飛鳥時代
Yōkaichi, Shiga city, which is now Higashiōmi, Shiga city, was named in the Asuka period by Prince Shōtoku. The name Yōkaichi derives from the market which was held on days including 8 (8th, 18th, 28th) in Asuka period. Yōkaichi prospered as a market town and in 2005 merged with four other towns to form Higashiōmi, Shiga.