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National Oreo Cookie Day - March 6


Be ready to observe by having your glass of milk handy as it is National Oreo Cookie Day. This day is recognized across the nation each year on March 6th.

The Oreo sandwich cookie is made up of two chocolate disks containing a sweet cream filling and is loved by millions. Since its introduction, the Oreo cookie has become the best-selling cookie in the United States.

The National Biscuit Company (today known as Nabisco) first developed and produced the “Oreo Biscuit” in 1912 at its Chelsea factory in New York City. Today, the block on which the factory was located is known as “Oreo Way.”

  • The name “Oreo” was first trademarked on March 14, 1912.
  • The first Oreo cookies in the United States sold for 25 cents a pound in clear glass topped novelty cans.
  • In 1912, the Oreo Biscuit was renamed “Oreo Sandwich.”
  • In 1948, the Oreo Sandwich was renamed “Oreo Creme Sandwich.”
  • William A. Turnier developed the modern-day Oreo design in 1952 to include the Nabisco logo.
  • Nabisco’s principal food scientist, Sam Procello, developed the modern Oreo cookie filling.

HOW TO OBSERVE #NationalOreoCookieDay

Celebrate the day by taking a poll of your friends and family. Find out how they eat their Oreo sandwich? Do they:

A. Twist them apart, eat the cream center, and put them back together
B. Twist them apart, eat the cream and cookie side first, and cookie only side last
C. Twist them apart, eat the cookie side first, and the cookie and cream side last 
D. Any combination of the above while dunking in milk
E. Eat them whole, sans milk
F. Eat them whole, with milk but no dunking
G. Eat them whole dunking all the way
H. Some other interesting combination the world has never heard about

Grab a glass of milk and a handful of Oreos to enjoy and use #NationalOreoCookieDay to post on social media.


National Day Calendar continues to research the origins of this iconic cookie holiday. However, we suspect an Oreo lover created the day. 

Do you need more cookie days to celebrate? Check out these!

Lacy Oatmeal Cookie Day
Oatmeal Cookie Day
Peanut Butter Cookie Day
Sugar Cookie Day
Chocolate Chip Cookie Day
Pecan Cookie Day
Spicy Hermit Cookie Day
Gingerbread Cookie Day

National Dentist's Day - March 6


National Dentist’s Day on March 6th sets aside a day each year for us to say, “Thank you” to the person who keeps our pearly whites in tip-top order every 6 months. 

In many cases, the day of our dental visit usually has us a bit nervous and sometimes anxious. We would often rather be someplace else than sitting in a dental chair. The dentist is not the person most of us look forward to seeing.  However, when our checkup is done, our teeth are cleaned, the cavities are filled, the broken tooth is fixed, or a toothache is gone, we appreciate what the dentist has done for us.

The dentist is also the person we count on when a toothaches or an emergency occurs. They make sure our oral health isn’t signifying something more serious. Their offices send out reminders, encouraging us to come in for our routine check-ups and schedule us for appointments. They create plans of care and make our smiles look great, too. 

HOW TO OBSERVE #NationalDentistsDay

Take some time to thank your dentist. While you’re at it, schedule your next preventative cleaning. Pick up a new toothbrush and some floss, too! Use #NationalDentistsDay to post on social media.


National Day Calendar continues to research the origins of this healthcare observance. 

National Dress Day - March 6


On March 6th, observe National Dress Day by reflecting on memorable events when we recall dearest memories by what we were wearing.

Dresses have been worn for hundreds of years. Today, they come in a variety of shapes and designs. From long, mini, fit, and flare to the ball gown and A-line, there are many ways to celebrate. Throughout the years, dress designs have changed drastically! However, they still provide a distinctive look and one-of-a-kind fit adding a level of poise and confidence to any event.

On our most important days, we seek out the perfect dress made for the occasion. Whether it is prom, an interview, a first date, or a big wedding day, National Dress Day will give us all a reason to relive some of our dearest memories. We invite you to celebrate National Dress Day with us on March 6th.

HOW TO OBSERVE #NationalDressDay

Share a photo of your favorite dress – whether it be from the past or present – on social media using #NationalDressDay.

