In 1988, the earliest known official or large-scale celebration of Pi Day was organized by Larry Shaw at the San Francisco Exploratorium, where Shaw worked as a physicist, with staff and public marching around one of its circular spaces, then consuming fruit pies.
Najraniju poznatu službenu ili veću proslavu Dana broja pi organizirao je 1988. godine Larry Shaw u sanfranciskanskom Exploratoriumu, gdje je Shaw radio kao fizičar, pri čemu su osoblje i javnost marširali oko jednog od muzejskih kružnih prostora nakon čega su konzumirali voćne pite.