Clocks go forward one hour ‘tonight’.
At 1:00am GMT tomorrow morning (‘tonight’), clocks across Europe move forward one hour for Daylight Saving, to become 2:00am BST. It marks the annual start of British Summertime (BST), seeing us through until 27 October. It effectively means that there will be no 1:30am tomorrow – at 1:00am, we jump to 2:00am.