The festival of Navratri is traditionally observed for 9 days in India. It is celebrated in honor of Goddess Durga and her nine forms, each day dedicated to one form of the Goddess. The festival often culminates with the tenth day called Vijayadashami or Dussehra, which marks the victory of good over evil. In some regions, Navratri celebrations may be considered to span 10 days including Vijayadashami, though the main festival is for 9 days. The duration may sometimes vary slightly due to lunar calendar variations, but 9 days is the standard observance period. Thus, Navratri is celebrated for 9 days in India, often with an additional day of Dussehra making it effectively 10 days in some traditions.