Shraddh is one of the most significant time to remember our ancestors and pray for the departed souls to rest in peace. As per the Hindu calendar , during the time of Pitru Paksha, if you offer prayers and perform certain rituals for your ancestors, you will be blessed by them and their souls will rest in peace. Dwitiya Shraddha falls on the Vidiya thithi of Krishna Paksha of Bhadrapada month or the second day of the waning phase of the moon in the month of Bhadrapada as per the lunar calendar. According to north Indian Purnimant Calenders, Dwitiya Shraddha falls in the month of Ashwin.
In many places, Lord Vishnu is worshipped on this day. Lord Vishnu is the creator of the world and the mankind. It is considered auspicious to perform Pooja for the Lord Vishnu. Lord Vishnu blesses his devotees with a long and happy life and also helps to gain moksha or salvation in the after life.
Dwitiya Shraddha or Dooja Shraddha is the second day of the fifteen day long Mahalaya Paksha of the Bhadrapada Month. The whole fifteen days are considered auspicious for offering Tarpans to the deceased. People who have died on Vidiya Thithi as per the lunar calendar are offered Tarpan on Dwitiya Shraddha or Dooja Shraddha. Pinda Daan is also done and in the process of Pinda Daan, Pindas are either immersed in the river or given as food to the cow.
Care should be taken that the whole process of Shraddha ritual should conclude in such a manner that lunch should happen at Aparhana (after noon) time.