Among Buddhist memorial services to be held during the chuin period, a memorial service of Nanananoka (also referred as Jinshichinichi or Shijukunichi) is generally held at a family temple or in front of a family Buddhist alter at home and deemed as the most important one.
一般に中陰中の法要の重軽としては、七七日（尽七日・四十九日）法要は、所属寺・自宅のお内佛にて行い、最も重いとされる。