Istanbul to Alton: time difference
Alton is 2 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 04:59 4:59 AM Alton 02:59 2:59 AM You –:–
04:59 4:59 AM
GMT+03:00 · UTC+3
☀️ 07:21 · 🌙 18:18
02:59 2:59 AM
British Summer Time · UTC+1
☀️ 07:36 · 🌙 18:03
·
−2 h
Alton is 2 h behind Istanbul.
When you, Istanbul and Alton 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
🇬🇧 Alton
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 | 🇬🇧 Alton |
|---|---|---|
| Local time | 04:59 | 02:59 |
| Local date | Tuesday, October 20, 2026 | Tuesday, October 20, 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 | 07:21 | 07:36 |
| Sunset | 18:18 | 18:03 |
| Daylight | 10 h 57 min | 10 h 27 min |
| People on this clock | 15,701,602 | 17,816 |
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 Alton: common questions
What is the time difference between Istanbul and Alton?
Alton is 2 hours behind: it uses UTC+1, while Istanbul is on UTC+3.
What time is it in Alton when it is 9:00 AM in Istanbul?
When it is 9:00 AM in Istanbul, it is 7:00 AM in Alton.
What time is it in Alton at the end of the working day in Istanbul?
The working day in Istanbul ends at 6:00 PM; in Alton it is 4:00 PM at that moment.
When do working hours in Istanbul and in Alton 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 Alton.
When is it still the previous day in Alton?
Until 2:00 AM in Istanbul it is still the previous day in Alton. The other way round, from 10:00 PM in Alton it is already the next day in Istanbul.
Does the time gap between Istanbul and Alton change during the year?
Yes – daylight saving time is used in Alton but not in Istanbul. From October 25, 2026, Alton will be 3 hours behind Istanbul.
