Deepavali or Diwali is the biggest and the brightest of all Hindu festivals. It is the festival of lights: deep means “light” and avali “a row” to become “a row of lights.” It is marked by four days of celebration. Historically, Diwali can be traced back to ancient India. It most likely began as an important harvest festival. However, there are various legends pointing to the origin of Diwali. Some believe it to be the celebration of the marriage of Lakshmi, the goddess of wealth, with Lord Vishnu.  Read more here.