When do the clocks go forward in 2027?

The clocks go forward by one hour on the last Sunday in March. At 1am, the UK moves from Greenwich Mean Time to British Summer Time, and the countdown above runs to that change.

The clock moves from 1am to 2am, making that Sunday 23 hours long. If you keep the same wake-up time, it effectively means an hour less in bed.

The change also moves sunset an hour later by the clock, giving lighter evenings through the summer months.

WhenLast Sunday in March, at 1am

What changesGMT becomes BST — clocks move forward one hour

The nightOne hour shorter

GMT and BST

Greenwich Mean Time is used through the winter. British Summer Time is one hour ahead of GMT and runs from the March change until the clocks go back in October. Phones, computers and many connected devices update automatically, while some clocks in cars, ovens and other appliances still need to be changed manually.

The spring and autumn changes are shown at different local clock times, so check both the date and the stated time when planning around the change.

Frequently asked questions

What time do the clocks go forward?

At 1am on the last Sunday in March. The clock moves forward to 2am.

Do I lose or gain an hour?

You lose one hour from that night, making the Sunday 23 hours long.

What is BST?

British Summer Time is one hour ahead of Greenwich Mean Time and runs from the March clock change until the October change.

Do my devices change automatically?

Phones, computers and many smart devices normally update automatically. Some cars, ovens and other clocks still need to be changed manually.

Clocks Go Forward