Clocks go forward by one hour in 2025 for daylight saving time on the last Sunday of March:
- In the UK and most of Europe, clocks go forward at 1am on Sunday, March 30, 2025.
- In the United States, clocks go forward on Sunday, March 9, 2025, at 2am.
This change marks the start of British Summer Time (BST) in the UK and Daylight Saving Time (DST) in the US, resulting in longer daylight evenings. It is often remembered by the phrase "spring forward, fall back".