Eastern European Summer Time (EEST) is one of the names of the UTC+03:00 time zone, which is 3 hours ahead of Coordinated Universal Time. It is used as a summer daylight saving time in some European and Middle Eastern countries, which makes it the same as Arabia Standard Time, East Africa Time, and Moscow Time. During the winter periods, Eastern European Time (UTC+02:00) is used. Since 1996, European Summer Time has been applied from the last Sunday in March to the last Sunday in October. Previously, the rules were not uniform across the European Union.

Usage

The following countries and territories use Eastern European Summer Time during the summer: In 1991, EEST was used also in Moscow and Samara time zones of Russia. Egypt has previously used EEST in 1957–2010 and 2014–2015. Turkey, has previously used EEST in 1970–1978, EEST and Moscow Summer Time in 1979–1983, and EEST in 1985–2016. From 27 October 2024, Ukraine will use permanent Kyiv Time (UTC+2) year-round.