This is an educational app that helps you understand the diurnal movement of the sun and the phase changes of the moon.
The observer's viewpoint can be changed to three viewpoints, helping to comprehensively understand the diurnal movement of celestial bodies and the appearance of the moon.
You can check information about solar months, lunar days, and moon phases within the app.
Additionally,
You can easily compare changes in constellations, changes in day and night length, and changes in solar altitude depending on the season.