It’s 21 past 9 (Official clock system).

09:21

It’s 21 past 9.

Correct answer

09:22

It’s 22 past 9.

Error: 1 minute later

09:05

It’s 5 past 9.

Error: read minutes starting from hour markings and adding minutes

04:45

It’s a quarter to 5.

Error: confuse hour and minute hands