time expression for hour ending in 00? [duplicate]

I have the following case: "This will be triggered from hour to hour". So if it is 9:32 the trigger will activate on 10:32. My question is: If I want to say from hour to hour BUT I want to say every hour ending in 00. So if it is 9:32 the trigger will be at 10:00.

Is there some kind of expression for that?


Solution 1:

Things that occur at X:00 can be said to occur on the hour or at the top of the hour (at X:00, the minute hand is at the top of the clock). If it recurs, you could say it happens every hour, on the hour.