The subject of the time on the clocktower of IH was in a scene in the movie National Treasure. I noticed the past two weeks that movies Q has mentioned have been playing on cable with a frequency I don't understand. National Treasure and Hunt For Red October have been on one channel or another every day for the past two weeks.
In the movie… the pertinent clocktower time was on the back of a hundred dollar bill. It's different in this artwork.