As per one legend Mahishasura the mighty demon worshipped Lord Shiva and obtained the power of eternity. So he started to kill and harass innocent people and set out to win seven lokas. Intimated by his power all the gods from swargaloka appealed to Lord Shiva to tame the demon. Then Brahma, Vishnu and Maheshwar (Shiva) united their supreme powers and created a divine being called Shakti or Durga the Warrior Goddess. Mahishasura who happened to see this divine beauty Durga got mesmerized by her beauty and approached her with the intention of marriage. Goddess Durga agreed to marry him but in one condition that Mahishasura should win over her in duel. Mahishasura who was proudy of his power agreed for the duel. The duel went on for 9 nights and the end of 9th night Goddess Durga beheaded Mahishasura. So the nine nights for which the war was fought is called Navrathri. The tenth day is celebrated as Vijayadashmi.
Nine different manifestations of Durga are worshipped during Navratri th