• IRST Time to BST Time Converter

    IRST = UTC + 03:30

    17:44:48

    Saturday, December 13, 2025

    BST = UTC + 11:00

    01:14:48

    Sunday, December 14, 2025

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

    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(Bougainville Standard Time)

    Bougainville Standard Time(BST) is 11:00 hours ahead of Coordinated Universal(UTC) Time.This timezone is used during standard time in: Pacific

    Typical City of BST (Bougainville Standard Time)

    Papua New Guinea - Arawa (All Year)