In September 741, the areas for Sakyo (Left Capital) and Ukyo (Right Capital) were designated, and in November of the same year, the official name 'Yamato no kuni no omiya' was decided upon and the Palace was built.
741年の9月に左京右京が定められ、11月には大養徳恭仁大宮という正式名称が決定され、宮殿が造られた。