This year in the UK, the clocks are set to go back one hour at 2am on October 31st. This is six days later than it was in 2020, where the clocks went back on October 25th.
It is a much easier date to remember this year, as it coincides with Halloween.
As such, the morning of October 31st should be somewhat brighter (in theory). As well as this, sunrise and sunset will take place one hour earlier than normal.
Next year, in 2022, the clocks will go back one hour during the early hours of October 30th. However, this is currently subject to change, due to the nature of how it is decided.
A YouGov poll in 2015 showed that 40% of people in the UK would rather this practice be scrapped, while a lesser 33% were in favour of keeping it.