Oh, what a joyous day it is! Everyone knows the major holidays; you’ve got the Christmases and the New Years and the Halloweens. Boring! Those are way too mainstream. On the other hand, it seems like every other day is “International Speak Like A Pirate Day” or “National Pet A Rabid Dog Day” or something crazy like that. Today isn’t like either of those. Today is a real holiday that everyone should celebrate. It’s Pi Day!

Why is it Pi Day? Just look at the calendar, silly! It’s March 14, making today 3.14. Get it? 3.14… like the number Pi?

In honor of the occassion, many establishments are offering great deals you should look to take advantage of. Whole Foods is offering $3.14 off pies and pizzas. Your Pie is selling pizzas (as well as beers) for just $3.14. The list goes on. Luckily, Fortune.com compiled a list of the best Pi Day deals for you to check out here.

At the very least, I urge each and every one of you to eat at least one whole pie while basking in wonder at the ratio of the circumference of a circle to its diameter. It’s the right thing to do.