The Indian light festival Diwali is traditionally lit up by huge numbers of Diya (plural "diyas"). Diya is a contracted form of deep or light given by small earthen pots (also known as Pradeep), with wick made of cotton and dipped in ghee. They are also used for praying to the deceased ancestors and are floated on leaves over the holy rivers like the Ganges at Haridwar.
The festival lasts for five days.The third day is actually the day of Diwali.The other days are accompanied with sweets and firework display.The word Deepawali also known as Diwali means a row of lights.The Indians spring clean there houses and wear new clothes specially for this event.