正しょう時じ

noun, noun which may take the genitive case particle 'no', adverb, adverb taking the 'to' particle

on the hour; exactly at the hour

Used to indicate that something happens exactly at the top of the hour, such as a clock striking or a scheduled event starting precisely at an hour mark. Often used in formal or scheduling contexts.

• 時計とけいが正しょう時じを打うった。

  The clock struck the hour.

• バスは正しょう時じに出しゅっ発ぱつします。