Math enthusiasts and geeks alike have been waiting a century for TODAY. Why? Because it’s Pi Day, 3/14/15. And if you want to get crazy about it, you can celebrate at 9:26:53 a.m. since the next numbers are 9, 2, 6, 5, and 3.

And according to ABC News, as befitting its reputation as an elite institution of math, science and engineering, the Massachusetts Institute of Technology has announced that it will send out its acceptance letters for this year’s incoming class on Pi Day, precisely at 9:26 a.m. Oh, and it’s Einstein’s Birthday as well.

Now, how to celebrate? According to Scientific American, we can bake pies, pun intended and because of their circular nature. Pizzas also work, having the right shape, and the right first two letters as well.

You can also hit up science museums around the country.

The National Museum of Mathematics in New York City, for example, will gather people in Madison Square Park to light up a circle around the central fountain and compare its circumference with the distance across it—accompanied by free hot chocolate and pie.

OR, check out the Exploratorium in San Francisco, the Air Force Research Laboratory in Dayton, Ohio, Princeton University and the National Cryptologic Museum near Washington, D.C.

Happy Pi Day!