It’s a quarter past 3.

15:15

It’s a quarter past 3.

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

15:15

It’s a quarter past 3.

Error: read quarter as a number

14:45

It’s a quarter to 3.

Error: confuse ‘past’ and ‘to’

14:45

It’s a quarter to 3.

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