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Casual Pi Day

Get ready to indulge in some delicious pie on Casual Pi Day - the perfect excuse to treat yourself and satisfy your sweet tooth!

Wednesday

July 2026

Last updated February 7, 2026 · by the Holiday Calendar Team

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YEARLY DATEJuly 22

OBSERVED INUnited States

CATEGORYSchool

SUBCATEGORYSTEM

INTRO

Introduction

PHOTO

Get ready for a mouth-watering celebration of Casual Pi Day on July 22! This day may not be as well-known as its mathematical counterpart on March 14, but it's just as fun and delicious. Casual Pi Day is all about indulging in your favorite pies, whether they're sweet or savory. And did you know that the first recorded pie recipe dates back to ancient Egypt? Pies have been enjoyed throughout history by people all over the world, making this holiday a truly global celebration. So grab a slice (or two) and join in on the tasty festivities!

TIMELINE

Casual Pi Day Timeline

First Pie Recipes

The first written pie recipes were documented in England during the 1300s, these pies were mostly filled with meat.

American Pie History Begins

Pies were brought to America by the early English settlers, crust was primarily used as a container for the fillings rather than for consumption.

Sweet Pies Emergence

During the late 1700s, fruit pies began to appear, pumpkin pie was commonly served at thanksgiving dinners.

Commercial Pie Production

The mass-production of frozen pies became popular in the 1950s, making pies easily accessible to all households.

Pie Throwing Revival

"Shepherd's Pie" event brought back the tradition of pie throwing in the UK during charitable events.

Casual Pi Day Celebration

The first known celebration of Casual Pi Day, a humorous spin-off to mathematical Pi day, encouraging pie consumption on 22nd July.

GET INVOLVED

How to Celebrate Casual Pi Day

Bake a pie

Get in the kitchen and bake your favorite pie to celebrate Casual Pi Day! Whether it’s apple, cherry, or chocolate cream, indulging in a delicious homemade pie is the perfect way to honor this fun holiday.

HAVE

Have a pi-themed movie night

Gather some friends and have a movie night featuring films with “pi” in the title, such as “Life of Pi” or “American Pie”. Serve some pie slices as snacks and make it a casual and fun celebration.

WEAR

Wear pi-themed clothing

Show off your love for pi by wearing clothing with pi symbols or references. This could be a t-shirt, socks, or even a hat. It’s a simple and fun way to celebrate Casual Pi Day.

Do a pi-themed scavenger hunt

Create a list of items related to pi, such as circular objects or numbers, and have a scavenger hunt with friends or family. This is a great way to get everyone involved and have some fun on Casual Pi Day.

HOST

Host a pi recitation contest

Challenge your friends to see who can recite the most digits of pi from memory! This is a fun and unique way to celebrate Casual Pi Day and show off your mathematical skills.

WHY THIS DAY MATTERS

Why We Love Casual Pi Day

It brings people together

Pi Day is celebrated by people of all ages and backgrounds, making it a great opportunity to bring friends and family together. Whether you have a casual Pi Day party at home or attend a community event, the holiday encourages socializing and having fun with others.

It's a fun and laid-back holiday

Casual Pi Day allows us to celebrate the mathematical constant in a more casual, easygoing way. Instead of stressing over memorizing digits or participating in complicated activities, we can simply enjoy some pie and appreciate the simplicity of pi.

You get to indulge in delicious pies

On Casual Pi Day, we have the perfect excuse to treat ourselves with some sweet or savory pies. Whether you prefer fruit pies, cream pies, or meat pies, there's a pie out there for everyone to enjoy on this holiday.