Celje to Istanbul: time difference
Istanbul is 1 h ahead of Celje. 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.
Celje 16:17 4:17 PM Istanbul 17:17 5:17 PM You –:–
16:17 4:17 PM
Central European Summer Time · UTC+2
☀️ 07:23 · 🌙 18:06
17:17 5:17 PM
GMT+03:00 · UTC+3
☀️ 07:21 · 🌙 18:18
·
+1 h
Istanbul is 1 h ahead of Celje.
When you, Celje 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
🇸🇮 Celje
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 | 🇸🇮 Celje | 🇹🇷 Istanbul |
|---|---|---|
| Local time | 16:17 | 17:17 |
| 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 Celje | — | +1 h |
| IANA zone | Europe/Ljubljana | Europe/Istanbul |
| Daylight saving | On summer time → UTC+1, Oct 25, 02:00 | Not observed |
| Sunrise | 07:23 | 07:21 |
| Sunset | 18:06 | 18:18 |
| Daylight | 10 h 43 min | 10 h 57 min |
| People on this clock | 37,872 | 15,701,602 |
Compare Celje with another city
More comparisons with Celje: the time zones next to it and the far side of the clock.
Big time differences
Celje and Istanbul: common questions
How many hours ahead of Celje is Istanbul?
The clocks in Istanbul are 1 hour ahead of those in Celje (UTC+3 and UTC+2).
What time is it in Istanbul at the start of the working day in Celje?
The working day in Celje starts at 9:00 AM; in Istanbul it is 10:00 AM at that moment.
What time is it in Istanbul when it is 6:00 PM in Celje?
When it is 6:00 PM in Celje, it is 7:00 PM in Istanbul.
When is a good time to call Istanbul from Celje?
Between 9:00 AM and 5:00 PM in Celje – that is 10:00 AM to 6:00 PM in Istanbul – both places are within working hours (9:00 AM–6:00 PM).
When is it already the next day in Istanbul?
From 11:00 PM in Celje 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 Celje.
Does the time difference between Celje and Istanbul change?
Yes. The clocks change only in Celje. From October 25, 2026, Istanbul will be 2 hours ahead of Celje.
