Clock changes in Portugal
Clocks in Portugal go back one hour on Sunday, 25 October 2026: at 02:00 they read 01:00 again. The night is one hour longer — standard time returns.
The night of 25 October 2026
At 02:00 the clock turns back to 01:00, so the hour between them happens twice. Timestamps in that window are ambiguous without a UTC offset.
⟲ 01:00–02:00 · standard time returns
The next changes
4 of 4
- 25 10 02:00 → 01:00 · standard time returns Sunday
- 28 03 01:00 → 02:00 · summer time starts Sunday
- 31 10 02:00 → 01:00 · standard time returns Sunday
- 26 03 01:00 → 02:00 · summer time starts Sunday
Transitions are computed directly from the IANA time-zone database at build time, not from a hand-kept table — if the rules change, these dates change with the next daily build.
FAQ
When do the clocks change in Portugal?
Sunday, 25 October 2026, at 02:00 local time, when clocks go back one hour.
Why does the time difference to other countries wobble?
Countries change their clocks on different dates — Europe and North America are a week or more apart — so for a few weeks each spring and autumn the usual difference is temporarily an hour off. Every overlap and difference figure on this site reads the current offsets from the IANA time-zone database, so those weeks are handled automatically.