Fast of Saturday is of the most significance weekday fast. According to the scriptures, people in whose Kundali Saturn (Shani) is in weak position or it is not able to give its favorable results, must observe this fast.
Once a debate occurred between all the Gods in the heaven about the greatest of them all. But, they were unable to decide and the debate turned into a war like situation. All of them then went to Indra and asked him to