Istanbul to Sion: time difference
Sion 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 10:14 10:14 AM Sion 09:14 9:14 AM You –:–
10:14 10:14 AM
GMT+03:00 · UTC+3
☀️ 07:20 · 🌙 18:19
09:14 9:14 AM
Central European Summer Time · UTC+2
☀️ 07:53 · 🌙 18:39
·
−1 h
Sion is 1 h behind Istanbul.
When you, Istanbul and Sion 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
🇨🇭 Sion
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 | 🇨🇭 Sion |
|---|---|---|
| Local time | 10:14 | 09:14 |
| Local date | Monday, October 19, 2026 | Monday, October 19, 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/Zurich |
| Daylight saving | Not observed | On summer time → UTC+1, Oct 25, 02:00 |
| Sunrise | 07:20 | 07:53 |
| Sunset | 18:19 | 18:39 |
| Daylight | 10 h 59 min | 10 h 46 min |
| People on this clock | 15,701,602 | 34,599 |
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 Sion: common questions
How far behind Istanbul is Sion?
Sion is 1 hour behind Istanbul: UTC+2 against UTC+3.
What time is it in Sion at the start of the working day in Istanbul?
The working day in Istanbul starts at 9:00 AM; in Sion it is 8:00 AM at that moment.
What time is it in Sion when it is 6:00 PM in Istanbul?
When it is 6:00 PM in Istanbul, it is 5:00 PM in Sion.
When do working hours in Istanbul and in Sion overlap?
Working hours (9:00 AM–6:00 PM) overlap from 10:00 AM to 6:00 PM in Istanbul, which is 9:00 AM to 5:00 PM in Sion.
When does the date change in Sion compared with Istanbul?
The new day starts in Sion later: until 1:00 AM in Istanbul, it is still the previous day there. From 11:00 PM in Sion, Istanbul is already on the next day.
Is the time difference between Istanbul and Sion the same all year?
No. Only Sion switches to summer time, so the gap changes twice a year. From October 25, 2026, Sion will be 2 hours behind Istanbul.
