5.20 It is twenty minutes past five.
6.55 It is 5 minutes to seven.
1.05 It is 5 minutes past one.
6.30 It is half past six.
0.15 It is 15 minutes past twelve.
5.30 It is half past five.
8.45 It is a quarter to nine
12.10 It is 10 minutes past twelve
2.45 It is a quarter to three
3.55 It is 5 minutes to four