When do the clocks go forward for British Summer Time 2026?
Clocks spring forward on Sunday 29 March 2026. At 01:00 UTC, London moves straight to 02:00 BST. You lose an hour of sleep. The evening gains an hour of daylight.
That 01:00 UTC trigger is deliberate. It lands after pubs close and before most rail services start. The Summer Time Act 1972 and the Summer Time Order 2002 set this rule. Both remain in force after Brexit.
On the March equinox (20 March 2026), London gets 12 hours 6 minutes of daylight. By the June solstice (21 June 2026), that stretches to 16 hours 39 minutes. The clock change pushes that extra daylight into the evening.
When do the clocks go back for British Summer Time 2026?
BST 2026 ends on Sunday 25 October. At 02:00 BST, clocks fall back to 01:00 GMT. You gain an hour of sleep. Evenings darken an hour earlier.
The rule is fixed: last Sunday of October, every year. On the September equinox (22 September 2026), London has 12 hours 17 minutes of daylight. By the December solstice (21 December 2026), that collapses to 7 hours 50 minutes. The clock change shifts what little daylight remains into the morning.
Has British Summer Time 2026 been changed or cancelled?
No. The 2026 dates follow the standard pattern the UK kept after leaving the EU: last Sunday of March to last Sunday of October. This has been in place since 2002 and has not changed.
No DST abolition bills have passed. No government consultation has produced legislation. In October 2024 the British Sleep Society recommended permanent GMT, citing circadian health evidence. No action followed. If you want to check for any recent Private Members’ Bills, consult the UK Parliament website directly.
How does British Summer Time 2026 shift time differences?
London’s offset against other cities changes when the clocks move. On 15 January 2026 (GMT) and 15 July 2026 (BST), the differences are:
| City | January 2026 (GMT) | July 2026 (BST) |
|---|---|---|
| New York | 5 hours behind | 5 hours behind |
| Los Angeles | 8 hours behind | 8 hours behind |
| Paris | 1 hour ahead | 1 hour ahead |
| Dubai | 4 hours ahead | 3 hours ahead |
| Mumbai | 5.5 hours ahead | 4.5 hours ahead |
| Singapore | 8 hours ahead | 7 hours ahead |
| Tokyo | 9 hours ahead | 8 hours ahead |
| Sydney | 11 hours ahead | 9 hours ahead |
| Johannesburg | 2 hours ahead | 1 hour ahead |
| SĂŁo Paulo | 3 hours behind | 4 hours behind |
| Chicago | 6 hours behind | 6 hours behind |
Dubai, Mumbai, Singapore, Tokyo, Sydney, Johannesburg and SĂŁo Paulo all shift because those cities do not observe DST on the same dates, or at all.
London Stock Exchange
Trading hours are 08:00 to 16:30 local time. The best overlap with New York (13:00 to 16:30 UK time) stays the same, but the UK end of day moves relative to US clocks.
Trains
National Rail timetables change twice yearly, in May and December. On clock change night, trains running near 01:00 GMT or BST are held or adjusted.
Sleep
The spring change costs an hour. The autumn change adds one. Shifting bedtimes by 15 minutes a day for four days before the change, starting on the Wednesday, works for both.
School holidays
Autumn half-term often falls near the October clock change weekend. Dates vary by local authority.
Parents of infants and toddlers
Ignore anyone who says “just let them adjust.” Babies and young children cannot shift their sleep schedule by an hour overnight. Shift bedtimes by 15 minutes per day for four days before the change, starting on the Wednesday. That works for spring and autumn. Letting the child “sleep it off” on Sunday morning guarantees a cranky 05:00 wake-up.
Why does British Summer Time start at 01:00 UTC and not midnight?
The 01:00 UTC slot avoids disrupting the overnight period. Midnight clock changes would tangle with New Year’s Eve celebrations and shift the date boundary. The chosen time falls after most pubs close and before early morning rail services begin.
Does the Republic of Ireland use British Summer Time?
No, but the clock time matches. The Republic of Ireland calls its summer time Irish Standard Time (IST, UTC+1) and uses GMT in winter. Portugal uses Western European Time (UTC+0) and Western European Summer Time (UTC+1) on the same dates.
Do all parts of the UK observe British Summer Time?
Yes. England, Scotland, Wales and Northern Ireland all use BST and GMT on the same dates. There is no regional variation. Time is a reserved matter for Westminster; the devolved administrations have no separate time zone powers.
What happens if I am on a flight when British Summer Time 2026 begins?
Aircraft operate on UTC for air traffic control. Your ticket shows local time at departure and arrival airports. If you fly overnight on the Saturday of the clock change, your arrival time may shift by an hour. Airlines adjust schedules in advance. Check your booking confirmation.
When is the next clock change after October 2026?
BST 2027 begins on Sunday 28 March 2027 at 01:00 UTC. Clocks go forward to 02:00 BST. BST 2027 ends on Sunday 31 October 2027 at 02:00 BST, falling back to 01:00 GMT.