It’s 25 to 6 (Official clock system).

05:35

It’s 25 to 6.

Correct answer

06:25

It’s 25 past 6.

Error: mirror minute hand about the vertical axis

05:53

It’s 7 to 6.

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

05:30

It’s half past 5.

Error: 5 minutes earlier