Saturday 30 October 2021 8:46 AM UTC
LONDON Oct 31: In the early hours of Sunday October 31, 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.
In the UK the clocks go forward 1 hour at 1am on the last Sunday in March, and back 1 hour at 2am on the last Sunday in October.
The period when the clocks are 1 hour ahead is called British Summer Time (BST). There’s more daylight in the evenings and less in the mornings (sometimes called Daylight Saving Time).
When the clocks go back, the UK is on Greenwich Mean Time (GMT).
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