Why today? Well, because today is the 22nd of July, or 22/7- and 22 sevenths is a bit more than three- in fact, it's about 0.001 more than π.
But heck, AtπD isn't just for scientists, mathematicians and other people who argue on which of Euler's equation or Maxwell's Laws is more elegant. It's for everyone! Go on, bake a pie. Or something similar to a pie. Maybe something you can use in place of a pie.
Me, I've got some Cottage Pie and some Banana bread in the oven. I'm kinf od worried about the banana bread, actually. Since I have no idea how to make it, I googled it and took whatever Link One said as gospel. Let's just hope it wasn't hoaxrecipes.com. I guess time will show if my loaf turns out to be a twenty-two seven or an Alabama.