All-Purpose’s three locations—pizzerias in Shaw and Navy Yard, and a snug spinoff in Bethesda—will offer Pi Day specials.

Pi isn’t just a term you see in math problems. It’s a special number with its own unique day. Pi Day is celebrated every year ...

March 14 marks National Pi Day, a celebration of the mathematical constant π (3.14) with freebies and deals. Here's what you ...

National Pi Day celebrates the mathematical constant "pi." It is celebrated on March 14 because the first three digits are ...

Astro Doughnuts & Fried Chicken: The Shirlington outpost of this doughnut shop hosts a festive mini doughnut decorating event ...

To celebrate Pi Day, CPK is offering rewards members a $3.14 pizza with a minimum purchase of $25 on March 13 and 14. Choose ...