It’s 20 past 11 (Official clock system).

11:20

It’s 20 past 11.

Correct answer

10:40

It’s 20 to 11.

Error: mirror minute hand about the vertical axis

11:04

It’s 4 past 11.

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

04:49

It’s 11 to 5.

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