Diwali - A Five-Day-Long Festival. Diwali is the festival of lights which falls in the month of 'Ashwin' according to Hindu calendar. 'Deepawali' in Hindi means a row of diyas. Almost every house and street is decorated with lamps, and lights on the day of Diwali. Diwali is a five day festival in India. Dhanteras is the first day of Diwali. On.