It’s 20 to 9 (Official clock system).

08:40

It’s 20 to 9.

Correct answer

09:20

It’s 20 past 9.

Error: mirror minute hand about the vertical axis

08:52

It’s 8 to 9.

Error: read minutes as hours with ‘past’ or ‘to’

08:00

It’s 8 o’clock.

Error: confuse hour and minute hands and read as full hour