Hinduism is often described as a religion of fasts, feasts and festivals. Fasting a Hindu tradition to please God, by controlling and curbing one's desires. Fasts most commonly known as Upvaas or Vrat are the days when devotees refrain themselves from food or water. Fasts of different Gods or Goddesses are observed on particular days. These stories have given solace to millions of people from time immemorial. It would be worthwhile to explain as to how a particular day of the week was allotted to particular star or planet.