It's one o'clock.
It's quarter past one.
It's five minutes to five.
It's twenty to six.
It's twelve o'clock.
It's five past seven.
It's twenty to seven.
It's twenty-five to twelve.
It's twenty-five past twelve.
It's quarter to five.
It's half past one.
It's twenty-five past ten.
It's six o'clock.
It's half past nine.
It's ten to three.
It's ten to twelve.