be on the hour
be on the hour
To occur each time the clock turns to the next hour. When does the next bus come? Is it on the hour? Don't worry, our live updates will be every hour on the hour.
See also: hour, on
Farlex Dictionary of Idioms.
- on the hour
- on the hour/half-hour
- till all hours
- till all hours (of the day and night)
- till/until all hours
- by the hour
- quarter past (a given hour in time)
- zero hour
- the top of the hour
- 11