When Does British Summer Time Start 2025. The clocks go back on sunday october 27 2025, marking the end of british summer time. Discover the key dates for the 2025 daylight saving time transition, including british summer time and how to adjust to the time change.
In the early hours of sunday oct 27, at 2am, the uk will revert to greenwich mean time (gmt) by going back one hour, to 1am, marking the official end of british summertime. The clocks are set to go back in october, as the uk transitions out of british summer time (bst) to greenwich mean time (gmt).
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