Do you remember, in Halo 3, the graffiti on Valhalla, depending on the day? For example, on New Year's Day, the phrase "Make love, not war" was written on a wall. What if something like this was in Halo 4? I didn't play on Ragnarok on Christmas, so I couldn't notice. But if someone can change the date on their console and check the original spot or the entire map, post here if you found something
Oh, and is there an "Official 343i day"?