Die Hard isnt a Christmas movie

I've seen Psycho 20 times, including once in the theater, and forgot it was even set at Christmas time. Apparently there were some Christmas decorations in the background of a street shot, so Hitch put a "December 11th" title card at the beginning.

One shot and a title card, that's it. That's not really comparable to Die Hard, a movie where Christmas is part of the plot and keeps being referenced throughout (ie, "I have a machine gun, ho ho ho" as opposed to "I have a machine gun, L'Chaim!").

I think if you asked the average person when Die Hard is set, they'd know it was Christmas time. Not so with Psycho.