Our kid has been on school break for the last six weeks and we're discovering that we were really depending on her school schedule to tell us what day of the week it is. The trauma of going to Wal-Mart at 10 AM on a Saturday (when I thought it was Tuesday) is freshly etched upon my psyche.(I have considered one of those clocks though. )
Luckily she has a part-time job three days a week (making her the household's top salaried employee) so we're able to keep from totally losing our temporal bearings.
But this is going to be a problem when she graduates high school and leaves the nest. To prepare for that event we're waiting for a liqudiation sale when we're going to buy a couple dozen Dayclocks, keep one, and hand the rest out as retirement gifts...