For those of us in the US, who use the month/day/year date format, today is Pi Day, a.k.a. 3.14. Celebrate by having a slice at 1:59! Oh, and it’s also Albert Einstein’s birthday, so exercise afterwards to turn the mass of that slice into energy.
Those who use the more logical day/month/year date format, like the Europeans, will have to wait until July, when they can celebrate Pi Day more precisely on 22/7.
UPDATE: Jeez, I forgot what year this is. I should have had that slice at 9:26:54. Although, as some folks on Twitter have pointed out, next year on 3/14/16 we get to celebrate Pi Day to the precision that our date format actually allows.