at the top of the hour

at the top of the hour

At the start of the hour (such as 12:00, 3:00, etc.). And we'll cover that news story at the top of the hour.
See also: hour, of, top

at the top of the hour

Fig. at the exact beginning of an hour. (Alludes to the big hand on a clock pointing to the 12. Often heard on television or the radio. See also at the bottom of the hour.) Every class in my school starts at the top of the hour. Our next newscast will be at the top of the hour.
See also: hour, of, top
References in periodicals archive ?
Later in the month, resurfacing works on the Taramakau Bridge will require work overnight with the bridge opening at the top of the hour only to clear traffic, 9 pm through to 6 am, Thursday to Friday, 26 and 27 October.
at the top of the hour, on CBS-owned and affiliate radio stations) and one-minute news capsules.
There will be a major interview at the top of the hour and a weekly feature where Sophy explores how the country is reacting to Westminster.
Twitter will be transmitting 60 to 120 seconds of video footage of the New Year's Eve celebrations at the top of the hour from the respective time zones in the world.
There will be 12 flights daily to London, with departures from Frankfurt at the top of the hour, plus 10 flights to Brussels - always at 25 minutes past the hour, and 13 flights daily to Vienna in unison with Austrian Airlines, departing at 10 minutes to the hour.
Flights depart at the top of the hour beginning at 7 a.
Three games will be played, each starting at the top of the hour, with the first beginning at 6pm.
It should have led the local nightly news, and been breaking news at the top of the hour on CNN.
The Comcast Holiday Spectacular will be shown daily for the public at the top of the hour, seven days a week, from 10:00 a.
Drivers will be able to get through at the top of the hour for ten minutes, says Transport Agency Journey Manager, Lee Wright.
There will be a major interview at the top of the hour and a weekly feature in which Sophy explores how the country is reacting to Westminster.
The flights, which depart at the top of the hour, are part of a significant hub schedule enhancement that includes three new cities receiving TWA jet service.