Futananoka (a memorial service on the 14th day after the death), Minanoka (a memorial service on the 21st day after the death), Shinanoka (a memorial service on the 28th day after the death) and Munanoka (a memorial service on the 42nd day after the death) can be held in front of a family alter with only relatives' attendance, though it is preferable to invite a monk.
ニ七日・三七日・四七日・六七日は、僧侶を招くのが一番よいが、親族のみお内佛の前で、お勤めをしても良い。