BST time now (British Summer Time)
1:52PM
BST · UTC+1
UTC+1+6 h vs New York (you)London now: GMT, UTC+0
What BST means
BST stands for British Summer Time, UTC+1. It is used in the United Kingdom, the Isle of Man and the Channel Islands.
It is a summer time: the daylight saving form of GMT (UTC+0), one hour ahead. In London it applies from March to October/November: from the last Sunday of March at 1:00 AM to the last Sunday of October at 2:00 AM.
British Summer Time
BST is the UK’s summer time, UTC+1. The Summer Time Act 1972, as amended by the Summer Time Order 2002, sets it from 1 a.m. GMT on the last Sunday of March to 1 a.m. GMT on the last Sunday of October, the same instants as in the EU. In winter the UK is on GMT.
Britain adopted summer time in 1916, a few weeks after Germany, following William Willett’s 1907 proposal (Royal Museums Greenwich). From 1968 to 1971 the UK kept UTC+1 all year as an experiment; tzdata records that period as BST in winter too.
Where and when BST is used
1 zone uses it for part of the year only, switching back to standard time in the other months. Computed from tzdata under the current rules.
| Main city | Time zone | Countries | When |
|---|---|---|---|
| London | Europe/London | United Kingdom, Guernsey, Isle of Man, Jersey | April to October |
How long BST has been used
In the tzdata record, London has used BST since 1916.
BST in the past
Zones whose tzdata history shows BST before 2025 but that no longer use it:
- America/Adak (Adak): 1967–1983
- America/Nome (Nome): 1967–1983
- Europe/Gibraltar (Gibraltar): 1916–1956
- America/La_Paz (La Paz): 1931–1932
- Europe/Dublin (Dublin): 1917–1921
- Atlantic/Bermuda (Hamilton): 1917–1918
BST converted to other zones
Every column is a fixed offset, so this table is valid on any date. Remember that the regions behind some columns switch to summer time (EST to EDT, CET to CEST, GMT to BST); the clock in those cities is then an hour later than the column.
| BST (UTC+1) | UTC (UTC+0) | EST (UTC−5) | PST (UTC−8) | IST (UTC+5:30) | JST (UTC+9) | AEST (UTC+10) | CST (UTC−6) |
|---|---|---|---|---|---|---|---|
| 12:00 AM | 11:00 PM (−1 day) | 6:00 PM (−1 day) | 3:00 PM (−1 day) | 4:30 AM | 8:00 AM | 9:00 AM | 5:00 PM (−1 day) |
| 6:00 AM | 5:00 AM | 12:00 AM | 9:00 PM (−1 day) | 10:30 AM | 2:00 PM | 3:00 PM | 11:00 PM (−1 day) |
| 9:00 AM | 8:00 AM | 3:00 AM | 12:00 AM | 1:30 PM | 5:00 PM | 6:00 PM | 2:00 AM |
| 12:00 PM | 11:00 AM | 6:00 AM | 3:00 AM | 4:30 PM | 8:00 PM | 9:00 PM | 5:00 AM |
| 3:00 PM | 2:00 PM | 9:00 AM | 6:00 AM | 7:30 PM | 11:00 PM | 12:00 AM (+1 day) | 8:00 AM |
| 6:00 PM | 5:00 PM | 12:00 PM | 9:00 AM | 10:30 PM | 2:00 AM (+1 day) | 3:00 AM (+1 day) | 11:00 AM |
| 9:00 PM | 8:00 PM | 3:00 PM | 12:00 PM | 1:30 AM (+1 day) | 5:00 AM (+1 day) | 6:00 AM (+1 day) | 2:00 PM |