In case you haven't heard, or perhaps are not mathematically inclined, Saturday is the day that sends math geeks into paroxysms of ecstasy.
That is because March 14, 2015 marks "Pi Day"—the sole day this century where the date matches the mathematical formula for the ratio of a circle's circumference to its diameter. In the event those old geometry classes elude, Pi is expressed numerically as "3.1415...", carried out to as far as 1 trillion digits past the decimal. Anyone with a life, however, normally stops after four.
The New York Times points out that the fun really begins (or perhaps began already Saturday morning?) at 9:26:53. That chronological moment in time marks the first 10 digits of Pi.
According to PiDay.org, only 39 digits after the decimal are needed to compute the spherical volume of the entire universe. However, "because of Pi's infinite & patternless nature, it's a fun challenge to memorize, and to computationally calculate more and more digits."
Naturally, that depends on how one defines "fun challenges."