Every year, around October or November, Hindus, Sikhs, and Jains worldwide celebrate Diwali. Also referred to as Deepavali or the Festival of Lights, the five-day event, whose exact date is determined by the Hindu lunar calendar, dates back over 2,500 years. Hence, it should come as no surprise that Diwali, which will be commemorated from November 5 to November 9 this year, is India’s biggest and most significant holiday.