Clocks across the UK will turn back one hour this weekend.
The change takes place at 2am on Sunday, October 25, when clocks go back across the country.
Moving the hands back gives an extra hour in bed for a Sunday lie-in.
It also provides an hour of sunlight as November approaches and days shorten.
Which devices update automatically?
People will not need to alter timepieces by hand in most cases.
Devices connected to the internet update automatically, including smartphones, laptops, tablets and televisions.
Alarm clocks, car radios and equipment not connected to the internet will require manual adjustment.
Why do the clocks change?
The purpose of the system is to make use of daylight.
Germany introduced the first clock change in 1916 during the First World War to save energy.
Less electricity was needed when daylight lasted longer.
Britain and European governments followed, which began British Summer Time.
The system has remained in place in the UK since 1971.
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