• IRST Time to GMT Time Converter

    IRST = UTC + 03:30

    16:28:24

    Monday, October 20, 2025

    BST = UTC + 01:00

    13:58:24

    Monday, October 20, 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)