First things first, Happy Pi Day. Huzzah! Please do commence with the celebrating and the carousing.

So why is this Pi Day special? Well, here’s the first 9 digits of Pi (9 digits past the decimal):

3.141592653

In the US, this translates to March 14th, 2015 (3.141592653). At 9:26 and 53 seconds, which occurs both this morning and tonight, we’ll match all 10 digits. And that only happens once a century.

And just to embrace the math geekery further, adding more digits to the analysis only impacts the precision of the 53 seconds. Here are the first 50 digits of Pi:

3.14159265358979323846264338327950288419716939937510

As you can see, Pi skews closer to 9:26:54, so if you are a rounder, that’s the moment to pop that bottle of champagne.