Istanbul to Kolbotn: time difference
Kolbotn 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 19:35 7:35 PM Kolbotn 18:35 6:35 PM You –:–
19:35 7:35 PM
GMT+03:00 · UTC+3
☀️ 07:18 · 🌙 18:22
18:35 6:35 PM
Central European Summer Time · UTC+2
☀️ 08:00 · 🌙 18:05
·
−1 h
Kolbotn is 1 h behind Istanbul.
When you, Istanbul and Kolbotn 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
🇳🇴 Kolbotn
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 | 🇳🇴 Kolbotn |
|---|---|---|
| Local time | 19:35 | 18:35 |
| Local date | Saturday, October 17, 2026 | Saturday, October 17, 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/Oslo |
| Daylight saving | Not observed | On summer time → UTC+1, Oct 25, 02:00 |
| Sunrise | 07:18 | 08:00 |
| Sunset | 18:22 | 18:05 |
| Daylight | 11 h 5 min | 10 h 5 min |
| People on this clock | 15,701,602 | 4,500 |
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 Kolbotn: common questions
How far behind Istanbul is Kolbotn?
Kolbotn is 1 hour behind Istanbul: UTC+2 against UTC+3.
What time is it in Kolbotn when it is 9:00 AM in Istanbul?
When it is 9:00 AM in Istanbul, it is 8:00 AM in Kolbotn.
What time is it in Kolbotn at the end of the working day in Istanbul?
The working day in Istanbul ends at 6:00 PM; in Kolbotn it is 5:00 PM at that moment.
When is a good time to call Kolbotn from Istanbul?
Between 10:00 AM and 6:00 PM in Istanbul – that is 9:00 AM to 5:00 PM in Kolbotn – both places are within working hours (9:00 AM–6:00 PM).
When does the date change in Kolbotn compared with Istanbul?
The new day starts in Kolbotn later: until 1:00 AM in Istanbul, it is still the previous day there. From 11:00 PM in Kolbotn, Istanbul is already on the next day.
Is the time difference between Istanbul and Kolbotn the same all year?
No. Only Kolbotn switches to summer time, so the gap changes twice a year. From October 25, 2026, Kolbotn will be 2 hours behind Istanbul.
