Avidhava Navami sharaddh is a ritual performed on Navami during Pitru Paksha or Mahalaya Paksha. In 2017, Avidhva Navami shraddh date is September 14.
This shraddh karma is dedicated to women ancestors. Women who passed away before their husband are offered tithi or tharpan during Avidhva Navami.
Avidhva Navami is observe on Ashwin Krishna paksha Navami as per North Indian calendar and as per Andhra Pradesh, Karnataka, Maharashtra and Gujarat calendars, Avidhva Navami falls on Bhadrapada Krishna Paksha navami.
On this day, five Brahmins are fed with delicious food and offered clothes and money. At least a Brahmin and a Suhasini (married women) are offered food on Avidhva Navami. If any one misses to perform shraddh rituals on Avidhva Navami, rituals women are to be performed on Mahalaya Amavasya.