It’s a quarter past 5.

17:15

It’s a quarter past 5.

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

17:15

It’s a quarter past 5.

Error: read quarter as a number

16:45

It’s a quarter to 5.

Error: confuse ‘past’ and ‘to’

16:45

It’s a quarter to 5.

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