• BST Time to CHAST Time Converter

    BST = UTC + 11:00

    17:18:46

    Friday, December 12, 2025

    CHADT = UTC + 13:45

    20:03:46

    Friday, December 12, 2025

    BST(Bougainville Standard Time) and CHADT(Chatham Island Daylight Time) Mapping Table
    Bougainville Standard Time(BST)Chatham Island Daylight Time(CHADT)
    00:0002:45
    01:0003:45
    02:0004:45
    03:0005:45
    04:0006:45
    05:0007:45
    06:0008:45
    07:0009:45
    08:0010:45
    09:0011:45
    10:0012:45
    11:0013:45
    12:0014:45
    13:0015:45
    14:0016:45
    15:0017:45
    16:0018:45
    17:0019:45
    18:0020:45
    19:0021:45
    20:0022:45
    21:0023:45
    22:0000:45+1 day
    23:0001:45+1 day

    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)

    CHADT(Chatham Island Daylight Time)

    Chatham Island Daylight Time(CHADT) is 13:45 hours ahead of Coordinated Universal(UTC) Time.This timezone is a Daylight Saving Time timezone and is used in: PacificChatham Island Daylight Time is a half-hour time zone. Its local time differs by 45 minutes instead of the normal whole hour.

    Typical City of CHADT (Chatham Island Daylight Time)

    New Zealand - Chatham Islands (Summer)