The purpose of the ceremony of reporting to the Three Shrines in the Imperial Court of the Imperial Ancestor's Shrine, is to report the enthronement of the new Emperor to the Imperial Ancestor's Shrine where successive Emperors were enthroned, or the Shrine where the gods of heaven and earth are enthroned.
宮中三殿皇霊殿宮中三殿神殿に奉告の儀とは、先祖代々の皇霊を奉る皇霊殿、及び天神地祇を奉る神殿において、新天皇の即位を奉告する儀式である。