Of a time period, Every 60 minutes, Hourly, Time-related, Occurring every 60 minutes, Timed like some air shuttles, Of an hour, Occurring 24 times a day, Like many therapy appointments, Like clock chimes, Happening every 60 minutes (archaic), Happening every 60 minutes, Each 60 minutes
Now we are looking on the crossword clue: Of a time period, Every 60 minutes, Hourly, Time-related, Occurring every 60 minutes, Timed like some air...