It’s 23 to 11 (Official clock system).

10:37

It’s 23 to 11.

Correct answer

10:36

It’s 24 to 11.

Error: 1 minute earlier

09:51

It’s 9 to 10.

Error: read minutes starting from hour markings and adding minutes

07:50

It’s 10 to 8.

Error: confuse hour and minute hands