site.btaObservances: August 28

On this date in Bulgarian history:

1943: The underage Prince Simeon of Tarnovo is proclaimed King of Bulgaria following the death of his father, King Boris III, the same day.

2008: The Montana and Burgas regional centres of the National Emergency Call Centre 112 open.

Bulgaria:

- Day of the 13 Immortal Bulgarians. The list includes King Boris III, unifier; Khan Asparouh, founder of the Bulgarian state; Prince Boris I, Christianizer; King Simeon, enlightener; St Kliment Ohridski, inventor of the Cyrillic alphabet; St John of Rila, patron saint of the Bulgarians; Patriarch Euthimius, mystic and warrior; Father Paissii, awakener; Vassil Levski, icon of liberty; Baba Tonka, fearless mother; Prince Alexander of Battenberg, unifier; Pencho Slaveikov, genius of insightfulness; and Vanche Mihailov, champion of affronted Bulgarians.