Istanbul to Guelma: time difference
Guelma is 2 h behind Istanbul. Live clocks for both, the working hours they share, and how each one sits against your own time.
−2 h
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Istanbul 05:31 5:31 AM Guelma 03:31 3:31 AM You –:–
05:31 5:31 AM
GMT+03:00 · UTC+3
☀️ 07:19 · 🌙 18:21
03:31 3:31 AM
Central European Standard Time · UTC+1
☀️ 06:40 · 🌙 17:52
·
−2 h
Guelma is 2 h behind Istanbul.
When you, Istanbul and Guelma 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
🇩🇿 Guelma
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 21 9 PM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇹🇷 Istanbul | 🇩🇿 Guelma |
|---|---|---|
| Local time | 05:31 | 03:31 |
| Local date | Sunday, October 18, 2026 | Sunday, October 18, 2026 |
| Time zone | GMT+03:00 | Central European Standard Time |
| UTC offset | UTC+3 | UTC+1 |
| Offset from Istanbul | — | −2 h |
| IANA zone | Europe/Istanbul | Africa/Algiers |
| Daylight saving | Not observed | Not observed |
| Sunrise | 07:19 | 06:40 |
| Sunset | 18:21 | 17:52 |
| Daylight | 11 h 2 min | 11 h 11 min |
| People on this clock | 15,701,602 | 120,847 |
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 Guelma: common questions
How far behind Istanbul is Guelma?
Guelma is 2 hours behind Istanbul: UTC+1 against UTC+3.
What time is it in Guelma at the start of the working day in Istanbul?
The working day in Istanbul starts at 9:00 AM; in Guelma it is 7:00 AM at that moment.
If it is 6:00 PM in Istanbul, what time is it in Guelma?
At 6:00 PM in Istanbul, clocks in Guelma show 4:00 PM.
When is a good time to call Guelma from Istanbul?
Between 11:00 AM and 6:00 PM in Istanbul – that is 9:00 AM to 4:00 PM in Guelma – both places are within working hours (9:00 AM–6:00 PM).
When is it still the previous day in Guelma?
Until 2:00 AM in Istanbul it is still the previous day in Guelma. The other way round, from 10:00 PM in Guelma it is already the next day in Istanbul.
Does the time gap between Istanbul and Guelma change during the year?
No, the clocks change neither in Istanbul nor in Guelma, so the gap is 2 hours all year round.
