Pi Day 2018 (3.14)
Free day at the Exploratorium, nerd parties and $3.14 food truck specials
By Johnny Funcheap - posted 3/12/2018
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Any day can be a holiday, and so for math nerds and pie lovers, March 14th is an extra special mathematical date.
Pi (aka π) is the ratio of a circle’s circumference to its diameter which comes out to roughly 3.14. So March 14th has been dubbed “Pi Day”- a quirky and fun celebratory day of both Pi (and pie) which was actually popularized right here in San Francisco back in 1988.
Friday, March 14
2025 Pi (π) Day Celebration at The Exploratorium
Please note, Exploratorium holds their annual Pi (π) Day celebration every March 14; 2025 event information is not yet updated, but here’s what we expect to happen and we’ll update this post when we have more information.
Exploratorium celebrates its own homegrown holiday. March 14th (3/14) ...