site.btaToday's Observances: May 20
- National Day of Cameroon: Republic Day (1972).
On this date in Bulgarian history:
1878: In Plovdiv, Prince Alexander Dondukov-Korsakov takes office as Russian Imperial Commissioner in Bulgaria (until June 10, 1879).
1923: Military Maritime Museum opens in the seaside city of Varna, under the name of the Maritime Museum.
1992: Diplomatic relations established with Turkmenistan and Kyrgyzstan.
2006: Second World Meeting of Bulgarian Media takes place in Chicago, USA.
2007: First elections held for Bulgarian Members of the European Parliament.