Diwali, the Festival of Lights, is one of the major holidays observed by Hindus, Jains, Sikhs, and some Buddhists. The celebration, which dates back over 2,500 years, is a time of joy, unity, and spiritual reflection. While the dates vary annually based on the Hindu lunar calendar, Diwali usually occurs in October or November. This year, the festival will be marked from November 10 through November 14, 2023.