It’s 22 past 9 (Official clock system).

21:22

It’s 22 past 9.

Correct answer

21:21

It’s 21 past 9.

Error: 1 minute earlier

21:06

It’s 6 past 9.

Error: read minutes starting from hour markings and adding minutes

16:45

It’s a quarter to 5.

Error: confuse hour and minute hands