Koło to Istanbul: time difference
Istanbul is 1 h ahead of Koło. 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.
Koło 01:05 1:05 AM Istanbul 02:05 2:05 AM You –:–
01:05 1:05 AM
Central European Summer Time · UTC+2
☀️ 07:19 · 🌙 17:43
02:05 2:05 AM
GMT+03:00 · UTC+3
☀️ 07:21 · 🌙 18:18
·
+1 h
Istanbul is 1 h ahead of Koło.
When you, Koło 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
🇵🇱 Koło
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 | 🇵🇱 Koło | 🇹🇷 Istanbul |
|---|---|---|
| Local time | 01:05 | 02:05 |
| 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 Koło | — | +1 h |
| IANA zone | Europe/Warsaw | Europe/Istanbul |
| Daylight saving | On summer time → UTC+1, Oct 25, 02:00 | Not observed |
| Sunrise | 07:19 | 07:21 |
| Sunset | 17:43 | 18:18 |
| Daylight | 10 h 23 min | 10 h 57 min |
| People on this clock | 21,035 | 15,701,602 |
Compare Koło with another city
More comparisons with Koło: the time zones next to it and the far side of the clock.
Big time differences
Koło and Istanbul: common questions
What is the time difference between Koło and Istanbul?
Istanbul is 1 hour ahead: it uses UTC+3, while Koło is on UTC+2.
What time is it in Istanbul at the start of the working day in Koło?
The working day in Koło starts at 9:00 AM; in Istanbul it is 10:00 AM at that moment.
If it is 6:00 PM in Koło, what time is it in Istanbul?
At 6:00 PM in Koło, clocks in Istanbul show 7:00 PM.
When is a good time to call Istanbul from Koło?
Between 9:00 AM and 5:00 PM in Koło – that is 10:00 AM to 6:00 PM in Istanbul – both places are within working hours (9:00 AM–6:00 PM).
When does the date change in Istanbul compared with Koło?
The new day starts in Istanbul earlier: at 11:00 PM in Koło it is already midnight there. Until 1:00 AM in Istanbul, Koło is still on the previous day.
Does the time gap between Koło and Istanbul change during the year?
Yes – daylight saving time is used in Koło but not in Istanbul. From October 25, 2026, Istanbul will be 2 hours ahead of Koło.
