"Hindus interpret the Diwali story based upon where they live:In North India they celebrate the story of King Rama's return to Ayodhya after he defeated Ravana by lighting rows of clay lamps. South India celebrates it as the day that Lord Krishna defeated the demon Narakasura. In western India the festival marks the day that Lord Vishnu, the Preserver (one of the main gods of the Hindu trinity) sent the demon King Bali to rule the nether world."