Clocks
Time difference: London and Tehran
Tehran is 3 hours 30 minutes ahead of London.
London, United Kingdom UTC+0
00:00:00
Wednesday, September 30, 2026
Syncing…
Tehran, Iran UTC+3:30
00:00:00
Wednesday, September 30, 2026
Syncing…
Hour by hour
| London | Tehran |
|---|---|
| 00:00 | 03:30 |
| 01:00 | 04:30 |
| 02:00 | 05:30 |
| 03:00 | 06:30 |
| 04:00 | 07:30 |
| 05:00 | 08:30 |
| 06:00 | 09:30 |
| 07:00 | 10:30 |
| 08:00 | 11:30 |
| 09:00 | 12:30 |
| 10:00 | 13:30 |
| 11:00 | 14:30 |
| 12:00 | 15:30 |
| 13:00 | 16:30 |
| 14:00 | 17:30 |
| 15:00 | 18:30 |
| 16:00 | 19:30 |
| 17:00 | 20:30 |
| 18:00 | 21:30 |
| 19:00 | 22:30 |
| 20:00 | 23:30 |
| 21:00 | 00:30 (next day) |
| 22:00 | 01:30 (next day) |
| 23:00 | 02:30 (next day) |
When the difference changes
Daylight saving time starts and ends on different dates in London and Tehran, so the gap is not the same all year:
| From | Until | Tehran is |
|---|---|---|
| 1 January 2026 | 29 March 2026 | 3 hours 30 minutes ahead of London |
| 29 March 2026 | 25 October 2026 | 2 hours 30 minutes ahead of London |
| 25 October 2026 | 28 March 2027 | 3 hours 30 minutes ahead of London |
| 28 March 2027 | 31 October 2027 | 2 hours 30 minutes ahead of London |
| 31 October 2027 | 31 December 2027 | 3 hours 30 minutes ahead of London |
London uses the Europe/London time zone and Tehran uses Asia/Tehran. The times above come from the IANA time zone database.