• BST Time to AT Time Converter

    BST = UTC + 01:00

    09:43:04

    Tuesday, August 5, 2025

    AT = UTC - 04:00

    04:43:04

    Tuesday, August 5, 2025

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

    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)

    AT(Atlantic Time)

    Atlantic Time(AT) is 04:00 hours behind Coordinated Universal(UTC) Time.

    Typical City of AT (Atlantic Time)

    Canada - HalifaxBermuda - Hamilton