also: ごしちにちのみずほう
noun
annual Shingon prayer ritual (Jan 8-14)
A specific esoteric Buddhist ritual held at the imperial palace from January 8th to 14th, historically performed by Shingon monks for the protection of the nation and the emperor.
後七日の御修法は、真言宗の重要な儀式の一つです。
The Goshichinichi no Mishihō is one of the important rituals of the Shingon sect.
The name literally means 'the imperial ritual of the latter seven days,' referring to the second week of the New Year. The reading みしほ is a traditional Buddhist term for an esoteric rite.