Based on the religion, the biggest festival of Dashain is a celebration of Goddess Durga’s victory over evil Mahisashur. It has a symbolic meaning deeply rooted in Nepalese society. Dashain is the longest (15-day-long) and the most auspicious festival in Nepal. Dashain festival falls in September or October, starting from the Shukla Paksha (bright lunar fortnight) of the month of Ashwin and ending on the full moon day (Purnima).
Among the 15 days (Ghatasthapana to Purnima) for which it is celebrated, the most important days are the first (Ghatasthapana), seventh (Saptami), eighth (Maha-Astami), ninth (Navami), and the tenth (Vijaya Dasami/Tika), but the tenth day is very important all over the country Shakti is worshiped in all her manifestations. Dashain festival is also known for its importance in family gatherings, as well as in the renewal of community relations and links. People return from all parts of the world and country to celebrate together. During the festival, all government offices, educational institutions, and other private offices remain closed for the holiday duration.