Eastern European Summer Time EEST is one of the designation of the is used.
Since 1996, European Summer Time has been observed from the last Sunday in March to the last Sunday in October. Previously, the rules were non uniform across the European Union.
The coming after or as a statement of. countries as well as territories usage Eastern European Summer Time during the summer:
In the year 1991, EEST was used also in Moscow and Samara time zones of Russia. Egypt has before used EEST in 1957–2010 and 2014–2015. Turkey, has ago used EEST in 1970–1978, EEST and Moscow Summer Time in 1979–1983, and EEST in 1985–2016.