27 September 2011, today is Amavasya Mahalaya Durga Puja. It is No Moon in Ashwin month as per North Indian Hindi calendars and in Bhadrapad month as per Marathi, Gujarati, Telugu & Kannada calendars. It is also observed as Pethara Amavasya or Sarva Pithru Amavasya. In Bengal, actual preparations for Durga Puja are started today with Mahalaya Durga Puja Torpon.
Pitru Tharpana rituals are the major rituals observed today in Gaya, Varanasi, Haridwar, Rishikesh & Rameshwaram.
Mahalaya Amavasya marks the end of Bhadrapada month in Maharashtra, Gujarat, Andhra Pradesh & Karnataka.
Bathukamma festival begins on this Amavasya in Telangana region of Andhra Pradesh.