Constellations are determined by the date of the solar calendar. 1998 The Gregorian calendar date of the ninth day of the sixth lunar month is July 3 1, and the constellation of that day is Leo.
Lunar calendar:1June 9, 998
Zhizhi: Five tones are not dead.
Gregorian calendar: 1998 July 3 1 Friday Leo
Source: Hua.com.