It’s 20 past 10 (Alternative clock system).

22:20

It’s 20 past 10.

Correct answer

21:40

It’s 20 to 10.

Error: mirror minute hand about the vertical axis

22:16

It’s 16 past 10.

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

16:50

It’s 10 to 5.

Error: confuse hour and minute hands