Dīpāvalī means "a row of lamps". In the North it celebrates Rāma's return to Ayodhyā after fourteen years of exile, when the city lit lamps to welcome him. In the South the day before, Naraka Caturdaśī, recalls Kṛṣṇa and Satyabhāmā slaying the demon Narakāsura. Everywhere, the new-moon night is the night of Lakṣmī, goddess of prosperity, who is invited into clean, lit homes.
The festival runs for five days: Dhanteras (worship of Dhanvantari and Lakṣmī), Naraka Caturdaśī, Lakṣmī Pūjā on Amāvasyā, Govardhana Pūjā or Bali Pratipadā, and Yama Dvitīyā or Bhāī Dūj for brothers and sisters.
