Thursday is dedicated to alleviating the bad influence of Lord S hani. The Vrat on this day is mainly observed by those people who believe in Hindu astrology. Black is the color of the day and people visit Shani shrine or Navagraha shrines. Food is only consumed once on the day. Saturday Fasting Dedicated To Hindu God Shani and Hanuman Talk about Shani or Sani to a Hindu and the first re action will be fear and then the mentioning of ill effects and troubles. Shani is dreaded by Hindus, especially by those who believe in astrology. Many people observe an Upvaas or fast to avoid the adversities and misfortunes on Shanivar or Saturday. It is believed that those who have the blessing of Lord Hanuman are protected from the wrath of Shani. 
Therefore many people make it a point to worship Hanuman at home or in temples. Black is the preferred color on Thursday. Shani, one of the Navagrahas, is worshipped in numerous temples and there are also temples exclusively dedicated to Sani. Devotees who are observing Shanivar Vrat usually visit Shani shrines. Black colored items like sesame til, sesame oil, black clothes, and black gram whole are offered to Shani. It must be noted here that the color of the idol of Shani is always black in color.
