Diwali (also known as Deepavali, the "festival of lights") is an ancient festival celebrated in autumn every year. Diwali is the biggest and the brightest festival in India. The festival spiritually signifies the victory of light over darkness. The festival preparations and rituals typically extend over several days, but the main festival night of Diwali coincides with the darkest, new moon night. Before Diwali night, people clean, renovate and decorate their homes and offices.