The crack research staff here at The Blog of Days combs through the Internet, pausing only to look at videos of kittens being precocious or water skiing squirrels, searching all sorts of sites -- I call these these sites the Usual Suspects -- looking for something you can commemorate this evening at your local tavern.
Most of the time the Usual Suspects agree about which micro-mini-holidayette is on tap on any given day; one sometimes suspects that they consult one another. (I do not merely suspect; rather, I am virtually certain that none of these, as yet, consults The Blog of Days.)
But today the crack research staff presents a clear-cut conflict: Hallmark's Ultimate Holiday Site says today is either Machine Day or Red Rose Day (perhaps you should buy flowers for your toaster) and that tomorrow is National Peanut Butter Cookie Day. On the other hand, this rather comprehensive list of 2012 Holidays & Observances says that today is National Peanut Butter Cookie Day.
I suppose you might celebrate peanut butter cookies on both days, if you like such things enough, but I think Hallmark is wrong on this occasion.
The National Peanut Board says today is National Peanut Butter Cookie Day -- and I, for one, would be willing to defer to the Peanut Board's expertise on this... except the Peanut Board web page says that its list of peanut-related holidays comes from Chase’s Calendar of Events, published by McGraw-Hill.
(See what I mean about all the Usual Suspects consulting each other?)
If you're asking my opinion, I say: Pick one National Peanut Butter Cookie Day and stick with it, just like peanut butter sticks to the roof of your mouth. Make it today. Tomorrow, we'll try something else.