Vidovdan (Serbian: Видовдан) is a religious holiday, St. Vitus' Day, whose feast is on June 15. Where the Eastern Orthodox Church still uses the Julian Calendar, as in Serbia, that date coincides, in the 20th and 21st centuries, with June 28 in the Gregorian Calendar. In Bulgaria it is called Vidovden (Видовден) or Vidov Den (Видов ден) and is particularly well-known in the western part of the country.
Vidovdan has long been considered a date of special importance to ethnic Serbs and the Balkans, the following events each took place on Vidovdan, but are expressed here in the Gregorian Calendar:
on June 28, 1948, the Cominform published, on the initiative of its Soviet delegates Zhdanov, Malenkov and Suslov, in a "Resolution on the State of the Communist Party of Yugoslavia" their condemnation of the Yugoslavian communist leaders - this happening is seen as the date that marks the final split between the Soviet Union and Yugoslavia.
