on the hour

Idioms  

1. At every hour exactly; one o'clock, two o'clock, and so on. For example, The shuttle to New York departs on the hour. An extension of this idiom is every hour on the hour, meaning every time the clock's big hand reaches twelve, as in The bus passes by the house every hour on the hour.

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Example Sentences

The free event is expected to draw thousands to the slopes of Avenham Park, where the famous egg rolls will take place on the hour, every hour, from 11:00 to 16:00 BST on Easter Monday.

From BBC

Florent Muslija's free-kick on the hour made it 3-2 to Kosovo and Kreshnik Hajrizi added a fourth from point-blank range, before Middlesbrough forward David Strelec handed Slovakia a brief glimmer of hope with an injury-time strike.

From BBC

Arteta's decision to keep faith with his EFL Cup goalkeeper Kepa Arrizabalaga instead of first-choice David Raya blew up in his face when he dropped Rayan Cherki's routine cross for O'Reilly's opener on the hour.

From BBC

As if to revive potentially flagging interest along the way, something big would hit the stage almost on the hour.

From Los Angeles Times

The fury was at its height on the hour when Arsenal keeper David Raya made a save from Georginio Rutter down to his right then slumped to the ground holding his shoulder, requiring lengthy treatment.

From BBC