The U.S. government recognized March 14 as National Pi Day in 2009.
On March 14, people across the globe will be celebrating Pi Day, including Blaze Pizza.
Ready to dig in?
Blaze's Pi Day celebration is back: Eat $3.14 pizzas all day at select Blaze Pizza locations, and you'll get a $3.14 pizza reward if you download the pizza chain's app before Thursday.
Lucky for Canadians, one of those spots is Pizza Pizza. The promotion is through Thursday for carry-out orders only.
Meanwhile, you can use the code 317445 to get $3 off any large pizza, according to USA Today.
Hungry Howie's : Purchase any Howie Bread at regular price and get a medium one-topping pizza for $3.14. Valid for pick up, dine-in and delivery (but not valid with Grubhub, Postmates, UberEats, Doordash).
Bojangles: Get three Sweet Potato Pies for $3.14 Thursday while supplies last at participating locations.
7-Eleven: With the 7Rewards app, get one slice of pizza for 50 cents or buy a whole pie in-store and get 314 7Rewards points.
Thursday, March 14, is Pi Day 2019, and plenty of restaurants have special pie and pizza deals. Get any 14-inch specialty thin crust pizza and get one 10-inch for $3.14.
Kneaders Bakery, 1821 N. Rock Road: Offering $1.50 slices of pie with purchase on Thursday. You'll need a coupon (print it out or show it on your phone) available on its website. To that end, Schlotzsky's is celebrating by giving away a free bag of chips with the purchase of any entree.
The new west-side Cheddar's doesn't open until Monday so it will miss the Pi Day deal this year. Slices of cheesecake are $3.14, plus a trip to the sauce bar for $0.86 ($4 total).