Study on the Period of the Use of Datong-li in Korea
It has been generally known that Datong-li (a Chinese calendar in the Ming dynasty) was first introduced into Korea in the nineteenth reign BAG of King Gongmin (1370) of the Goryeo dynasty and lasted to the third reign of King Hyeojong (1652) of the Joseon dynasty.This understanding is based on the records of Goryeo-sa (History of the Goryeo dynast