It’s 20 past 5 (Alternative clock system).

17:20

It’s 20 past 5.

Correct answer

16:40

It’s 20 to 5.

Error: mirror minute hand about the vertical axis

17:16

It’s 16 past 5.

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

16:17

It’s 17 past 4.

Error: confuse hour and minute hands and read as hours with ‘past’ or ‘to’