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Pi Day 2018 (3.14)

Free day at the Exploratorium, nerd parties and $3.14 food truck specials
By - posted 3/12/2018

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.

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