It’s a quarter to 9 (Official clock system).

08:45

It’s a quarter to 9.

Correct answer

09:15

It’s a quarter past 9.

Error: mirror minute hand about the vertical axis

08:51

It’s 9 to 9.

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

09:45

It’s a quarter to 10.

Error: quarter to 10