AST Time to BST Time Converter

Warning! AST has automatically switched to ADT

AST stands for Atlantic Standard Time (NOT in use)

ADT stands for Atlantic Daylight Time (in use)

BST stands for British Summer Time (in use)

ADT = UTC - 03:00

01:32:51

Monday, April 28, 2025

BST = UTC + 01:00

05:32:51

Monday, April 28, 2025

ADT(Atlantic Daylight Time) and BST(British Summer Time) Mapping Table
Atlantic Daylight Time(ADT)	British Summer Time(BST)
00:00	04:00
01:00	05:00
02:00	06:00
03:00	07:00
04:00	08:00
05:00	09:00
06:00	10:00
07:00	11:00
08:00	12:00
09:00	13:00
10:00	14:00
11:00	15:00
12:00	16:00
13:00	17:00
14:00	18:00
15:00	19:00
16:00	20:00
17:00	21:00
18:00	22:00
19:00	23:00
20:00	00:00+1 day
21:00	01:00+1 day
22:00	02:00+1 day
23:00	03:00+1 day

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)

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)