change during the year?
Yes – daylight saving time is used in Les Ulis but not in Istanbul. From October 25, 2026, Les Ulis will be 2 hours behind Istanbul.
