• IRST Time to CST Time Converter

    IRST = UTC + 03:30

    15:50:00

    Wednesday, October 22, 2025

    CDT = UTC - 05:00

    07:20:00

    Wednesday, October 22, 2025

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

    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)

    CDT(Central Daylight Time)

    Central Daylight Time(CDT) is 05:00 hours behind Coordinated Universal(UTC) Time.This timezone is a Daylight Saving Time timezone and is used in: North America

    Typical City of CDT (Central Daylight Time)

    USA - Chicago (Summer)