The Prague Astronomical Clock, also known as the Orloj, is a medieval clock located in the Old Town Square of Prague, Czech Republic. It is not just a regular clock but also an astronomical instrument that displays various astronomical positions and information.
The clock is one of the most famous tourist attractions in Prague and has been fascinating people for centuries. In this article, we’ll learn how to read the Prague Astronomical Clock and explore its various features.
The History of the Prague Astronomical Clock
The Prague Astronomical Clock was first installed in 1410 by clockmaker Mikuláš of Kadaň and astronomer Jan Šindel. Since then, it has undergone several modifications and restorations over the centuries. The clock is made up of three main components – the astronomical dial, the calendar dial, and the procession of apostles.
The Astronomical Dial
The astronomical dial is at the center of the clock face and displays various astronomical information such as star time, sunrise and sunset times, zodiac signs, and phases of the moon. The outer ring shows 24-hour time with Roman numerals while the inner ring displays Central European Time with Arabic numerals.
How to Read: To read the astronomical dial, first locate your current position on Earth’s surface on one of the two halves of the ring that represent day or night. Then look for where this intersects with either a zodiac symbol or a blue or yellow line marking hours from 1-12 in Roman numerals – this will give you an approximate time.
The Calendar Dial
The calendar dial is located below the astronomical dial and shows months, days, and feast days celebrated by Czech saints. The outer ring displays 12 medallions representing each month while inside it there are two concentric circles – the larger one shows the date and the smaller one shows the position of the sun in the zodiac.
How to Read: To read the calendar dial, first locate the current month on the outer ring. Then look for where this intersects with a golden hand pointing towards a number on the inner circle – this will give you the date.
The Procession of Apostles
The procession of apostles is a show that occurs every hour on the hour. The two small trap doors above the astronomical dial open, and twelve apostles appear in procession across a balcony above. The statues move while a skeleton figure representing death rings a bell.
How to Read: The procession of apostles is not something to read, but rather something to watch and enjoy. Be sure to arrive at least 5-10 minutes before each hour so that you can get a good view of this impressive display.
Closing Thoughts
The Prague Astronomical Clock is an impressive piece of engineering and art that has stood the test of time. It is not just a clock but also an astronomical instrument and cultural symbol that represents Prague’s rich history and heritage. We hope this article has helped you understand how to read this fascinating clock, and we encourage you to visit it in person when you get a chance!
- Location: Old Town Square, Prague, Czech Republic
- Admission: Free
- Showtimes: Every hour on the hour from 9 am to 11 pm