Maa Siddhidatri is worshipped on the ninth day of Navratri. According to Hindu mythology, Rudra worshipped Adi-Parashakti, the supreme Goddess of Power, when the universe began. Since she had no form, Adi-Parashakti appeared in the form of Siddhidatri from the left half of Lord Shiva. When this happened, Shiva came to be known as Ardha-Narishwar.











