It’s 20 past 8 (Official clock system).

08:20

It’s 20 past 8.

Correct answer

07:40

It’s 20 to 8.

Error: mirror minute hand about the vertical axis

08:04

It’s 4 past 8.

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

04:40

It’s 20 to 5.

Error: confuse hour and minute hands