Bulgaria in 1230.
The official date on which we celebrate the day of Veliko Tarnovo is March, 22nd. The date is related to the victory of Tsar Ivan Asen II over the ruler of the Despotate of Epirus, Theodore Komnenos Doukas, in the battle of Klokotnitsa (near the nowadays town of Haskovo). The battle in which the Bulgarian tsar defeated and captured Theodore Komnenos took place on the 22 March 1230.