Later, in August or September 733, Emperor Shomu ordered the Daizenshiki (Office of the Palace Table) to offer a memorial service on urabon, and after that, the service, called urabone-kuyo or urabone-ku (both meaning a memorial service on urabon), was offered on July 14 (in the old calendar) every year as a regular Buddhist event in the imperial court.
後に聖武天皇の天平5年7月（733年）には、大膳職に盂蘭盆供養させ、それ以後は宮中の恒例の仏事となって毎年7月14日(旧暦)に開催し、孟蘭盆供養、盂蘭盆供とよんだ。