Family festival - Kasai

...The relationship between large and small families is most clearly expressed in the aspect of ancestor worship services, which are conducted according to Confucian customs. There are two types of ancestor worship services: family and grave services, which are further divided into memorial services (kijesa) and tea rites (ch'arye). Memorial services are held on the anniversary of the death of each ancestor within the fourth generation, and tea rites are held on New Year's Day or Chuseok (the 15th day of the eighth lunar month) for all ancestors who are the subject of memorial services.

*Some of the terminology that refers to "Kamatsuri" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…　大小家関係が最も明らかに表れるのは，儒式にのっとって行われる祖先祭祀の面である。祖先祭祀には家祭と墓祭の2種類があり，家祭はさらに忌祭祀(キジェサkijesa)と茶礼(チャリェch’arye)に分かれる。忌祭祀は4世代以内の各祖先の命日に，また茶礼は忌祭祀の対象となるすべての祖先に対して正月や秋夕(陰暦8月15日。…

※「家祭」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報