Proper noun
Ashtami
(Hinduism) The eighth day (tithi) in the fortnight (paksha) of the Hindu lunar calendar.
Ashtami 2020 Wishes Images, Photos, Quotes, Status: The eighth day of the nine-days of Navratri celebrations is popularly known as Durga Ashtami. Source: Internet
In this case, Ashtami and Navami puja, including fasting are done on the same day. Source: Internet