Say that the doors will open only at 9 o'clock, 10 o'clock, 11 o'clock, 12 o'clock etc. How do I phrase the following sentence correctly?
Make sure to be there every full hour.
Is the word "full" correct here? I want to emphasize that it is not just every hour (since that could also be 09:30 and 10:30 and 11:30 and 12:30 etc. because they are one hour apart), but specifically every time the hour reaches 00 minutes.