Constellations are determined by the date of the solar calendar. 1 The Gregorian calendar date on July 26th, 994 is1September, and the constellation of that day is Virgo.
Lunar calendar: July 26th.
Branch: Jia Shen Geng Yin
Gregorian calendar: 1 September, 9941Thursday Virgo
Source: Hua.com.