Prague's 600 Year Old Astronomical Clock

The Prague clock had its 600th anniversay in 2010. Prague's Astronomical Clock has windows at the top showing the apostles. It also has an Astronomical Dial, which is the oldest part, and the Calendar Dial underneath with various sculptures around.

 There is a presentation of statues of the Apostles at the doorways above the clock, with all twelve presented every hour. There are four figures flanking the clock that are set in motion at the hour, these represent four things that were despised at the time of the clock's making. There is Vanity, represented by a figure admiring himself in a mirror. Next, the miser holding a bag of gold represents greed. Across the clock stands Death, a skeleton that strikes the time upon the hour. Finally, the Turk tells pleasure and entertainment.. The other statues, that don´t move, are an Astronomer, a Chronicler, a Philosopher and an Angel. When the apostles finish their journey, the golden cockerel at the top crows and quivers its wings, the bell rings and the clock chimes the hour.

The Astronomical Dial shows the medieval perception of the Universe with the Earth as the center. The blue part of the dial represents the sky above the horizon, the brown part the sky below it. There are Latin words rpresenting east and west written above the horizon, and dawn and twilight below. There is a Zodiac ring. The two clock hands have the signs of the Sun and the Moon.
There are three circles on the dial, showing different times: the outer circle with Schwabacher numerals shows the Old Czech Time, the circle with Roman numbers shows the Central European Time and the inner circle with Arabic numerals shows the “Babylonian Time”. The length of an hour differs there according to the season – it is longer in the summer, shorter in the winter. The Prague Astronomical Clock is the only one in the world able to measure it.






The newest part of the clock is the Calendar Dial. There is the Prague Old Town symbol in the centre. The rotary outer circle describes every single day of the year, and the current date is indicated at the top. There are also medallions with zodiac signs and with pictures depicting every month.

Prague's clock is a popular tourist attraction, so if you find your way there, you should visit it at the Old Town City Hall.