When is it half past the hour? When the minute hand of a clock (the longer hand) has travelled from 12 halfway around the circle to point at 6 this is half past the hour. The hour hand (the ...

O'clock is a way of telling the exact hour on a clock. We say "o'clock" when the minute hand (the long hand) points to the number 12 on the clock. When the minute hand points straight up to 12 ...