Update - You can find details of Pitru Paksha Shradh 2010 in this article.
Pitr Paksh Shradh, or Pitru Paksha Shraddh, is the annual rituals dedicated to dead parents, relatives and ancestors that are performed in the Krishna Paksha (dark phase) of the Ashwin month in Hindi calendar and on Bhadrapad in other regional calendars. The Mahalaya Sharadh Pitru Paksh fortnight begins with Purnima in Ashwin month. It is believed that the Shradh performed during this period is highly auspicious as it reaches the dead relatives immediately and therefore their souls rest in peace. In 2008, Pitru Paksha Shraddh begins on September 15 and ends on September 29 with Mahalaya Shradh. It must be noted here that Mahalaya Shradh begins in the afternoon on September 28 and ends on noon on September 29.
Mahalaya is usually performed in the early morning and therefore most people will be performing the rituals on September 29 morning. September 29 is also Somvati Amavasi. Amavasi on Monday (Somvar). This makes the day even more auspicious.
The Durga Puja Mahalaya also begins on September 29.
September 29 is Bhadrapad Amavasi in Maharashtra, Gujarat, Karnataka and Andhra Pradesh.
Mahalaya Shradh is also known as Sarvapitri or Sarvapitru Shradh and is the most important day in the fortnight.
You can find the detail dates of the Pitr Paksh Shradh below:
Mahalaya Pitr Paksh Shradh begins on September 15, 2008 – Poornima Shradh
Pratipada and Dwitiya Shradh – September 16
Thritiya Shradh – September 17
Chaturthi Shradh – September 18
Panchami Shradh – September 19
Shasti Shradh – September 20
Saptami Shradh – September 21
Ashtami Shradh – September 22
Navami Shradh – September 23
Dashami Shradh – September 24
Ekadashi Shraddh – September 25
Dwadashi Shradh – September 26
Trayodashi Shradh – September 27
Chaturdashi Shradh – September 28
Mahalaya Shraddh Pitr Paksh ends - September 29 noon.
The most important date to perform Shraddh is the Mahalaya Shradh day. The rituals performed vary from region to region. But the essence and significance of the rituals are the same – remembering the dead parents and relatives and performing the sacred Shraddh rituals so that their souls rest in peace.
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