Fast on Thursdays

Thursday, which is Brihaspatiwar or Vrihaspativar, is dedicated to Vishnu and Brihaspati, the Guru of Devas.  Thurdsay is also popularly known as Gurubar or GuruvarA fast is observed on the day and food is consumed only once. In some areas, people make it a point to visit Hanuman Temple on ThursdaysThere are numerous stories associated with the reason for observing Upvaas, or fast, on Brihaspativar. Many of the stories vary from region to region.
 Almost all stories suggest that those who perform pujas and Vrats on Thursdays will be blessed with wealth and a happy life. In some stories, Lord Vishnu appears in the guise of a Sadhu to test the devotees on Thursdays. In other stories, it is Brihaspati. Those devotees fasting on the day wears yellow clothes and offers yellow colored fruits and flowers to Vishnu and Brihaspati. Food is only consumed once and includes Chana Dal (Bengal Gram) and ghee. Basically, yellow colored food is eaten on the day.