Clocksback

When do the clocks go back? The clocks go back today, the last Sunday in October. 25th October is the earliest possible date the clocks can go back, ushering in darker evenings at the earliest opportunity. When did the clocks go back? before 1916: they didn't 1916-1924: various dates in late Sept/early Oct 1925-1938: the day after the first Saturday in October 1939-1947: it's complicated (thanks to Double Summer Time) 1948-1949: the day after the last Saturday in October 1950-1952: the day after the third Saturday in October 1953-1960: the day after the first Saturday in October 1961-1967: the day after the third Saturday in October 1968-1970: they didn't (thanks to Double Summer Time) 1971-today: the last Sunday in October » For a full history of British Summer Time dates see my 2025 clocksback blogpost When do the clocks go back? At 2am BST, reverting to 1am GMT. It's been 2am ever since 1916. 2am on Sunday was chosen because it was the quietest time of the week, after trains had…