The interregnum period occurred for the first time in four hundred and sixty two years, the last recorded interregnum period was fifty seven days from the era between Emperor Shotoku and Emperor Konin in 708, after that it did not occur again for a hundred eighty six years until 1428 when there was another interregnum period for seven days between the era of Emperor Shoko and Emperor Gohanazono. (Excluding Northern Court)
天皇空位は称徳天皇から光仁天皇に至る神護景雲4年（780年）の57日間以来462年ぶりで、以後は称光天皇から後花園天皇に至る正長元年（1428年）の7日間まで186年間起こらなかった（北朝を除く）。