It’s 19 to 7 (Official clock system).

06:41

It’s 19 to 7.

Correct answer

06:40

It’s 20 to 7.

Error: 1 minute earlier

05:51

It’s 9 to 6.

Error: read minutes starting from hour markings and adding minutes

08:30

It’s half past 8.

Error: confuse hour and minute hands