The constellation is determined by the date of the solar calendar. In 2009, the Gregorian calendar date was 65438 on the eighth day of the lunar calendar 10/65438+24, and the constellation of that day was Sagittarius.
Lunar calendar: the eighth day of October in the Year of the Ox
Stems and branches: ugliness and ugliness
Gregorian calendar: Sagittarius 20091Tuesday, October 24th 165438.
Source: Hua Wang.