It was the day that the army of the Omi Imperial Court was heavily defeated in Seta, Omi Province, and the civil war ended with the suicide of Prince Otomo (Emperor Kobun) on the following day.
これは近江国の瀬田で近江朝廷の軍が大敗した日にあたり、翌日に大友皇子（弘文天皇）が自殺して内戦は終わった。