Are schools teaching kids to tell time anymore, or have they cast that aside?
BTW, with the return to clock faces and watch faces thanks to the magic of e-ink, it will be easier for everyone. You can put up a picture with rotating hands, or a number flip thing, or run a movie of leiderhosen clad shephards flitting in and out of the cuckoo clock on the wall.
That's next year at the latest.