site.btaObservances: February 13

On this date in Bulgarian history:

1954: Diplomatic relations with Hungary are upgraded to embassy level (established on August 9, 1920, at legation level).

1998: Bulgarian National Bank releases coin commemorating centenary of Bulgarian News Agency (BTA).

2003: Council of Ministers designates March 10 as Holocaust Day, marking anniversary of halting deportation of first groups of Bulgarian Jews to Nazi death camps in 1943.    

2004: Bulgarian-owned, Cambodian-flagged ship "Hera" sinks in Turkiye 's inland Sea of Marmara. All 21 crew members (17 Bulgarians and 2 Ukrainians) perish.