07:05

   It's five past seven.

07:15

   It's a quarter past seven.

07:45

   It's a quarter to eight.

07:58

   It's about eight O'clock.

  -It's twenty past four.

  -It's twenty to four.

  -It's a quarter past six.

   -It's a quarter to six.

  -It's half past two.

  -It's ten past eight

  -It's ten to eight

  -It's ten O'clock Sharp.

  -It's about twelve.