Constellations are determined by the date of the solar calendar. 1February 6, 998 The Gregorian calendar date is March 4, and the constellation of that day is Pisces.
Lunar calendar: the sixth day of February in Wuyin year.
Branch: Gengxu Wuyin Jiayin
Gregorian calendar:1Wednesday March 4th, 998, Pisces.
Source: Hua.com.