People across the UK will soon be making a familiar adjustment as the clocks go back by one hour next month.
The change marks the end of British Summer Time (BST) and a return to Greenwich Mean Time (GMT), with clocks set to go back at 2am on Sunday, October 25.
The tradition, known as Daylight Saving Time, was first proposed in the early 20th century by British builder and inventor William Willett.
Why the change?
Mr Willett believed people were wasting valuable daylight by sleeping through bright summer mornings.
Although he died before seeing his idea become reality, Britain adopted the system during the First World War in 1916 to save energy and improve productivity.
The current system sees clocks move forward on the last Sunday in March and back on the last Sunday in October.
When the clocks go back, people gain an extra hour in bed, but evenings become darker earlier.
The change means sunrise also arrives earlier.
This can make winter mornings safer for commuters and schoolchildren.
The system remains a subject of debate.
Time to scrap the change?
Some campaigners argue that the UK should adopt a single time all year round, while others believe the current arrangement offers the best compromise between morning and evening daylight.
For now, the twice-yearly tradition continues.
People are reminded to set any manual clocks back by one hour before going to bed on Saturday, October 24.
Most smartphones and computers will update automatically.
This will ensure everyone is on the correct time as the UK transitions back to GMT.
And for those of you who are counting the days until the clocks go forward again, you'll need to mark March 28, 2027, on your calendars.
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