Shani dev is one of the Navagraha of Jyotiṣa. Shani dev is embodied in the planet Saturn and is the Lord of Saturday. Shani dev is also known as Śanaiścara The word shani also denotes the seventh day or Saturday in most Indian languages. The word shani comes from ŚanayēKramatiSaḥ , the one who moves slowly, because Saturn takes about 30 years to orbit the Sun. This yantra is used to pacify an afflicted Shani/Saturn and achieve Rajayoga through complete blessings of Shani. When Saturn is malefic in a horoscope, in transit or causes Sadesati, use of Shani Yantra is very Beneficial. Shani Yantra/Saturn Yantra is useful, when one feels depressed. It indicates success inworldly affairs, success in business and the man touches great heights.