At my final place of work* before retiring to sunnier climes, I asked the girl (early thirties with an MSc) I shared an office with when D-Day was..
When she looked blankly at me and said "Is this one of your trick questions?"
I replied "No, but I'll give you a clue, it was the 60th anniversary this week.."
"Ooh," she said triumphantly, "1920.."
We have to face it that these dates just don't carry the same resonance with the young that they do with us older scrotes.
(* it was in Malvern)