It’s a quarter past 9.

09:15

It’s a quarter past 9.

Error: read digital clock as if it were an analogue clock

09:15

It’s a quarter past 9.

Error: read quarter as a number

08:45

It’s a quarter to 9.

Error: confuse ‘past’ and ‘to’

08:45

It’s a quarter to 9.

Error: confuse ‘past’ and ‘to’ and read quarter as number