According to "Shoku-Nihongi" (the second in a series of chronicles about Japan), the ceremony in which Emperor Shomu received "Choga" (greetings of the New Year) in 725 and the ritual which Emperor Kanmu held in Katano County, Kawachi Province on the winter solstice in 785 correspond to this.
『続日本紀』によると725年に聖武天皇が朝賀を受ける礼や、785年の冬至に桓武天皇が河内郡交野郡で執り行った儀式などがこれに当たると言われている。