Diwali, celebrated in October or November each year, originated as a harvest festival that marked the last harvest of the year before winter.
India was an agricultural society where people would seek the divine blessing of Lakshmi, the goddess of wealth, as they closed their accounting books and prayed for success at the outset of a new financial year. Today this practice extends to businesses all over the Indian subcontinent, which mark the day after Diwali as the first day of the new financial year.
Indians celebrate with family gatherings, glittering clay lamps, festive fireworks, strings of electric lights, bonfires, flowers, sharing of sweets, and worship to Lakshmi. Some believe that Lakshmi wanders the Earth looking for homes where she will be welcomed. People open their doors and windows and light lamps to invite Lakshmi in.
Over the centuries, Diwali has become a national festival that is enjoyed by most Indians regardless of faith: Hindus, Jains, Buddhists, and Sikhs.
Hindus interpret the Diwali story based upon where they live:
In northern India they celebrate the story of King Rama’s return to Ayodhya after he defeated Ravana by lighting rows of clay lamps.
Southern 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.
In all interpretations, one common thread rings true—the festival marks the victory of good over evil.
Non-Hindu communities have other reasons for celebrating the holiday:
In Jainism, it marks the nirvana or spiritual awakening of Lord Mahavira on October 15, 527 B.C.
In Sikhism it marks the day that Guru Hargobind Ji, the Sixth Sikh Guru was freed from imprisonment.