London to Tehran: time difference
Tehran is 2 h 30 min ahead of London. 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.
London 07:15 7:15 AM Tehran 09:45 9:45 AM You –:–
07:15 7:15 AM
British Summer Time · UTC+1
☀️ 07:16 · 🌙 18:20
09:45 9:45 AM
Iran Standard Time · UTC+3:30
☀️ 06:07 · 🌙 17:37
·
+2 h 30 min
Tehran is 2 h 30 min ahead of London.
When you, London and Tehran are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇬🇧 London
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
🇮🇷 Tehran
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 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
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇬🇧 London | 🇮🇷 Tehran |
|---|---|---|
| Local time | 07:15 | 09:45 |
| Local date | Saturday, October 10, 2026 | Saturday, October 10, 2026 |
| Time zone | British Summer Time | Iran Standard Time |
| UTC offset | UTC+1 | UTC+3:30 |
| Offset from London | — | +2 h 30 min |
| IANA zone | Europe/London | Asia/Tehran |
| Daylight saving | On summer time → UTC+0, Oct 25, 01:00 | Not observed |
| Sunrise | 07:16 | 06:07 |
| Sunset | 18:20 | 17:37 |
| Daylight | 11 h 4 min | 11 h 31 min |
| People on this clock | 8,908,083 | 8,000,000 |
Compare London with another city
More comparisons with London: the time zones next to it and the far side of the clock.
Big time differences
London and Tehran: common questions
What is the time difference between London and Tehran?
Tehran is 2 hours and 30 minutes ahead: it uses UTC+3:30, while London is on UTC+1.
What time is it in Tehran when it is 9:00 AM in London?
When it is 9:00 AM in London, it is 11:30 AM in Tehran.
If it is 6:00 PM in London, what time is it in Tehran?
At 6:00 PM in London, clocks in Tehran show 8:30 PM.
When do working hours in London and in Tehran overlap?
Working hours (9:00 AM–6:00 PM) overlap from 9:00 AM to 3:30 PM in London, which is 11:30 AM to 6:00 PM in Tehran.
When does the date change in Tehran compared with London?
The new day starts in Tehran earlier: at 9:30 PM in London it is already midnight there. Until 2:30 AM in Tehran, London is still on the previous day.
Is the time difference between London and Tehran the same all year?
No. Only London switches to summer time, so the gap changes twice a year. From October 25, 2026, Tehran will be 3 hours and 30 minutes ahead of London.
