ArtsAutosBooksBusinessEducationEntertainmentFamilyFashionFoodGamesGenderHealthHolidaysHomeHubPagesPersonal FinancePetsPoliticsReligionSportsTechnologyTravel

The Oldest and Most Fascinating Clock in the World

Updated on July 1, 2020
Joey Dykes profile image

Joey is an undergrad at the University of Alabama studying History and Economics. He has many interests including the History of Science.

Prague Orlog or the Prague Astrological Clock was built in 1410 and is the world's oldest functioning clock in the world.

Its age is not the only thing however that makes it unique. The Prague Orlog also contains many different ways to calculate times, including a yearly calendar, a map of solar and lunar eclipses, as well as zodiac signs to match the calendar.

This clock also contains 12 statues of Jesus' apostles that rotate every hour on the hour. This mechanism is called the Walk of the Apostles.

Click thumbnail to view full-size

The Astronomical Dial

Like I said previously this clock measures a lot of different things. If you look at the picture below you can see many rings interconnected. The small ring in the center rotates every day and measures the Zodiac signs.

In the very center of this ring is the stationary background. Whatever is in the center of the ring tells you if it is occurring. Dawn, dusk, and twilight are a few of the many things covered on this astrological clock.

The Sun and Moon

The image of the sun on one of the hands of the clock measures more than just the local time. It also measures time in the ancient Czech time as well as tell you when the sun will rise and when the sun will set.

The moon image is a bit more complicated. The moon on the clock measures the lunar phases and the sculpture of the moon will adjust itself according to the actual lunar phase.

The moon symbol will also accurately depict lunar eclipses when the images of the moon and images of the sun meet.

Animated Statues

There are many statues that surround the clock face. The main four being the two that flank the clock on the left and the right.

Starting from the very left are depictions of Vanity, Greed, Death, and Lust.

Every hour the skeleton, or the figure of death, rings the bell in his hands and the other 3 depictions shake their head. This is to show how the sins do not want to meet there demise.

Above the calendar, the face is two windows. When the bell tolls and the hour strikes the windows open up the reveals statues of the 12 apostles of Jesus Christ.

Every hour two figures are shown and they rotate out throughout the day.

The 12 statues rotate in this order; James and Peter, Andrew and Matthias, Thaddeus and Philip, Thomas and Paul, John and Simon, Barnabas, and then Bartholomew.


Although the calendar face is not original, it was replaced in 1880, it is still an exact replica of the real thing. It worlds the same way too.

Each image represents a month in the 12 month calendar year with the days being written on the circle on the outer edge.

Every holiday is also permanently written within the dates. Each day also has a saint assigned to it.

Would you like to visit the Prague Orloj

See results

The Prague Astronomical Clock is the oldest and most complex and beautiful clock in the world. With all of its intricacies and little details, I am surprised that it isn't one of the greatest wonders of the world.

© 2020 Joey Dykes


This website uses cookies

As a user in the EEA, your approval is needed on a few things. To provide a better website experience, uses cookies (and other similar technologies) and may collect, process, and share personal data. Please choose which areas of our service you consent to our doing so.

For more information on managing or withdrawing consents and how we handle data, visit our Privacy Policy at:

Show Details
HubPages Device IDThis is used to identify particular browsers or devices when the access the service, and is used for security reasons.
LoginThis is necessary to sign in to the HubPages Service.
Google RecaptchaThis is used to prevent bots and spam. (Privacy Policy)
AkismetThis is used to detect comment spam. (Privacy Policy)
HubPages Google AnalyticsThis is used to provide data on traffic to our website, all personally identifyable data is anonymized. (Privacy Policy)
HubPages Traffic PixelThis is used to collect data on traffic to articles and other pages on our site. Unless you are signed in to a HubPages account, all personally identifiable information is anonymized.
Amazon Web ServicesThis is a cloud services platform that we used to host our service. (Privacy Policy)
CloudflareThis is a cloud CDN service that we use to efficiently deliver files required for our service to operate such as javascript, cascading style sheets, images, and videos. (Privacy Policy)
Google Hosted LibrariesJavascript software libraries such as jQuery are loaded at endpoints on the or domains, for performance and efficiency reasons. (Privacy Policy)
Google Custom SearchThis is feature allows you to search the site. (Privacy Policy)
Google MapsSome articles have Google Maps embedded in them. (Privacy Policy)
Google ChartsThis is used to display charts and graphs on articles and the author center. (Privacy Policy)
Google AdSense Host APIThis service allows you to sign up for or associate a Google AdSense account with HubPages, so that you can earn money from ads on your articles. No data is shared unless you engage with this feature. (Privacy Policy)
Google YouTubeSome articles have YouTube videos embedded in them. (Privacy Policy)
VimeoSome articles have Vimeo videos embedded in them. (Privacy Policy)
PaypalThis is used for a registered author who enrolls in the HubPages Earnings program and requests to be paid via PayPal. No data is shared with Paypal unless you engage with this feature. (Privacy Policy)
Facebook LoginYou can use this to streamline signing up for, or signing in to your Hubpages account. No data is shared with Facebook unless you engage with this feature. (Privacy Policy)
MavenThis supports the Maven widget and search functionality. (Privacy Policy)
Google AdSenseThis is an ad network. (Privacy Policy)
Google DoubleClickGoogle provides ad serving technology and runs an ad network. (Privacy Policy)
Index ExchangeThis is an ad network. (Privacy Policy)
SovrnThis is an ad network. (Privacy Policy)
Facebook AdsThis is an ad network. (Privacy Policy)
Amazon Unified Ad MarketplaceThis is an ad network. (Privacy Policy)
AppNexusThis is an ad network. (Privacy Policy)
OpenxThis is an ad network. (Privacy Policy)
Rubicon ProjectThis is an ad network. (Privacy Policy)
TripleLiftThis is an ad network. (Privacy Policy)
Say MediaWe partner with Say Media to deliver ad campaigns on our sites. (Privacy Policy)
Remarketing PixelsWe may use remarketing pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to advertise the HubPages Service to people that have visited our sites.
Conversion Tracking PixelsWe may use conversion tracking pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to identify when an advertisement has successfully resulted in the desired action, such as signing up for the HubPages Service or publishing an article on the HubPages Service.
Author Google AnalyticsThis is used to provide traffic data and reports to the authors of articles on the HubPages Service. (Privacy Policy)
ComscoreComScore is a media measurement and analytics company providing marketing data and analytics to enterprises, media and advertising agencies, and publishers. Non-consent will result in ComScore only processing obfuscated personal data. (Privacy Policy)
Amazon Tracking PixelSome articles display amazon products as part of the Amazon Affiliate program, this pixel provides traffic statistics for those products (Privacy Policy)
ClickscoThis is a data management platform studying reader behavior (Privacy Policy)