You can check the nine stars and their auspicious and unfavorable directions based on nine star pneumatology.

Models that support a compass can rotate the positioning plate in a specified direction.

There are many schools of Nine Star Ki, but this app uses one that switches between yin and seclusion around the summer solstice and winter solstice.

Regarding auspicious directions, we target "Aioi" and "Hiwa".
The bad direction corresponds to the following.
・Gokosatsu/Anskensatsu
・Favorite killing/favorite killing or monthly killing/monthly killing
・Toshiba/Tsukiba