Istanbul to Keflavik: time difference
Keflavik is 3 h behind Istanbul. 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.
Istanbul 03:17 3:17 AM Keflavik 00:17 12:17 AM You –:–
03:17 3:17 AM
GMT+03:00 · UTC+3
☀️ 07:20 · 🌙 18:19
00:17 12:17 AM
Greenwich Mean Time · UTC+0
☀️ 08:29 · 🌙 18:03
·
−3 h
Keflavik is 3 h behind Istanbul.
When you, Istanbul and Keflavik 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
🇮🇸 Keflavik
21 9 PM 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
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇹🇷 Istanbul | 🇮🇸 Keflavik |
|---|---|---|
| Local time | 03:17 | 00:17 |
| Local date | Monday, October 19, 2026 | Monday, October 19, 2026 |
| Time zone | GMT+03:00 | Greenwich Mean Time |
| UTC offset | UTC+3 | UTC+0 |
| Offset from Istanbul | — | −3 h |
| IANA zone | Europe/Istanbul | Atlantic/Reykjavik |
| Daylight saving | Not observed | Not observed |
| Sunrise | 07:20 | 08:29 |
| Sunset | 18:19 | 18:03 |
| Daylight | 10 h 59 min | 9 h 34 min |
| People on this clock | 15,701,602 | 15,000 |
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 Keflavik: common questions
What is the time difference between Istanbul and Keflavik?
Keflavik is 3 hours behind: it uses UTC+0, while Istanbul is on UTC+3.
What time is it in Keflavik when it is 9:00 AM in Istanbul?
When it is 9:00 AM in Istanbul, it is 6:00 AM in Keflavik.
What time is it in Keflavik at the end of the working day in Istanbul?
The working day in Istanbul ends at 6:00 PM; in Keflavik it is 3:00 PM at that moment.
When is a good time to call Keflavik from Istanbul?
Between 12:00 PM and 6:00 PM in Istanbul – that is 9:00 AM to 3:00 PM in Keflavik – both places are within working hours (9:00 AM–6:00 PM).
When is it still the previous day in Keflavik?
Until 3:00 AM in Istanbul it is still the previous day in Keflavik. The other way round, from 9:00 PM in Keflavik it is already the next day in Istanbul.
Does the time gap between Istanbul and Keflavik change during the year?
No, the clocks change neither in Istanbul nor in Keflavik, so the gap is 3 hours all year round.
