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Overview of Tvarditsa
Location of Tvarditsa, Bulgaria

Coordinates: 42°42′N 25°54′E / 42.700°N 25.900°E / 42.700; 25.900

Country Bulgaria
 • Mayor Katya Doycheva
Elevation 396 m (1,299 ft)
Population (2009-12-31)[1]
 • Total 5,669
Time zone EET (UTC+2)
 • Summer (DST) EEST (UTC+3)
Postal Code 8890
Area code(s) 0454
License plate CH

Tvarditsa (Bulgarian: Твърдица) is a town in Sliven Province, Southeastern Bulgaria. It is the administrative centre of the homonymous Tvarditsa Municipality. As of December 2009, the town has a population of 5,669 inhabitants.[1]

Tvarditsa is located on the southern slopes of Stara Planina. The area around is known as the Tvarditsa Coal Basin, the only place in the country where soft coal is mined.

Tvarditsa Rocks in the South Shetland Islands, Antarctica are named after Tvarditsa.[2] The Bessarabian Bulgarian village of Tvardiţa in Taraclia District, Moldova, was founded by refugees from Tvardisa, who named it after their ancestral town.[3]



Coordinates: 42°42′N 25°54′E / 42.700°N 25.900°E / 42.700; 25.900

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