Time difference: London and Tehran

Tehran is 2.5 hours ahead of London.

Tehran is 2.5 hours ahead of London. London is UTC+1. Tehran is UTC+3:30.

London on 15 October 2026: sunrise 07:24, sunset 18:07, day length 10 h 43 min.

Tehran on 15 October 2026: sunrise 06:10, sunset 17:29, day length 11 h 19 min.

For London and Tehran: The next clock change in London is 1 hour back on 25 October 2026 at 02:00, from UTC+1 to UTC+0.

For Tehran and London: Tehran has no clock change scheduled in the next year. The last year with a seasonal offset change was 2022. The offset now is UTC+3:30.

When the difference changes
Change
The gap changes on 25 October 2026 at 02:00, when clocks in London move back 1 hour.
The gap changes on 28 March 2027 at 01:00, when clocks in London move forward 1 hour.
The gap changes on 31 October 2027 at 02:00, when clocks in London move back 1 hour.
Working hours from each side
View09:00 to 17:00
From LondonLondon 09:00 to 14:30; Tehran 11:30 to 17:00
From TehranTehran 11:30 to 17:00; London 09:00 to 14:30
Hours in London and Tehran. Shaded cells are 09:00 to 17:00. The stronger shade is when both are.
LondonTehran
00:0002:30
01:0003:30
02:0004:30
03:0005:30
04:0006:30
05:0007:30
06:0008:30
07:0009:30
08:0010:30
09:0011:30
10:0012:30
11:0013:30
12:0014:30
13:0015:30
14:0016:30
15:0017:30
16:0018:30
17:0019:30
18:0020:30
19:0021:30
20:0022:30
21:0023:30
22:0000:30 (next day)
23:0001:30 (next day)
Sun this year
CityLongest dayShortest day
London with Tehran21 June 2026, 16 h 38 min21 December 2026, 7 h 50 min
Tehran with London21 June 2026, 14 h 35 min22 December 2026, 9 h 44 min
Next public holidays
CityDateHoliday
London and Tehran25 December 2026Christmas Day
London and Tehran26 December 2026Boxing Day
Tehran and London13 November 2026ﺷﻬﺎدت ﺣﻀﺮت ﻓﺎﻃﻤﻪ زﻫﺮا ﺳﻼم اﷲ ﻋﻠﯿﻬﺎ
Tehran and London22 December 2026وﻻدت ﺣﻀﺮت اﻣﺎم ﻋﻠﯽ ﻋﻠﯿﻪ اﻟﺴﻼم