1 часы (6:30)- It's half past six.

2 часы(11:45)- It's a quarter to twelve.

3 часы (6:15) - It's a quarter past six.

4 часы (11:00)- It's eleven o'clock.

5 часы(11:30) - It's half past eleven.

6 часы (6:45)- It's a quarter to seven.

7часы(11.55)- It's five minutes to twelve.