People across the UK will get an extra hour in bed tonight as the clocks go back and British Summer Time comes to an end.
The clocks will go back by one hour at 2am on Sunday (October 25) when the time will return to 1am and the UK moves from British Summer Time (BST) to Greenwich Mean Time (GMT).
BST is used during the warmer months, when clocks are one hour ahead of GMT to provide more daylight in the evenings.
Greenwich Mean Time takes its name from Greenwich in London, home of the Royal Observatory and the historic basis for measuring time from the Greenwich Meridian.
The change takes place on the last Sunday of October each year, while the clocks go forward again on the last Sunday in March.
Most smartphones, computers and other internet-connected devices should update automatically.
Traditional clocks, watches and some appliances may need to be changed manually.
Anyone relying on an alarm or travelling early on Sunday may therefore want to double-check the time before setting off.
The clocks will next go forward on Sunday, March 28, 2027, marking the return of British Summer Time.
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