Central European Time (CET) is a standard time which is 1 hour ahead of Coordinated Universal Time (UTC). The time offset from UTC can be written as UTC+01:00.It is used in most parts of Europe and in a few North African countries.
Libya, since 27 October 2013; switched from Central European Time, which was used in 2012. Used year-round EET from 1980–1981, 1990–1996 and 1998–2012. The following countries, parts of countries, and territories use Eastern European Time during the winter only: Bulgaria, since 1894, except between 1942 and 1945
The United Kingdom left the European Union on the 31 of January 2020 at 23:00 (Greenwich Mean Time). Following the UK left from the European Union on January 31 , the transition period expired on December 31, 2020 and ended on January 1, 2021.