Prague astronomical clock

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Prague astronomical clock
Czech: Pražský orloj
Prague astronomical clock Location in Prague
Location	Prague 1, Czech Republic
Coordinates	50°05′13.23″N 14°25′15.30″E / 50.0870083°N 14.4209167°E / 50.0870083; 14.4209167
Website	www.prague.eu/en/object/places/3129/astronomical-clock

The Prague astronomical clock or Prague Orloj (Czech: Pražský orloj [praʃskiː orloj]) is a medieval astronomical clock attached to the Old Town Hall in Prague, the capital of the Czech Republic.

The clock was first installed in 1410, making it the third-oldest astronomical clock in the world and the oldest clock still in operation.^[1][2]