Astrology infers bright and dark moons.

..... In astrology, the moon looks at the phase of the constellation, and I have never heard of any bright and dark moon! In astronomy, there is only the saying that new remnants are entangled up and down.

Besides, if you really want to calculate, wouldn't it be nice to look at the monthly calendar? The lunar calendar in China is the lunar calendar. Don't you think it's too far around astrology?

The date you said is the sixth day of the sixth lunar month, which should be between "going to the waning moon" and "the first quarter moon".

According to your fucking "bright and dark month", it is called "bright" month. ...