On each day of the dark fortnight (Pitra Paksha), special offerings are made to the ancestors whose lunar date (Tithi) of death corresponds to that particular day. Favourite food items of the departed person are specially prepared and offered after performing a puja .
One must offer food to Brahmin and donate Yatha Shakti. A small portion of the food is also offered to the Cow (Gow Grass) before offering it to Brahmin..
A small portion of the food is also offered to the crow who is considered as a connection between the world of the living and the world of the dead. Round balls of rice and flour, called pinda , are also offered, along with the sacred kusha grass and flowers, amidst sprinkling of water and chanting of mantras from the Sam Veda.
Shraddh Tithi – Pitra Paksha Calendar
Thu, 19 Sep to Fri, 4 Oct 2013
Purnima (Full Moon) ka shraddha: Thu, 19 Sep
Ekam (Pratipada) ka shraddha: Fri, 20 Sep
Dyitia ka Shraddh: Sat, 21 Sep
Tritiya ka Shraddha: 21 Sep & 22 Sep (until 14.15 hrs)
Chaturthi ka shraddh: Mon, 23 Sep
Panchami ka shraddh: Tue, 24 Sep
Shasthi ka shraddh: Wed, 25 Sep
Saptami ka shraddh: Thu, 26 Sep
Ashtami ka shraddh: Fri, 27 Sep (Jivitputrika Vrat)
Navami ka shraddh: Sat, 28 Sep
Dashmi ka shraddha: Sun, 29 Sep
Ekadasi ka shraddh: Mon, 30 Sep
Dwadashi ka shraddh: Tue, 1 Oct
Tryodashi ka shraddh: Wed, 2 Oct
Chaturdashi ka shraddh (only when death due to accident, murder, by poisons etc): Thu, 3 Oct
Chaturdashi (Normal Death) / Amavasya ka shraddh: Fri, 4 Oct
Note : 1) Sarvpitru Sharaddh on Fri, 4 October 2013
2) Chaturdashi’s shraddha should observe on Amavas Day, unless some one died in accident/war.
If possible consult your pundits/purohit to perform this ceremony of departed souls.