Constellations are determined by the date of the solar calendar. The solar calendar date of 20 13 Winter Moon 19 is 65438+February 2 1, and the constellation of that day is Sagittarius.
Lunar calendar: 19 13 years1February 19 days.
Main branch: Xin You, the fourth son of Jia Gui.
Gregorian calendar: 20 13 12 2 1 Saturday Sagittarius
Source: Hua.com.