Pie day is March 14 or 3/14, which are also the same three digits in the mathematical constant Pi or 3.14159265359, or the number you need to memorize to calculate the circumference of a circle.

From a Martha Stewart blueberry pie to a luscious pumpkin and cheesecake affair, these pies will add a sweet touch to any Pi Day celebration. (Or any other occasion, for that matter.)

Pi Day itself dates to 1988, when physicist Larry Shaw began celebrations at the Exploratorium science museum in San Francisco. The holiday didn’t really gain national recogniti

Pi Day is Friday, March 14, and several national chains are celebrating with deals and discounts on pie and pizza.

Pi Day is March 14. Plenty of restaurants and pizza shops are offering deals for cheap or free pizzas and pies. Even more have deals for $3.14. As you sat in elementary school or junior high and your math teacher began introducing algebraic terms to your vocabulary,

Pi Day is a favorite holiday for both food lovers and mathematicians. For the foodies, the reasoning is simple. Pi Day brings discounts and deals for people looking to grab a pizza to celebrate the holiday.

Pi, defined as the ratio between the circumference of a circle and its diameter, is what's known as an irrational number. Despite its ubiquity, not only across math but also in fields as varied as medicine,

National Pi Day 2025 brings pizza and pie deals nationwide, with discounts like $3.14 pizzas and freebies from major chains.