In Hinduism, Shradh is the rituals performed by relatives for the departed souls of dead ancestors, parents and relatives. Shradh Dates in 2013 as per Hindu calendar followed in India is from September 19 and ends on October 4
Pitru Paksha is a 15 lunar day’s period when Hindus pay homage to their ancestors, especially through food offerings.
According to South Indian Amavasyant calendar it falls in the lunar month of Bhadrapada beginning with the full moon day or day after full moon day. According to North Indian Purnimant calendar this period falls in the lunar month of Ashwin beginning with the full moon day in Bhadrapada or next day of full moon day.
It is just nomenclature of lunar months which differs and both North Indians and South Indians perform Shraddha ritual on similar days.
September 19, 2013 – Mahalya Pitru Paksha begins - Purnima Shradh
September 20, 2013 – Pratipada Shradh
September 21 – Dwitiya Shradh and Tritiya Shradh
September 22 – Chaturthi Shradh
September 23 –
September 24 – Panchami Shradh
September 25 – Shasti Shradh
September 26, 2013 – Saptami Shradh
September 27, 2013 – Ashtami Shradh
September 28, 2013 – Navami Shradh - Avidhava Navami Shradh - For women who passed when there husbands were alive.
September 29, 2013 – Dasami Shradh
September 30, 2013 – Ekadashi Shradh
October 1, 2013 – Dwadashi Shradh
October 2, 2013 – Trayodashi Shradh
October 3, 2013 – Chaturdashi Shradh
October 4, 2013 – Mahalaya Amavasi – Most important day of Shradh
The last day of Pitru Paksha is known as Sarvapitri Amavasya or Mahalaya amavasya. Mahalaya amavasya is the most significant day of Pitru Paksha.