Overview
- The UK moves to British Summer Time at 1am on Sunday, March 29, with clocks advancing by one hour.
- Sunset times are projected to lengthen quickly after the change, reaching about 8:30pm by mid-April and around 9pm in many places by late April or early May.
- Roughly 60 evenings at or after 9pm are expected in 2026, with the late‑sunset stretch running from late May to mid‑to‑late July and lingering into early August in far northern areas.
- Example 8pm milestones are forecast for Edinburgh around April 6, Cardiff April 10, Birmingham April 12 and London April 17.
- The UK returns to GMT at 2am on the last Sunday in October, continuing a daylight‑saving practice dating to 1916 and observed in about 70 countries.