When do the clocks change?
The clocks next go forward on Sunday 28 March 2027, at 1am Greenwich Mean Time.
From the Summer Time Act 1972 and the Summer Time Order 2002.
Clocks go forward
Sunday 28 March 2027
At 1am the clocks go forward to 2am British Summer Time, so you lose an hour.
UK clock changes
| Year | Clocks go forward | Clocks go back |
|---|---|---|
| 2025 | Sunday 30 March | Sunday 26 October |
| 2026 | Sunday 29 March | Sunday 25 October |
| 2027 | Sunday 28 March | Sunday 31 October |
| 2028 | Sunday 26 March | Sunday 29 October |
| 2029 | Sunday 25 March | Sunday 28 October |
| 2030 | Sunday 31 March | Sunday 27 October |
| 2031 | Sunday 30 March | Sunday 26 October |
| 2032 | Sunday 28 March | Sunday 31 October |
The rule
British Summer Time starts at 1am Greenwich Mean Time on the last Sunday in March, and ends at 1am Greenwich Mean Time on the last Sunday in October. That is the rule in the Summer Time Order 2002. In spring, 1am becomes 2am. In autumn, 2am British Summer Time becomes 1am again.
The dates are worked out from that rule. GOV.UK publishes the same dates on its when do the clocks change page. Rule checked 14 November 2026.
Remembering which way
"Spring forward, fall back": in spring the clocks go forward an hour, and in autumn (fall) they go back an hour. Phones and most computers change by themselves.