site.btaToday's Observances: May 30
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![Today's Observances: May 30](/upload/42601/%D0%B8%D0%B7%D1%82%D0%B5%D0%B3%D0%BB%D0%B5%D0%BD+%D1%84%D0%B0%D0%B9%D0%BB+%284%29.jpg?l=1000&original=)
The world:
World Challenge Day.
On this date in Bulgarian history:
1924: Foundation stone laid for St Kliment Ohridski University of Sofia. Construction completed in 1934.
1975: House of Soviet Science and Culture inaugurated in Sofia (renamed
/YV/
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