When do the clocks change?
The clocks go forward 1 hour at 1am on
At 1am GMT it becomes 2am BST. You lose an hour in bed, but it stays light for an hour longer in the evening.
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The UK is on Greenwich Mean Time (GMT), which is UTC+0.
Clock change dates
The clocks go forward on the last Sunday in March and back on the last Sunday in October.
| Year | Clocks go forward (1am) | Clocks go back (2am) |
|---|---|---|
| 2026 | ||
| 2027 | ||
| 2028 | ||
| 2029 | ||
| 2030 | ||
| 2031 | ||
| 2032 | ||
| 2033 | ||
| 2034 | ||
| 2035 |
What happens when the clocks change
In March, the clocks go forward
At 1am the clocks jump straight to 2am, so that night is an hour shorter. The UK moves from GMT to British Summer Time (BST). Sunrise and sunset are both an hour later by the clock: darker mornings, lighter evenings.
In October, the clocks go back
At 2am the clocks go back to 1am, so the hour from 1am to 2am happens twice. The UK returns to GMT. Sunrise and sunset are both an hour earlier: lighter mornings, darker evenings.
Phones, computers and anything else connected to the internet change on their own. Ovens, microwaves, central heating timers and many car clocks need changing by hand. More questions about the clock change