Pi Day—Free Day!

Tuesday, March 14, 2017 • 10:00 a.m.–5:00 p.m. 

Exploratorium, Pier 15

Free

All Ages

Note: Entry is subject to capacity; admission is not guaranteed. We don't accept group or field trip reservations; group entry is discouraged due to large crowds.


Welcome to the 30th annual Pi Day, the mathematical holiday founded at the Exploratorium and celebrated by number lovers around the world. To honor the never-ending number 3.14159... (and Einstein’s birthday), we’ll serve up π-themed activities, rituals, antics, and plenty of pie. Find out what's so special about this famous mathematical constant, and take your (decimal) place in our annual march to the Pi Shrine!

Come visit us on March 14 when we open our doors to the public for free. 

Schedule of Events

1:00–3:30 p.m.
NanoJems: Million Digits of Pi
East Gallery Corridor, Microscope Imaging Station

1:00–3:30 p.m.
Pi Activities with Explorables and the Explainers
Bechtel Central Gallery

1:00 p.m.
Why Pi? With Ron Hipschman and Lori Lambertson
Phyllis C. Wattis Webcast Studio

1:30 p.m.
Pi Procession Gathers
North Gallery

1:59 p.m.
Pi Procession Begins

2:15 p.m.
Pie Serving!
North Gallery