That's two out of two people who have not seen it. And here I thought that most people had seen it. Then again, it is fairly old.
It is just an odd coincidence. I hardly know anyone who hasn't seen it. Edit: fun fact: in German it is called "Stirb Langsam", which doesn't translate to "die hard" but to "die slowly". I have no clue why.
I bet the literal translation in German conveys some really unfortunate meaning. Perhaps almost the opposite of what the title is meant to convey in English.
You can only watch so many Hallmark movies about little girls who adopt adorable critters, or golden retrievers that cause some unlikely couple to fall in love, or some cinderella-like gal to find her prince Mr. Right just before Xmas, or some other variant of snowstorm, cute animals, love stories, mistletoe and such... ...before you desperately want a shootem’ up movie. And the film was set on Xmas Eve I think.
You don't have to be living under a rock. The movie didn't cycle to cable very often, and it is not on any streaming service I am aware of. My memory of Die Hard is pretty hazy but Christmas iconography was everywhere, in practically every scene. That's enough to make it a Christmas movie. This, I wish I could give this a double like.
It takes place on Christmas, there is Christmas music, at least one Christmas tree, and a Santa hat. So I would say yes.
Your post made me think about it a bit. I think the hardest part of the translation here is that - like many English words - it has several meanings. Die hard can be imperative, meaning "come on, be hard to kill". That seems to be the original meaning from the 19th century. It is also used as an adjective (usually with a hyphen), meaning tough, extremist, stubborn, convinced, fanatic, and half a dozen other things. In German there is no equivalent term. You can either use the first or the second one. "Knallhart" means die hard, but it doesn't quite fit. The problem with "Stirb Langsam" is that dying slowly is associated with torture. No body wants to die slowly.
One of the better Christmas movies, no less. Similarly with Diehard 2 ("How can the same shit happen to the same guy twice?"). One might also be tempted to consider Gremlins and Childsplay to be Christmas movies as well, though like Home Alone 3 that claim is very tangential.