Yes, I am at work and bored I was gonna tack this post on the rest of our "astronomically important" days discussion thread of a while back (about Equinox and Solstice and such), but it hardly seemed right to resurrect that thread in the Games review forum
So, according to my trivial-calendar-a-day (Totally Trivial - they weren't lying), today (Ground hog's day) is the day halfway between Winter Solstice and Vernal Equinox - thus cross-quarter day.
I told you it was trivial
Tools for your Wizardry(r) toolkit