I don't have a specific day (or if I do, I never adhere to it), but there are movies that I try to watch annually around a certain date. Usually in October and December. But I have watched Uncle Sam every July (not necessarily on the 4th) for the past three years or so since I got the blu-ray. I love it and think it's cheesy fun (and I can't believe it's on blu-ray, which only makes me love it more). Also, last year around this time I watched I Know What You Did Last Summer, and last night I watched I Still Know What You Did Last Summer. So maybe that has unintentionally become a "thing"?