《明史·志·卷二十五》
旧的制度，上旬丁日在学校祭祀孔子，第二天即上旬戊日祭祀社稷。
旧制，上丁释奠孔子，次日上戊祀社稷。
In the old system, Confucius was worshipped in the school on the Ding day of the first ten days, and the land and grain were worshipped on the next day, the Wu day of the first ten days.