Sadly, out college straight A engineering son couldn’t read my analogue clock with roman numerals in my home office. It took 10 minutes to teach him roman numerals 1 through XII, the analog face number positions, the three hands and how to read them, drill him down, and test him.
10 minutes. School doesn’t do this anymore.
It’s just another way of de-emphasizing Western Civilization.
When you are watching old TV chows, have him sit thru the credits & tell you what year the show was produced-—many are still in Roman numerals.