🇬🇧 London daylight saving time (DST)
When the clocks change in London, the local UTC offset and any conversions shift with it. Exact transition dates and times below.
Current offset: UTC+01:00 (GMT/BST)
This offset changes on the clock-change dates shown below.
2025 clock changes
| Date | Local change | Type | Offset |
|---|---|---|---|
| 2025-03-30 | 12:59 AM → forward 1h | Spring forward (DST starts) | UTC+00:00 → UTC+01:00 |
| 2025-10-26 | 1:59 AM → back 1h | Fall back (DST ends) | UTC+01:00 → UTC+00:00 |
2026 clock changes
| Date | Local change | Type | Offset |
|---|---|---|---|
| 2026-03-29 | 12:59 AM → forward 1h | Spring forward (DST starts) | UTC+00:00 → UTC+01:00 |
| 2026-10-25 | 1:59 AM → back 1h | Fall back (DST ends) | UTC+01:00 → UTC+00:00 |
2027 clock changes
| Date | Local change | Type | Offset |
|---|---|---|---|
| 2027-03-28 | 12:59 AM → forward 1h | Spring forward (DST starts) | UTC+00:00 → UTC+01:00 |
| 2027-10-31 | 1:59 AM → back 1h | Fall back (DST ends) | UTC+01:00 → UTC+00:00 |
FAQ
- Why does this matter for converting times?
- A correct timezone conversion must use the offset that applied on the target date. Around these transition dates, the same wall-clock time maps to different UTC instants — which is exactly what London's converter handles.
Other zones: New York, Los Angeles, Chicago, Denver, Paris.