In the early hours of Sunday (27 October), in mainland Portugal and the Autonomous Region of Madeira, it is at 02:00 the clocks must be turned back 60 minutes, going to 01:00.

In the Autonomous Region of the Azores, the change will be made at 01:00 on Sunday morning, moving to 00:00.

The legal time will then change again on 30 March, 2025, to the summer regime.

The current time change regime is regulated by a directive (community law) from 2000, which provides that every year clocks are, respectively, moved forward and backward by one hour on the last Sunday in March and the last Sunday in October , marking the beginning and end of daylight saving time.