Aṣṭakā (English spelling) Astaka

...The aforementioned Bali offering to the snake also ends with this festival. Three Aṣṭakās are also held in the winter and cold season. This festival is held on the day of the waning quarter moon, and at least one is a grand festival in which a cow is sacrificed, and it has a strong New Year's festival flavor in honor of the "year-old wife."

*Some of the terminology explanations that mention "Aṣṭakā" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…先述の蛇へのバリ供もこの祭りをもって終了する。冬･寒季にはまた3回のアシュタカーAṣṭakāが行われる。この祭りは下弦の半月の日に行われ，少なくとも1回は牛を犠牲にする大祭で，〈歳の妻〉を祭る新年祭の色彩が強い。…

※「Aṣṭakā」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