Constellations are determined by the date of the solar calendar. 1990 The Gregorian calendar date on February 7th of the lunar calendar is March 3rd, and the constellation of that day is Pisces.
Lunar calendar: the seventh day of February in the Year of the Horse.
Branch: Gengwu Wuyin Dingmao
Gregorian calendar:1Saturday, March 3, 990 Pisces.
Source: Hua Wang.