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During the development of the Planisphere tool I accidentally came across the picture of Prague astronomical clock. I realized it is actually a sort of the same. The day is displayed here instead of the nigth. Additionally, for reading the time value there are several other dials.

The absence of good looking simulator led me to the conclusion to reuse the same code base and try to mimic the clock with the highest fidelity possible and to allow to set any date or special events like solstices, equinoxes or core Moon phases. Similarly to Planisphere I wanted to offer to set the latitude.

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User Guide

The astronomical clock can be adjusted by the left control panel. The first group of controls allows you to set date and time, the second group determines the location and the last option switches the language of user interface.

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