sentences:  It is also known as "Navaratri" ("Nava-ratri" = nine-nights) and is a 10-day festival with the last day being Vijayadashami, the most auspicious day of Dasara.Dasara usually falls in the month of September or October.According to a legend, Vijayadashami denotes the victory of truth over evil and was the day when the Hindu Goddess Chamundeshwari killed the demon Mahishasura.