Constellations are determined by the date of the solar calendar. 1986 July Gregorian calendar date is August 22nd, and the constellation of that day is Virgo.
Lunar calendar: July 17 in the third year.
Branch: Bing Yin and Bing Shen's Reform Movement of 1898
Gregorian calendar:1Friday, August 22nd, 986 Virgo.
Source: Hua Wang.