Isnt that also called St Vitus Day? (June 28th 1389 IIRC).
yes, it is, it is a nacional holliday, but also allmost prohibited by ruling liberals in Serbia.
Interesting fact is that Milosevic was extradicted to teh Hague on that very day 2001. That shorted a life of man who extradicted him, prime minister Djindjic (Democrat Party, members of Socialist internationale) assasinated in 2003.