IRST Time to GMT Time Converter

IRST = UTC + 03:30

12:07:29

Wednesday, October 1, 2025

BST = UTC + 01:00

09:37:29

Wednesday, October 1, 2025

IRST(Iran Standard Time) and BST(British Summer Time) Mapping Table
Iran Standard Time(IRST)British Summer Time(BST)
00:0021:30-1 day
01:0022:30-1 day
02:0023:30-1 day
03:0000:30
04:0001:30
05:0002:30
06:0003:30
07:0004:30
08:0005:30
09:0006:30
10:0007:30
11:0008:30
12:0009:30
13:0010:30
14:0011:30
15:0012:30
16:0013:30
17:0014:30
18:0015:30
19:0016:30
20:0017:30
21:0018:30
22:0019:30
23:0020:30

IRST(Iran Standard Time)

Iran Standard Time(IRST) is 03:30 hours ahead of Coordinated Universal(UTC) Time.This timezone is used during standard time in: AsiaIran Standard Time is a half-hour time zone. Its local time differs by 30 minutes instead of the normal whole hour.

Typical City of IRST (Iran Standard Time)

Iran - Tehran (Winter)

BST(British Summer Time)

British Summer Time(BST) is 01:00 hours ahead of Coordinated Universal(UTC) Time.

Typical City of BST (British Summer Time)

United Kingdom - London (Summer)