Iran to London: time difference
London is 2 h 30 min behind Iran. Live clocks for both, the working hours they share, and how each one sits against your own time.
−2 h 30 min
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Iran 05:59 5:59 AM London 03:29 3:29 AM You –:–
05:59 5:59 AM
Iran Standard Time · UTC+3:30
☀️ 06:07 · 🌙 17:37
03:29 3:29 AM
British Summer Time · UTC+1
☀️ 07:16 · 🌙 18:20
·
−2 h 30 min
London is 2 h 30 min behind Iran.
When you, Iran and London are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇮🇷 Iran
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
🇬🇧 London
21:30 9:30 PM 22:30 10:30 PM 23:30 11:30 PM 0:30 12:30 AM 1:30 1:30 AM 2:30 2:30 AM 3:30 3:30 AM 4:30 4:30 AM 5:30 5:30 AM 6:30 6:30 AM 7:30 7:30 AM 8:30 8:30 AM 9:30 9:30 AM 10:30 10:30 AM 11:30 11:30 AM 12:30 12:30 PM 13:30 1:30 PM 14:30 2:30 PM 15:30 3:30 PM 16:30 4:30 PM 17:30 5:30 PM 18:30 6:30 PM 19:30 7:30 PM 20:30 8:30 PM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇮🇷 Iran | 🇬🇧 London |
|---|---|---|
| Local time | 05:59 | 03:29 |
| Local date | Saturday, October 10, 2026 | Saturday, October 10, 2026 |
| Time zone | Iran Standard Time | British Summer Time |
| UTC offset | UTC+3:30 | UTC+1 |
| Offset from Iran | — | −2 h 30 min |
| IANA zone | Asia/Tehran | Europe/London |
| Daylight saving | Not observed | On summer time → UTC+0, Oct 25, 01:00 |
| Sunrise | 06:07 | 07:16 |
| Sunset | 17:37 | 18:20 |
| Daylight | 11 h 31 min | 11 h 4 min |
| People on this clock | 86,758,304 | 8,908,083 |
Compare Iran with another city
More comparisons with Iran: the time zones next to it and the far side of the clock.
Big time differences
Iran and London: common questions
How many hours behind Iran is London?
The clocks in London are 2 hours and 30 minutes behind those in Iran (UTC+1 and UTC+3:30).
What time is it in London at the start of the working day in Iran?
The working day in Iran starts at 9:00 AM; in London it is 6:30 AM at that moment.
What time is it in London at the end of the working day in Iran?
The working day in Iran ends at 6:00 PM; in London it is 3:30 PM at that moment.
When is a good time to call London from Iran?
Between 11:30 AM and 6:00 PM in Iran – that is 9:00 AM to 3:30 PM in London – both places are within working hours (9:00 AM–6:00 PM).
When is it still the previous day in London?
Until 2:30 AM in Iran it is still the previous day in London. The other way round, from 9:30 PM in London it is already the next day in Iran.
Does the time gap between Iran and London change during the year?
Yes – daylight saving time is used in London but not in Iran. From October 25, 2026, London will be 3 hours and 30 minutes behind Iran.
