The high-fidelity Prague Orloj simulator

Become familiar with Orloj

Determining the actual time can be challenging. To become familiar with all the features please visit orloj.eu with many useful resources.

Emulate look for your place

The construction of core dials depends on geographical latitude. It is configurable in this tool so you can emulate the appearance in other places.

Inspect astronomical events

There are several preset dates to demonstrate various astronomical events. You can for example inspect sun position at season transitions.