Constellations are determined by the date of the solar calendar. Lunar calendar1August 2, 9951day has a solar calendar date of1September 5, and the constellation of that day is Virgo.
Lunar calendar: August 21st, year B.
Branches and branches: one sea and one season.
Gregorian calendar:1September, 99515th Friday Virgo
Source: Hua.com.