Alton to Istanbul: time difference
Istanbul is 2 h ahead of Alton. 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.
Alton 02:13 2:13 AM Istanbul 04:13 4:13 AM You –:–
02:13 2:13 AM
British Summer Time · UTC+1
☀️ 07:36 · 🌙 18:03
04:13 4:13 AM
GMT+03:00 · UTC+3
☀️ 07:21 · 🌙 18:18
·
+2 h
Istanbul is 2 h ahead of Alton.
When you, Alton 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
🇬🇧 Alton
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
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 1 1 AM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇬🇧 Alton | 🇹🇷 Istanbul |
|---|---|---|
| Local time | 02:13 | 04:13 |
| Local date | Tuesday, October 20, 2026 | Tuesday, October 20, 2026 |
| Time zone | British Summer Time | GMT+03:00 |
| UTC offset | UTC+1 | UTC+3 |
| Offset from Alton | — | +2 h |
| IANA zone | Europe/London | Europe/Istanbul |
| Daylight saving | On summer time → UTC+0, Oct 25, 01:00 | Not observed |
| Sunrise | 07:36 | 07:21 |
| Sunset | 18:03 | 18:18 |
| Daylight | 10 h 27 min | 10 h 57 min |
| People on this clock | 17,816 | 15,701,602 |
Compare Alton with another city
More comparisons with Alton: the time zones next to it and the far side of the clock.
Big time differences
Alton and Istanbul: common questions
What is the time difference between Alton and Istanbul?
Istanbul is 2 hours ahead: it uses UTC+3, while Alton is on UTC+1.
If it is 9:00 AM in Alton, what time is it in Istanbul?
At 9:00 AM in Alton, clocks in Istanbul show 11:00 AM.
What time is it in Istanbul when it is 6:00 PM in Alton?
When it is 6:00 PM in Alton, it is 8:00 PM in Istanbul.
Is there a time when both Alton and Istanbul are at work?
Yes: from 9:00 AM to 4:00 PM in Alton (11:00 AM to 6:00 PM in Istanbul), the working days (9:00 AM–6:00 PM) overlap.
When is it already the next day in Istanbul?
From 10:00 PM in Alton it is already the next day in Istanbul. The other way round, until 2:00 AM in Istanbul it is still the previous day in Alton.
Is the time difference between Alton and Istanbul the same all year?
No. Only Alton switches to summer time, so the gap changes twice a year. From October 25, 2026, Istanbul will be 3 hours ahead of Alton.
