March 14th is always Pi Day.
What is Pi Day?
This is the date that matches the numerical notation of the math symbol - PI.
Commonly know as 3.14 + a lot of other numbers without end.
You can find more information about it by clicking on the website dedicated to Pi Day.
This Saturday the date is even more special because it equals more of the number:
3.1415 = 3/14/15
How will you celebrate PI day?
You could buy a pie. Blueberry for me, please:
Or you could make a pie:
Whatever you do - enjoy your Pi (or pie).
p.s. I just found this on Facebook and had to add it to this post: