August: Summer Bull Sumō Tournament 牛突大会 夏場所  
From Saigō Port 45 min 20 min 10 min Infrequent bus service available -
One of the "hon-basho", or main annual bull sumō tournaments on the island.

Date
August 15

Location
Oki Mōmō Dome (beside Oki Kokubun-ji Temple)
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