• BST Time to D Time Converter

    GMT = UTC + 00:00

    12:52:25

    Saturday, December 13, 2025

    D = UTC + 04:00

    16:52:25

    Saturday, December 13, 2025

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

    GMT(Greenwich Mean Time)

    Greenwich Mean Time(GMT) has no offset from Coordinated Universal(UTC) Time.

    Typical City of GMT (Greenwich Mean Time)

    United Kingdom - London (Winter)
    Iceland - Reykjavik (All Year)
    Sierra Leone - Freetown (All Year)
    Greenland - Danmarkshavn (All Year)
    Antarctica - Troll Station (Summer)

    D(Delta Time Zone)

    Delta Time Zone(D) is 04:00 hours ahead of Coordinated Universal(UTC) Time.

    Typical City of D (Delta Time Zone)

    United Arab Emirates - Abu Dhabi (All Year)