It’s 17 to 9 (Official clock system).

08:43

It’s 17 to 9.

Correct answer

08:44

It’s 16 to 9.

Error: 1 minute later

07:49

It’s 11 to 8.

Error: read minutes starting from hour markings and adding minutes

09:40

It’s 20 to 10.

Error: confuse hour and minute hands