Cardiff to Istanbul: time difference
Istanbul is 2 h ahead of Cardiff. 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.
Cardiff 04:31 4:31 AM Istanbul 06:31 6:31 AM You –:–
04:31 4:31 AM
British Summer Time · UTC+1
☀️ 07:28 · 🌙 18:33
06:31 6:31 AM
GMT+03:00 · UTC+3
☀️ 07:10 · 🌙 18:33
·
+2 h
Istanbul is 2 h ahead of Cardiff.
When you, Cardiff 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
🇬🇧 Cardiff
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 | 🇬🇧 Cardiff | 🇹🇷 Istanbul |
|---|---|---|
| Local time | 04:31 | 06:31 |
| Local date | Saturday, October 10, 2026 | Saturday, October 10, 2026 |
| Time zone | British Summer Time | GMT+03:00 |
| UTC offset | UTC+1 | UTC+3 |
| Offset from Cardiff | — | +2 h |
| IANA zone | Europe/London | Europe/Istanbul |
| Daylight saving | On summer time → UTC+0, Oct 25, 01:00 | Not observed |
| Sunrise | 07:28 | 07:10 |
| Sunset | 18:33 | 18:33 |
| Daylight | 11 h 4 min | 11 h 23 min |
| People on this clock | 346,100 | 15,701,602 |
Compare Cardiff with another city
More comparisons with Cardiff: the time zones next to it and the far side of the clock.
Big time differences
Cardiff and Istanbul: common questions
How many hours ahead of Cardiff is Istanbul?
The clocks in Istanbul are 2 hours ahead of those in Cardiff (UTC+3 and UTC+1).
What time is it in Istanbul at the start of the working day in Cardiff?
The working day in Cardiff starts at 9:00 AM; in Istanbul it is 11:00 AM at that moment.
What time is it in Istanbul at the end of the working day in Cardiff?
The working day in Cardiff ends at 6:00 PM; in Istanbul it is 8:00 PM at that moment.
When is a good time to call Istanbul from Cardiff?
Between 9:00 AM and 4:00 PM in Cardiff – that is 11:00 AM to 6:00 PM in Istanbul – both places are within working hours (9:00 AM–6:00 PM).
When is it already the next day in Istanbul?
From 10:00 PM in Cardiff 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 Cardiff.
Does the time difference between Cardiff and Istanbul change?
Yes. The clocks change only in Cardiff. From October 25, 2026, Istanbul will be 3 hours ahead of Cardiff.
