This spherical sundial is equipped with an extraordinary timekeeping mechanism. The rotating shadow indicator allows you to observe a variety of fascinating solar phenomena when the sun is shining.

To determine the current time, the rotating, double-walled shadow indicator is carefully aligned with the sun. When precisely aligned, a shadow with a narrow slit of light in the center is cast on the dial. This light slit indicates the exact time. The upper row of numbers shows Central European Standard Time (CET), while the lower row shows Central European Summer Time (CEST).

The names of important world cities are engraved on the top of the globe of the sundial. Once the time is set as described, the position of the shadow indicator also shows the name of the city where it is currently noon. In the city 180 degrees opposite, it is midnight.

This sundial offers additional remarkable features, such as determining twilight times using the swiveling shadow indicator. The explanation of this function and the use of the attached equation of time table, as well as the North and South Pole plate with the 66th latitude, can best be understood during a guided sundial tour. You can book a tour directly using the function buttons in this app.