Welcome to Fun with Calendaring. May 4 is now widely known as May the Fourth, a lispy play on "May the Force be with you." March 10 recently evolved into the Nintendo-centric Mario Day, because "Mar10."

And let's not forget the best day in the whole wide world: March 14, otherwise known as Pi Day (because of the eponymous mathematical formula that begins with 3.14). What's so great about that? All you have to do is say it out loud and it becomes "Pie Day."

Hence an abundance of deals and promotions centered around pizzas and baked goods. Below I've rounded up some of my favorites, though this list is by no means complete. There may be local stores and restaurants offering discounts and giveaways as well, so check in with your local pizza joints, bakeries and the like.

Don't want to venture out? Delivery service Postmates is offering free delivery on your next order between now and March 17. Visit the Pi Week collection in the app and use code piweek at checkout.

On Pi Day, the chain is offering any regular-size pizza for $3.14. You'll need to download the Blaze Pizza app, create an account and access the deal in the Rewards section.

This upscale restaurant does deep-dish and flatbread-style pizzas. To get the $3.14 deal, you'll need to dine in on March 14.

Available now through Thursday, you can get a one-topping medium pizza for $3.14 when you purchase a Howie Bread and apply promo code 19PI.

This is no mere one-topping deal; Pie Five is offering any of its specialty pizzas (BBQ chicken, Greek, etc.) for $3.14. However, if you want extras like cauliflower crust or vegan cheese, those will cost you extra.

Tired of pizza chains? Slice connects you with all your local, independent pie joints. If you're a newcomer to the app, you can get $7 off your first order (minimum $15.50) with promo code LOCALPI7.

On Pi Day, the chain will offer $3.14 pizzas, along with various in-store games and giveaways.

Also known as a "BOGO," this deal requires a coupon, which you can find here. It's good only on Pi Day.

If there's a Kroger grocery store near you, stop in on March 14, when various bakery pies will be priced at $3.14 each.

Ending today, meal-delivery service Plated is offering new customers free dessert -- pie or otherwise -- for a year with promo code PiDay. Obviously that means you'll also need a Plated subscription. This promotion is letting you add a dessert to each delivery.

Nope, this has nothing to do with pie. But it's a combo that normally costs over $6, so we'll take it. On Pi Day, use this coupon to get two breakfast sliders, a hash brown and a small coffee for $3.14.

Stop in at your local Whole Foods to get $3.14 off select pies. The varieties will vary by region.

Have you found any other Pi Day deals worth mentioning? Mention them in the comments!

Originally published on March 13, 2019.Update, March 14: Added new promotions.

CNET's Cheapskate scours the web for great deals on PCs, phones, gadgets and much more. Note that CNET may get a share of revenue from the sale of the products featured on this page. Questions about the Cheapskate blog? Find the answers on our FAQ page. Find more great buys on the CNET Deals page and follow the Cheapskate on Facebook and Twitter!

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