Diwali is observed in large parts of South and Southeast Asia and is India's most important holiday. With prayers, fireworks, food and festivities, Hindus, Buddhists, Jains and Sikhs around the world are expected to celebrate.
With such a large span of countries, religions and believers, the celebration of Diwali looks different depending on the region, and the stories about why the holiday is celebrated vary. But the central theme - the triumph of good over evil, unites the festivities.
Those who celebrate usually often put out oil lamps outside their homes. Many buy new clothes or gold-colored things, light fireworks and visit temples for prayer and offerings.
The date of the holiday varies and is based on the Hindu lunar calendar, but usually falls around the end of October and the beginning of November.
Diwali is also celebrated outside Asia in diaspora groups around the world.
