Community π Day

Wednesday, March 14, 2018 • 10:00 a.m.–5:00 p.m. 

All Ages

Note: Pay-what-you-wish on Community Days, when museum entry is on a first-come, first-served basis. 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 31st annual π 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 π Shrine!

Also, be sure to share your Pi Day spirit with #PiDaySF and @Exploratorium. 


Schedule of Events

10:00 a.m.–5:00 p.m.
NanoJems: Million Digits of π
East Gallery Corridor, Microscope Imaging Station

10:00–4:30 p.m.
π Activities with the Explainers
Bechtel Central Gallery

11:00 a.m.–1:59 p.m.
Throwing π with Explorables
Bechtel Central Gallery

Why π? with Ron Hipschman and Lori Lambertson
Phyllis C. Wattis Webcast Studio

1:30 p.m.
π Procession Gathers
Bechtel Central Gallery

1:59 p.m.
π Procession Begins

1:59–2:45 p.m.
π Day Band a.k.a. Mission Delirium
East Gallery

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