British Summertime Begins 2025

British Summertime Begins 2025. British summer time (bst) twice a year, (the last sunday in march and the last sunday in october) the clocks change. British summer time (bst) occurs on the last sunday of march and represents the phenomenon when the clocks go forward in spring by one hour and, in autumn, on the last sunday of october, reverts to greenwich mean time.

At 1am on the last sunday in march, clocks ‘spring forward’ by one hour. The clocks change on the last sunday of march every year in the uk, moving forward by one hour.