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Central European Summer Time (CEST), sometime referred also as Central European Daylight Time (CEDT), is the standard clock time observed during the period of "summer daylight-saving in those European countries which observe "Central European Time ("UTC+1) during the other part of the year. It corresponds to "UTC+2, which makes it the same as "Central Africa Time, "South African Standard Time and "Kaliningrad Time in "Russia.
Other names which have been applied to Central European Summer Time are Middle European Summer Time (MEST), Central European Daylight Saving Time (CEDT), and Bravo Time (after the second letter of the "NATO phonetic alphabet). It is also in practice called "CET, for example in invitations to events during the summer.
Since 1996 European Summer Time has been observed between 1:00 UTC (2:00 CET and 3:00 CEST) on the last Sunday of March and 1:00 UTC on the last Sunday of October; previously the rules were not uniform across the European Union.
The following countries and territories use Central European Summer Time.
CEST was used also in the years 1993–1995 in "Portugal, 1998–1999 in "Lithuania and 2005–2008 in "Tunisia. In addition, "Libya used CEST during the years 1951–1959, 1982–1989, 1996–1997 and 2012–2013.