毎まい正しょう時じ

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

every hour on the hour

Used in schedules, announcements, and formal contexts to indicate something occurs exactly at the start of each hour (e.g., 9:00, 10:00, 11:00). Often appears as 毎正時に.

• バスは毎まい正しょう時じに出しゅっ発ぱつします。

  The bus departs every hour on the hour.

• 毎まい正しょう時じのニュースをお伝つたえします。

  We bring you the news at the top of every hour.