Prague astronomical clock or Prague orloj belongs to the Prague’s five top sights. It stands for the medieval astronomical clock which was installed in 1410 and thus it was the third-oldest astronomical clock in the whole world and stays the oldest which operates.

Prague Astronomical clock Description

Prague astronomical clock is situated in the Old Town Square, on the southern wall of the Old Town Hall. It is made of three main parts: the astronomical dial (the position of the Sun and Moon in the sky), The Walk of the Apostles, a clockwork which shows the Apostles and a figure of Death, and the last one is a calendar dial with the medallions with the months of a year. There is a legend about suffering of Prague in case of neglecting the astronomical clock.

Brief history of Prague Astronomical clock

The oldest part of the astronomical clock is the mechanical clock and astronomical dial from 1410 which were made by clockmaker Mikuláš of Kadaň and Jan Šindel. In about 1490 the calendar dial was made with the façade decorated by gothic sculptures. However, it was said that the Orloj was made by a clockmaster Jan Růže (or Mistr Hanuš) in 1490 which was a historical mistake.


Heavy damage of Prague Astronomical clock in 1945

The Orloj was badly damaged in 1945 during the Prague Uprising by Germans. After damaging or wooden sculptures and the calendar dial which was made by Josef Mánes, the Orloj was repaired and started working in 1948 again.

The great celebration of the Orloj’s 600th anniversary

The anniversary was splendid as there was a light show on the face of the clock tower and two projectors were used for animation too. The video interacted with the tower’s architecture very gently showing famous animated people, different events of the Orloj’s history etc.