In Sanskrit Shani is called Sanischara, which means, 'slow mover'. Shani Maharaj is a great devotee of Lord Shiva and Lord Vishnu. Shri Shani Mahatmya describes the story of Shanis life.
According to Astrology, Saturn is a powerful planet and has the power to obstruct or destruct. According to the hindu astrology Shani is the name for the planet Saturn, which is one of the Navagraha (the nine planets). Saturn is a slow-moving planet and it plays a critical role in the life of a person. Shanivar (Saturday) Aarti - Shani Dev Aarti Shanivar or Shaniwar (Saturday) is dedicated to Shani Devta (Saturn).