A season of professional sumo Sumo tournament. Open competition a year, March 6: in January, may, July, September and November, each time it takes a long time for 15 days.
Sumo Sumo season of his career. The competition is open 6 times per year in January, March, May, July, September and November, each session lasts for 15 days.
The season of professional sumo wrestler, open competition each year 6 times was in January, March, may, July, August and November. Each time for 15 days.