The story
For the fifteen days before this new moon the ancestors (pitṛ) are held to come down to the earth and wait to be fed by their descendants. The Mahābhārata gives the reason: Karṇa, arriving in heaven, was given gold to eat because in life he had given only gold, never food, in charity. He was allowed back for a fortnight to feed his ancestors, and the fortnight is his.
The new moon is the last chance of the fortnight. Śrāddha for anyone whose death day is not known, or was missed, is performed today, which is why it is also Sarvapitṛ Amāvāsyā, the new moon of all the ancestors.
In Bengal the same dawn is Mahālayā, the invitation to Durgā to descend for her festival. All-India Radio has broadcast Birendra Krishna Bhadra's recitation of the Mahiṣāsura Mardinī at four in the morning since 1931, and the city wakes to it.
