The Belogradchik rebellion broke out in the Belogradchik nahiya, part of the Ottoman Empire, on 6 August 1836, and lasted for 4–5 days. [1] It was planned in Knjaževac (formerly Gurgusovac) in the Principality of Serbia and included participants from Serbia. [1] That year there were also rebellions in nearby Pirot and in Berkovitsa.