– International Francophonie Day (since 1988);- National day of Tunisia: Independence Day (1956);- Earth Day (since 1971);- World Social Work Day;- International Happiness Day (since 2013).
On this date in Bulgarian history:
1914: First sitting of the 17th National Assembly following the February 23 early parliamentary elections. The number of MPs is increased from 204 to 245.
1953: The opera in Plovdiv is unveiled. First performance given on November 15, 1953.
1995: Bulgaria signs a protocol establishing diplomatic relations with Saudi Arabia.
2008: Bulgaria recognizes Kosovo’s independence.