• GMT Time to AST Time Converter

    BST = UTC + 01:00

    03:15:18

    Friday, July 4, 2025

    ADT = UTC - 03:00

    23:15:18

    Thursday, July 3, 2025

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

    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)

    ADT(Atlantic Daylight Time)

    Atlantic Daylight Time(ADT) is 03:00 hours behind Coordinated Universal(UTC) Time.This timezone is a Daylight Saving Time timezone and is used in: North America

    Typical City of ADT (Atlantic Daylight Time)

    Canada - Halifax (Summer)
    Bermuda - Hamilton (Summer)