The Big One is Here – 3.14.15!

Some are calling it the Pi Day of the century.  Others, more dramatically, have deemed it the only (true) Pi Day of our lives.  Whatever you call it, 3.14.15 is undeniably the biggest day in the modern history of math holidays.  Well, in our ten-fingered world, that is.

(On that side note, this whole holiday has a distinctly base-10 bias, doesn’t it?  In the 8-fingered Simpsons world, for example, Pi would be 3.1103… and we would have celebrated the Big One back on March 11, 2003.  Go figure.)

As a devoted member of the Pi Day community for more than 15 years now, I have looked forward to this beautiful, momentous occasion for an incredibly long time.  I’ll be ringing in the big moment, 9:26:53 on 3.14.15, in the Los Angeles area, where I’ll be speaking at a math conference later that afternoon.

(If anyone in L.A. has ideas for more Pi Day fun with me or with Pi Diddy, who just might also be making an appearance in the area on that day, let us know by sending over a quick note!)

Where will you be when the moment strikes?  Don’t make yourself wait another 100 years to do the holiday right!  Yes, it’s on a Saturday, which might throw a bit of a wrench into your plans to celebrate with your students or your work colleagues, but hey, the Big One landing on a weekend gives you maximum flexibility to make it a Pi Day you’ll never forget!

3.14.15 forever,


Luke Anderson is the founder and proprietor of TeachPi.org. Luke has been a Pi Day presenter to K-12, college, and adult audiences around the country for more than 20 years, and is a frequent contributor to Pi-related stories in the media.
  1. Karen McCarthy Reply

    Hi Luke,
    I’m the math coach at Manual Arts High School in south central LA. Our math department is hosting Pi Day on 3/14 from 10:15 am – 12:15 pm. We have Saturday school for CAHSEE prep that day, but we’re letting the students out early to celebrate Pi day, so there will be about 100 students attending! Parents have been invited, too. Would you like to be our special celebrity guest that day?!?!?!

  2. Gloria Reply

    Our Ultimate Pi Day is the same day as our annual SCIENCE FAIR!!! Is that cool or what? Can’t wait! I have Pi pencils, and we will be having some activities while we wait for the judges to deliberate! Can’t WAIT!

  3. Helen Reply

    Hi! We are looking forward to 3.14.15 at our school №17 Feodosia, the Crimea!))) We’ll got much fun!!! Can you have some tips for us?))

  4. Henry Blackford Reply

    I am a teacher at a private school in Asheville, NC. We had a pi recitation contest and I would love to submit our winning entries. Do you have a form for this? I tried the email link, but it didn’t work. Also, we have a great version of American Pi that we would love to record and send in to you. Please let me know. I have some excited students eager to share!


  5. Ted Thompson Reply

    And next year will be even more accurate at 3.1416 (3.14159 rounded)!

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