Constellations are determined by the date of the solar calendar. 1983 The Gregorian calendar date on the third day of the first lunar month is 15 February, and the constellation of that day is Aquarius.
Lunar calendar: the third day of the first month in 83.
Main branch: Gui Haijia Yin Jiaxu.
Gregorian calendar: February 1983, Tuesday, Aquarius.
Source: Hua.com.