Time difference between London and Tehran
3h 30m
Tehran is 3h 30m ahead of London.
Does daylight saving change it?
Yes. In winter the gap is 3h 30m; in summer it is 2h 30m. Only London observes daylight saving.
Overlapping work hours
Between 09:00 and 15:00 in London, Tehran is also at work — 6 hours a day.
London time → Tehran time
| 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 | 00:30next day |
| 22:00 | 01:30next day |
| 23:00 | 02:30next day |
Standard time (January). During daylight saving each row shifts by an hour.
Frequently asked questions
Q. How many hours is London ahead of Tehran?
3h 30m on standard time. During daylight saving it becomes 2h 30m, an hour more or less.
Q. What time is it in Tehran when it is noon in London?
Read the 12:00 row of the 24-hour table below. The table is on standard time, so each row shifts an hour during daylight saving.
Q. When should we schedule a meeting?
The two cities' work hours (09:00–18:00) overlap for 6 hours a day. Anything inside that window catches both sides at work.