The term 'Sokui (enthronement)' applied to the consecuutive lineage of emperors up to Emperor Showa is understood as equivalent to 'Sokui-no-rei (ceremony of the enthronement)' specified in the current Imperial House Act.
昭和天皇までの「即位」は、現行皇室典範の「即位の礼」に当たるものと解される。