1911 Encyclopædia Britannica/Dusserah
DUSSERAH, or Dasara, a Hindu new-moon festival (sometimes called Maha-navami), held in October, and specially connected with ancestral worship. In the native states, such as Mysore, the rajas give public entertainments lasting for ten days, and especially invite European officials to the festivities, which include horse-racing, athletic contests, and banquets.
See J. A. Dubois, Hindu Manners, Customs and Ceremonies, p. 577.