In Andorra, the standard time is Central European Time (CET; ). Daylight saving time is observed from the last Sunday in March (02:00 CET) to the last Sunday in October (03:00 CEST). Andorra adopted CET after WWII.
Andorra uses the 24-hour clock.
In the IANA time zone database, Andorra is given the zone Europe/Andorra.