It’s a quarter to 1 (Official clock system).

00:45

It’s a quarter to 1.

Correct answer

01:15

It’s a quarter past 1.

Error: mirror minute hand about the vertical axis

00:51

It’s 9 to 1.

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

09:45

It’s a quarter to 10.

Error: quarter to 10