Tehran to London Time Difference
London is 2 hours 30 min behind Tehran. When it is noon in Tehran, it is 9.5:00 in London.
Tehran (UTC+3:30) → London (UTC+1)
🕐 Interactive Time Explorer
When it's 15:00 in Tehran, it's 12.5:00 in London
Drag the slider to see corresponding times in both cities
🤝 Best Meeting Times
Tehran & London✓ Perfect Match (5 hours)
◐ Extended Hours (5 hours)
✈️ Travel Information
Distance
4,397 km
Est. Flight Time
~6.2h
Time Difference
-2.5h
Work Hours Overlap
5h
Good
🔴 Office Closed
Tomorrow 12:00
12:00 - 17:00
⏰ Quick Conversion
06:00
Tehran
3.5:00
London
09:00
Tehran
6.5:00
London
12:00
Tehran
9.5:00
London
15:00
Tehran
12.5:00
London
18:00
Tehran
15.5:00
London
21:00
Tehran
18.5:00
London
00:00
Tehran
21.5:00
London (-1)
03:00
Tehran
0.5:00
London
Frequently Asked Questions
How many hours is Tehran ahead of London?
London is 2 hours 30 min behind Tehran. When it is 12:00 noon in Tehran, it is 9.5:00 in London. Tehran operates on Asia/Tehran (UTC+3.5), while London uses Europe/London (UTC+1).
What is the best time to call London from Tehran?
There are 6 hours of overlapping business time (9 AM–5 PM) between Tehran and London. The best window is 12:00–18:00 Tehran time (9.5:00–15.5:00 in London).
Does the Tehran to London time difference change throughout the year?
The time difference can shift by up to one hour when either city observes Daylight Saving Time (DST). DST transition dates differ between countries — typically March/April in the Northern Hemisphere and October in the Southern Hemisphere. Always verify the live difference above when scheduling important meetings near DST changeover dates.
Flying between Tehran and London
The distance between Tehran and London is approximately 4,397 km. A direct flight typically takes around 6.2 hours. Your arrival clock will show local London time — use our Flight Time Calculator to predict exact arrival times.