A chance to practice random (or less than random) acts of kindness. It certaionly doesn't need to be of the level described in the Bible - just a helping hand, especially to a stranger would do nicely.
National Open An Umbrella Indoors Day - care to tempt fate? This superstition may have started with the Egyptians, who thought it offended the gods if they made shade in a place (a room) where it already existed. Any other superstiitions you have?
Finally, it's National Coconut Torte Day. I love coconut in many forms and this would be one. Here's a recipe for any of you who would like to create your own Torte. I hope it works. Ghirardelli Coconut Almond Torte with Chocolate Chips recipe.