π Day March 14, 2018
Welcome to our 31st annual π Day! Help us celebrate this never-ending number (3.14159 . . .) and Einstein's birthday as well. On the afternoon of Wednesday, March 14, 2018, participate in π-related activities and enjoy a piece of pie. If you can't join us in person, visit Exploratorium Island in Second Life where you can play with πi exhibits.
Founded at the Exploratorium by our own Prince of Pi, physicist Larry Shaw, π Day has become an international holiday, celebrated live and online all around the world.
Learn about the long and rich history of pi.
Try these fun pi actiivities at home.
Learn about how pi inspired a celebration and became a national holiday.
Join us for Pi Day, celebrated by number lovers around the world.
Pi Day isn't just a day—it's a way of life.
