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BST — British Summer or Bangladesh Standard Time

BST is ambiguous: it stands for 2 different times, both in use today. When a message says “BST”, the sender’s country usually tells you which one is meant; to be safe, write the UTC offset (for example BST = UTC+1 or BST = UTC+6).

British Summer Time

UTC+01:00

Tue, Sep 29 time in Europe/London UTC+1

BST stands for British Summer Time, UTC+1, 1 hour ahead of UTC. It is used in summer in the United Kingdom, from the last Sunday in March at 01:00 to the last Sunday in October at 02:00; the rest of the year they use GMT (UTC+0).

Countries and territories: United Kingdom, Guernsey, Isle of Man and Jersey.

Zones: Europe/London, Europe/Guernsey, Europe/Isle_of_Man, Europe/Jersey.

Bangladesh Standard Time

UTC+06:00

Tue, Sep 29 time in Asia/Dhaka UTC+6

BST stands for Bangladesh Standard Time, UTC+6, 6 hours ahead of UTC. It is used all year in Bangladesh.

Countries and territories: Bangladesh.

Zones: Asia/Dhaka.