The following countries, parts of countries, and territories use Eastern European Time all year round:
The following countries, parts of countries, and territories use Eastern European Time during the winter only:
- Bulgaria, since 1894
- Cyprus; Northern Cyprus used Further-eastern European Time for a year in 2016-17 and then reverted
- Estonia, in years 1921–40 and since 1990
- Finland, since 1921
- Greece, since 1916
- Israel, since 1948 (see also Israel Standard Time)
- Latvia, in years 1926–40 and since 1990
- Lithuania, in 1920–40 and since 1990 with break 1998–1999
- Moldova, in years 1918–40, 1941–44 and since 1991
- Ukraine, in years 1922–30 and since 1990
The following countries, parts of countries, and territories used Eastern European Time in the past:
- Moscow used EET in years 1922–30 and 1991–92.
- Belarus, in years 1922–30 and 1990–2011
- In Poland this time was used in years 1918–22.
- In time of World War II, Germany implemented MET (CET) in east occupied territories.
- Republic of Crimea and Sevastopol used EET as part of Ukraine in years 1991-94 and 1996-2014
- Turkey, used EET in years 1910-1978 and re-used it again in years 1985-2016. Now uses year round DST timezone called Further-eastern European Time or Turkey Time (TRT).
Sometimes, due to its use on Microsoft Windows, FLE Standard Time (for Finland, Lithuania, Estonia, or sometimes Finland, Latvia, Estonia) or GTB Standard Time (for Greece, Turkey, Bulgaria) are used to refer to Eastern European Time.