What Day Is Pi Day 2024. Pi2day 2024 marks an essential milestone for pi network—it’s the last pi2day before we launch open network! When the date is written in the format of month and date, it matches the first three digits of the pi value.
Pi day was first celebrated in 1998 in san francisco by larry shaw. While pi day was only officially instated as a national holiday in 2009, the mathematical symbol, pi, has been around for 4,000 years.