Durga Puja, also known as Durgotsava, is a major Hindu festival celebrated annually in honour of Goddess Durga. It symbolises the triumph of good over evil, as Goddess Durga vanquished the demon Mahishasura. The festival typically lasts 10 days (Navaratri), with the main celebrations occurring during the last four days (Saptami, Ashtami, Navami, and Vijayadashami).