site.btaObservances: September 21

The world:

- International Day of Peace. Established by a UN General Assembly resolution in 2001;

- National Day of Armenia. Independence Day (1991);

- National Day of Malta. Independence Day (1964);

- National Day of Belize. Independence Day (1981);

- World Alzheimer's Day.

On this date in Bulgarian history:

1378: Tsar Ivan Shishman issues an endowment diploma (the so-called chrysovul), which grants royal status to the Rila Monastery, and entrusts to it 19 villages, meadows, forests. The diploma, first published in 1845, confirms the boundaries of the monastery estates and grants privileges to the monastery. 

1933: Leipzig trial against Georgi Dimitrov, Vassil Tanev and Blagoi Popov begins. They are charged with setting fire to the Reichstag on February 27. Acquitted due to insufficient evidence on December 23.

1998: Bulgaria signs European Social Charter in Strasbourg.