Navratri is a significant Hindu festival that is observed over nine nights and 10 days during which nine forms of Goddess Durga are worshipped. The festival marks the victory of good over evil. As per the Mahakala Samhita, there are four Navratri in the Vedic calendar named Sharad Navratri, Chaitra Navratri, Magha Gupta Navratri and Ashadha Gupta Navratri. The Navratri that usually falls in September-October is known as Sharad Navratri. It is the most significant Navratri that is celebrated with great fervour and enthusiasm across the country.