Diwali, Deepavali or the Festival of Lights, is a culturally important holiday in India, Nepal, and Sri Lanka. Its origins have roots in the Hindu religion. It’s celebrated in October or November, falling on different days, since it’s based on the lunar calendar. The main night of the holiday falls on the darkest night of the month. Diwali represents the triumph of good over evil, light over darkness, and overall hope over despair. The festival is celebrated in many countries outside of South Asia. While it is a national holiday in India, Nepal and Sri Lanka, it is also officially recognized in Fiji, Guyana, Malaysia, Mauritius, Myanmar, Singapore, Suriname, and Trinidad and Tobago.