The changeover to winter time will take place during the night of Saturday October 28 to Sunday October 29, 2023, at 3 a.m. You will then have to set your watch back one hour and it will then be 2 a.m. The time change was introduced in France following the oil crisis of 1973-1974. Since 1998, time change dates have been harmonized within the European Union. In all member countries, the switch to winter time takes place on the last Sunday in October and the switch to summer time, the last Sunday in March.