Diwali is the Hindu festival of lights celebrated in India and around the world. It commemorates the return of King Rama to his kingdom of Ayodhya after defeating the demon king Ravana. Upon his return, the people lit lamps, set off fireworks, and celebrated. Today, Diwali involves the lighting of lamps, fireworks, exchanging of sweets, and celebrating with family. It is one of the biggest and most important festivals in Hinduism.