Diwali is celebrated by Hindus to signify the victories of light over darkness, good over evil, knowledge over ignorance and hope over despair. These victories were achieved by the return of Lord Rama, his wife Sita and brother Lakshman from fourteen years of exile. The lights are intended to illuminate the path of their return to Ayodhya. The event provides a time to emphasize both external and internal purity, extending goodwill and undertaking religious observances, all in aid of enlightenment. Apart from Lord Rama, other deities are also worshipped.
The above is a truncated explanation of an expansive, multi-religious, multi-faceted, autumn celebration that has deep historical roots and wide religious significance for about one and a half billion people. For example, it is not only Hindus, but also Sikhs, Jains and Buddhists who celebrate Diwali. Sikhs celebrate the release from prison of Guru Hargobind and 52 princes in 1619. Jains celebrate the anniversary of Lord Mahavir’s attainment of freedom