When Is Pi Day 2027?
Pi Day 2027
That's 241 days from today.
Rule: always March 14. Check any other date’s weekday
About Pi Day in 2027
Physicist Larry Shaw organized the first recorded Pi Day celebration in 1988 at the San Francisco Exploratorium, where staff marched around a circular space and ate fruit pies.
The date/month format that makes Pi Day work (3/14) is specifically the US convention; countries that write the day before the month, like most of Europe, don't get the same numerical coincidence.
Schools frequently use the date for hands-on geometry and circle-measurement activities aimed at making an abstract constant feel tangible to students.
Pi Day in 2027 — March 14th, a Sunday already off-cycle.
Pi Day, 2027 — day 73 of 2027: ISO week 10 (Q1), 292 left.
Pi Day, 2027: next is Tuesday, March 14th; prior was Saturday, March 14th.
Related dates
Other years
Other March holidays in 2027
Browse every holiday and year on the When Is index.