Be sure to mark your calendar for these awesome freebie holidays!

March 4: National Pancake Day

Separate from International Pancake Day, every March 4th IHOP offers a free short stack of three buttermilk pancakes. Offer is limited to dine-in guests visiting between 7 a.m. and 10 p.m. on that day, while supplies last.

March 20: First day of Spring

Rita's offers a free limited edition cup of Italian ice.

March or April: Ben & Jerry's Free Cone Day

Since 1979, Ben & Jerry's stores offer a free ice cream scoop every year. The day happenssometime during March and April, so you have to stay tuned for the company's announcement.

April 15: Tax Day

As a reward for making your federal tax deadline of April 15th, several business offer you freebies:

Curly fries from Arby's
Free popcorn at AMC Theaters
Free chips and queso or salsa at California Tortilla
2 cinnabon cinnamon bites (6pm-8pm) at Cinnabon
Small coffee (during breakfast hours) at McDonald's
Birthday cake cookie from Great American Cookies
Entree from Hard Rock Cafe, but you have to win it by singing a song on stage
Shredding of up to five pounds of documents courtesy of Office Depot
Water-based massage session from Hydromassage including locations at participating Planet Fitness

April 22: Earth Day

On Earth Day, you can:

Receive free plantable bookmarks for kids at Pottery Barn.
Score a free organic milkshake at Evos stores.
Enter a National Park for free (Note: Additional free entrance dates are Martin Luther King Jr Day, Presidents Day weekend, National Park Service Birthday, National Public Lands Day, and Veterans Day.)

April 26: National Pretzel Day

For over three decades and by U.S. Congress decree people celebrate National Pretzel Day. Every April 26th, Philly Pretzel Factory, Pretzelmaker, and Snyder's of Hanover give out free pretzels. In 2014, Pretzelmaker gave away 65,000 free pretzels.

First Saturday in May: Free Comic Day

Held the first Saturday in May, Free Comic Day is the day in which participating comic book stores across North America give away free comic books. Most stores give at least one free comic book, but some are more generous than others. Check with your local retailer for their Free Comic Day offerings.

Second Saturday in May: Mother's Day

Moms work very hard all year round, so they deserve to get free stuff on their day:

Denny's: Free dessert with 2 entrees
First Watch Cafe: Free box of chocolates for dine-in Moms
Hooters: Free meal for mom, up to $10, with any drink purchase
McCormick & Schmicks: Chocolate-covered strawberry for every dine-in mom
Shoney's: Free slice of strawberry pie with buffet or entree
Starbucks: Each year Starbucks offers various special discounts
TCBY: Free 6 ounce cup of frozen yogurt
T.G.I. Friday's: Free appetizer (with app download)
The Pasta House: Free meal for moms with entree
Tony Roma's: Free meal for dine-in moms
Zoe's Kitchen: Free piece of Yaya's Chocolate Cake with entree

Sometime in May: Häagen-Dazs Free Cone Day

Not to be outdone by Ben & Jerry's, Häagen-Dazs offers a free cone from 4 p.m. to 8 p.m. at over 250 locations in the U.S. This day happens usually within the first three weeks of May, so be on the lookout for the official company announcement. Get there early, as in 2012 over 41,300 free scoops were served in New York City alone! Vanilla is the flavor that usually runs out first.

First Friday in June: National Donut Day

Celebrate the first Friday of June with a free donut at Krispy Kreme, LaMar's Donuts, and Shipley Do-Nuts. Places requiring a purchase are Tim Hortons Cafe & Bake Shop, Dunkin' Donuts, and Cumberland Farms. Also, check your local donut shop because several, such asRegal Bakery in Honolulu, will honor this day.

June 10: National Iced Tea Day

Enjoy a cold iced tea every June 10th to cool down during a hot summer. Two retailers that consistently participate in this day are 7-Eleven (free Snapple tea) and Teavana (free tea with purchase).

June: Father's Day

Every third Sunday of June, the King of the House can get freebies at:

Bucca di Beppo: Free cannoli for dine-in dads.
Einstein's Brothers Bagels: BOGO sandwich
Hooters: Buy 10 wings, get 10 free for dads
Spaghetti Warehouse: Free original recipe spaghetti or lasagna
TCBY: Free 6 ounce cup of frozen yogurt
T.G.I. Friday's: BOGO with the purchase of two beverages

July 11: 7-Eleven Day

Every July 11th 7-Eleven offers free 7.11-ounce Slurpee drinks.

July 11: Cow Appreciation Day

After you grab free 7-11 Slurpee, dress up as a cow and head to a Chic-fil-A restaurant for a free meal. Yes, Cow Appreciation Day is a real thing.

September 17: Free queso day

Head over to Mae's Southwest Grill for a free bowl of queso (11am-9pm).

September 19: Talk Like a Pirate Day

Go the Krispy Kreme and get your free donut by talking pirate to the cashier. You can also get a free piece of fish from Long John Silver's.

September 29: National Coffee Day

Every September 29th coffee retailers offer a free small coffee. Some companies that participate are Dunkin' Donuts, Krispy Kreme, Lamar's Donuts, and McDonald's. Other retailers who offer BOGO are Eintstein's Bros Bagels, Noah's Bagels, and Peet's Coffee.

November 11: Veteran's Day

During this holiday in November, veterans and active duty military can get free meals at:

Applebee's
Bar Louie
BJ's
California Pizza Kitchen
Chili's
Claim Jumper
Denny's
Famous Dave's
Friendly's
Golden Corral
Hurricane Grills & Wings
IHOP (free pancakes)
McCormick & Schmick's
Olive Garden
On The Border
Perkins
Red Robin
Sizzler
Texas Roadhouse
T.G.I. Friday's

Free coffee at:

Einstein Bros Bagels
Krispy Kreme (donut & coffee)
McDonald's
Noah's Bagels
Roy Rogers
Starbucks
Tim Hortons (free donut)

Free appetizer at:

Carrabba's
LongHorn (Texas Tonion & non-alcoholic beverage)
Outback (Bloomin' Onion and beverage)
Red Lobster
Ruby Tuesday

And many more! (See also: Big List of Military Discounts)

NOTE: Most locations will ask for valid ID.

Sometime in December: Free Shipping Day

Christmas shopping procrastinators rejoice! On Free Shipping Day, participating online retailers provide you free shipping for your purchase. This day happens sometime in December so stay tuned.