before long (no clue how long if you can't read an analogue clock) you'll have to teach them about 24 hrs in a day, 7 days in a week, 4 weeks in a month, 12 months a year. 365.and why we have a Gregorian calendar why it wasn't always that way.oh yeah, and the 29th of February (leap years).
pretty sure you can get the last part without glasses