Navratra or the Nine-Nights are the nights of auspicious nature, and Maa Durga is being worshipped these 9 nights.
Navratras are observed twice a year. The first set of Navratras are celebrated in March & April and the second are observed in September & October.
To protect the world from Mahishasur atrocities the trinity of Brahma, Vishnu and Shiva united their powers to give birth to a female warrior-goddess Durga. Dazzled by the divine beauty, Mahishasura proposed the Goddess for marriage but was instead challenged to a duel that went on for nine days and nights and at last, resulted in the beheading of Mahisa on the tenth. The nine nights came to be known as Navratri, while the tenth day was called vijaya dashami, the tenth day that brought the triumph of good over the evil.
Devotees The nine days and nights of Navratri are totally dedicated to Devi Maa and includes fasts, strictly vegetarian diets, japa(chanting mantras in honor of the Goddess Shakti), chanting religious hymns, prayer, meditation and recitation of sacred texts related to Devi Maa.
We celebrate Navratras with utmost devotion and purity. Shringar is done in temple on all the nine nights of navratri. A Mand of Maa is decorated separately and Special Puja of Maa Durga including Durga Shaptsati path is performed daily by Brhamin during Navratri.