Istanbul to Chatham: time difference
Chatham 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 13:38 1:38 PM Chatham 11:38 11:38 AM You –:–
13:38 1:38 PM
GMT+03:00 · UTC+3
☀️ 07:19 · 🌙 18:21
11:38 11:38 AM
British Summer Time · UTC+1
☀️ 07:27 · 🌙 18:01
·
−2 h
Chatham is 2 h behind Istanbul.
When you, Istanbul and Chatham 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
🇬🇧 Chatham
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 | 🇬🇧 Chatham |
|---|---|---|
| Local time | 13:38 | 11:38 |
| Local date | Sunday, October 18, 2026 | Sunday, October 18, 2026 |
| Time zone | GMT+03:00 | British Summer Time |
| UTC offset | UTC+3 | UTC+1 |
| Offset from Istanbul | — | −2 h |
| IANA zone | Europe/Istanbul | Europe/London |
| Daylight saving | Not observed | On summer time → UTC+0, Oct 25, 01:00 |
| Sunrise | 07:19 | 07:27 |
| Sunset | 18:21 | 18:01 |
| Daylight | 11 h 2 min | 10 h 34 min |
| People on this clock | 15,701,602 | 76,792 |
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 Chatham: common questions
How many hours behind Istanbul is Chatham?
The clocks in Chatham are 2 hours behind those in Istanbul (UTC+1 and UTC+3).
What time is it in Chatham at the start of the working day in Istanbul?
The working day in Istanbul starts at 9:00 AM; in Chatham it is 7:00 AM at that moment.
What time is it in Chatham at the end of the working day in Istanbul?
The working day in Istanbul ends at 6:00 PM; in Chatham it is 4:00 PM at that moment.
When do working hours in Istanbul and in Chatham overlap?
Working hours (9:00 AM–6:00 PM) overlap from 11:00 AM to 6:00 PM in Istanbul, which is 9:00 AM to 4:00 PM in Chatham.
When does the date change in Chatham compared with Istanbul?
The new day starts in Chatham later: until 2:00 AM in Istanbul, it is still the previous day there. From 10:00 PM in Chatham, Istanbul is already on the next day.
Does the time difference between Istanbul and Chatham change?
Yes. The clocks change only in Chatham. From October 25, 2026, Chatham will be 3 hours behind Istanbul.
