Navratri, a nine-day celebration of goddess Durga, is held twice a year. Chaitra Navratri, the first Navratri of the year, is observed in the months of March and April. Because it occurs in the spring, it is also known as Vasant Navratri. While the fall Navratri celebration is referred to as Sharad Navratri.   'Navratri' literally refers to the nine nights of the celebration. Nine manifestations or avatars of Goddess...