How Often Does the Astronomical Clock Chime in Prague?

By Michael Ferguson

The Astronomical Clock in Prague is a fascinating medieval clock located in the Old Town Square. It is not only a popular tourist attraction but also an important historical and cultural symbol for the city.

The History of the Astronomical Clock

The Astronomical Clock, also known as the Prague Orloj, was first installed in 1410 by clockmaker Mikuláš of Kadaň and astronomer Jan Šindel. Over the centuries, it has undergone several renovations and additions, but it still retains its original charm and functionality.

How Does the Astronomical Clock Work?

The clock consists of several components that work together to display various astronomical and calendar-related information. The main part of the clock is a large astronomical dial that shows the positions of the sun and moon in relation to the zodiac signs.

Chiming Mechanism:

One of the most enchanting features of the Astronomical Clock is its chiming mechanism. Every hour, when the clock strikes, a procession of twelve apostles appears from two small windows above the astronomical dial.

The Chime Frequency:

The Astronomical Clock chimes every hour, just like any other traditional clock. However, what makes it truly unique is that it also chimes every quarter hour. At each quarter-hour mark, you can hear a short melody followed by a small golden rooster crowing.

The Chiming Sequence:

  • At each hour mark, all twelve apostles appear in procession while two windows open.
  • Afterward, they rotate back into hiding as one window closes.
  • At each quarter-hour mark, the golden rooster crows.
  • Finally, at the top of each hour, the full hourly chime sequence plays.

Experiencing the Astronomical Clock

Visiting Prague’s Astronomical Clock is an experience that should not be missed. Every hour, crowds gather in front of the clock to witness its fascinating display. The intricate design and attention to detail make it a masterpiece of medieval engineering.

Whether you are exploring Prague’s rich history or simply enjoying the city’s vibrant atmosphere, taking a moment to observe the Astronomical Clock in action is truly captivating.

In conclusion, the Astronomical Clock in Prague chimes every hour and every quarter hour. Its chiming mechanism and procession of apostles make it a unique and mesmerizing sight. Don’t forget to visit this splendid piece of history on your next trip to Prague!