The planetarium clock from 1770, Paris

This beautiful art piece is called Pendulette de table avec Planetarium (Planetarium Table Clock). The planetarium clock pictured below is an absolute work of art made in 1770 in Paris. It keeps time, the earth rotates around the sun in perfect real time. The other five planets rotate as well(see: The timeline of discovery of Solar System planets and their natural satellites), up, down, around, in relation to the etched constellations of precisely positioned stars on the crystal globe, which if you are smart enough will reveal what season it is.

The planetarium clock can be found at the Beyer Museum of Time(Bahnhofstrasse 31, Zurich 8001, Switzerland). The Uhrenmuseum Beyer (Beyer Watch and Clock Museum) is located in the heart of the city of Zürich, Switzerland and is one of the world’s leading private museums dedicated to the horology.
The Beyer Watch and Clock Museum contains chronological instruments dating from 1400 BC right up to the present day: shadow sticks, sundials, oil clocks, hourglasses, water clocks, grandfather clocks, table clocks, pocket watches, wristwatches, and scientific and navigation chronometers.