It’s a quarter past 7.

19:15

It’s a quarter past 7.

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

19:15

It’s a quarter past 7.

Error: read quarter as a number

18:45

It’s a quarter to 7.

Error: confuse ‘past’ and ‘to’

18:45

It’s a quarter to 7.

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