Durga Puja, major festival of Hinduism, traditionally held for 10 days in the month of Ashvina (September–October), the seventh month of the Hindu calendar, and particularly celebrated in Bengal, Assam, and other eastern Indian states. Durga Puja celebrates the victory of the goddess Durga over the demon king Mahishasura. It begins on the same day as Navratri, a nine-night festival celebrating the divine feminine.