Pi Day is celebrated on March 14 (3/14).
Number three, one and four are the first 3 significant digits of Pi.
Pi refers to a circle’s circumference to its diameter.
The mathematical constant Π = 3.14159265359…
Pi Approximation Day
Pi Approximation Day is celebrated on July 22 (22/7 = 3.14)
Akira Haraguchi: Master Pi-Man
Akira Haraguchi managed to recite 111,700 digits in public Pi recitation. According to TheGuardian, Akira Haraguchi associated each number with a syllable, then he made stories from the words produced by the syllables.
“I have created about 800 stories, whose lead characters are mostly animals and plants (…) To me, reciting pi’s digits has the same meaning as chanting the Buddhist mantra and meditating”. Akira Haraguchi