Diwali is celebrated by Indians across the globe as the "Festival of Light," commemorating the return of the mythological king Rama to Ayodhya after defeating the demon king Ravana. Diwali involves wearing new clothes, lighting lamps and fireworks, exchanging gifts, and worshipping the goddess Lakshmi. The five-day celebration includes Dhanteras, Chhoti Diwali, Lakshmi Puja, Govardhan Puja, and Bhai Dooj. The document discusses plans for celebrating Diwali at an organization, including decorating, holding competitions, wearing traditional attire, serving Indian cuisine, and everyone playing a role to make it a success.