Telling time on a clock with hands

People with dyslexia have extreme difficulty telling time on a clock with hands:

* When asked what time it, they may say something ridiculous, such as, "It's ten past quarter to."
* They may be able to tell whole hours and half hours (5:00, 5:30, etc.) but not smaller chunks, such as 5:12.
* Concepts such as before and after on a clock are confusing.
o Therefore, time arithmetic is impossible.
* Getting them a digital clock only helps a little bit.
o Now they can tell what time it is at the moment, but if you tell them to be home in 15 minutes, they can't figure out when that would be.