Logo PTB
Panoramic view of the clock hall at PTB with the four caesium clocks CS1, CS2, CSF1 and CSF2.

When does Summer Time in Germany begin and end?

The Central European Summer Time (CEST) begins on the last Sunday in March, at 2 o'clock Central European Time. In 2004, this date was March 28. On this day at 2 o'clock, clocks will be set forward one hour, to 3 o'clock. The better use of daylight hours has been the aim of the introduction of Summer Time (also called Daylight Savings Time).

The Central European Summer Time (CEST) always ends on the last Sunday in October, at 3 o'clock Central European Summer Time. On this day, the time will be rolled back one hour, from 3 o'clock to 2 o'clock. This hour therefore appears twice, and for identification purposes the first one is referred to as 2A and the second one as 2B.

In the signal generation equipment, the change of time is programmed beforehand. Here a view on old equipment, with the date for introducing daylight saving time in 2010.