Welcome to the festival of Diwali, the biggest festival of India. Also known as Deepavali or Dewali, it is celebrated across the length and breadth of India by almost all the communities. The history of Diwali dates back to pre historic times, and there are multiple theories of its origin. Today, it is celebrated for five days. The celebration involves cooking, meeting friends and relatives, taking blessings, performing pujas, buying mettalic objects, gifting, lighting up houses with diyas or decorative lights, decoration of homes, and, definitely, bursting of fire crackers.