Visit and follow @nationaldressday on Instagram to participate in our countdown. Don’t forget to wear your favorite dress or post your favorite dress memory using #NationalDressDay on March 6th.


ASHLEYlauren founded National Dress Day to honor all of the ways dresses help us celebrate the significant moments of our lives. The Registrar at National Day Calendar® declared National Dress Day in October of 2016.

About ASHLEYlauren
Since the launch of ASHLEYlauren in 2011, fashion designer, businesswoman, and founder of TEAMfabulous™, Ashley Lauren Kerr has recognized the power of fashion. Immersed in design, intrigued by the latest trends, and influenced by classic silhouettes, she takes great pride in creating dresses that fit a unique style and personality. It is Ashley Lauren’s passion for all things fabulous that motivates her to design a dress line that is both timeless and modern. Follow ASHLEYlauren on Instagram @ashleylaurenme for all things TEAMfabulous™, including gorgeous dresses!

National Frozen Food Day - March 6


National Frozen Food Day recognizes the preservation feat that freezing fruits, vegetables, and meats have been on modern life. Celebrated each year on March 6th, the observance takes a look at how frozen food impacts our daily lives, its history, and how far it has come.

Flash Freezing

The frozen food aisle is as standard in the grocery store today as ATMs and self-checkouts. It’s also a convenience we don’t give a second thought to unless the power goes out. The American inventor, entrepreneur, and naturalist Clarence Frank Birdseye II receives credit for developing the method for the flash freezing preserve flavor and quality of foods. Today, we see his name in nearly every canned goods and frozen food aisle in every grocery store in America. 

While food preservation by freezing wasn’t new, Birdseye discovered the key was freezing the food quickly. Flash freezing forms small ice crystals, which prevent the cell walls from bursting. Large ice crystals turn the food to mush.

Birdseye applied for many patents, but one of his earliest is from 1927 for a process to flash freeze foods. Consider that in 1930 only 8 percent of American households had refrigeration units in their homes. A frozen food patent in 1927 was a visionary step in a long chain of events to make frozen foods a marketable product.

In 1930, the Birdseye label, owned by the General Food Corporation, began selling 26 products to 18 retails stores in and around Springfield, Massachusetts. Clarence Birdseye continued his work with General Foods Corporation.

Birdseye died on October 7, 1956, but the name and products he inspired continue today.

Frozen Dinners

In 1954, Swanson introduced the first frozen dinners. At the time, the consumers knew them as TV dinners since they were designed to be eaten in front of the newly popular television. Special folding trays, called TV trays, stored conveniently away when not in use. But when dinner time rolled around, they unfolded for each person’s TV dinner. Everyone gathered around the television to enjoy their meal. These pre-cooked meals only needed to be heated through in the oven to be ready to eat. No cooking skills were required. Pre-heat the oven, cook for the required length of time and eat.

The invention of the microwave also changed the types of frozen foods and just how convenient these items can be. Over the years, other frozen foods have developed to meet consumer demand. Various family-sized meals, health conscience meals, and even organic meals have hit the markets in recent years.

HOW TO OBSERVE #NationalFrozenFoodDay

Take a trip to your local grocery store and find one of your favorites in the frozen food aisle!! Use #NationalFrozenFoodDay to post on social media.


President Ronald Reagan signed Proclamation 5157 in which it said: “Now, Therefore, I, Ronald Reagan, President of the United States of America, do hereby proclaim March 6, 1984, as Frozen Food Day, and I call upon the American people to observe such day with appropriate ceremonies and activities.”

National White Chocolate Cheese Cake Day - March 6th


National White Chocolate Cheesecake Day on March 6th offers another way to celebrate one of our favorite desserts. 

Cheesecake is a sweet dessert that is a mixture of soft fresh cheese, cream cheese or cottage cheese, eggs and sugar on a crust made from crushed graham crackers, crushed cookies, pastry or sponge cake. Cheesecakes can be prepared baked or unbaked and are often served topped with fruit, chocolate or whipped cream. There are many flavors in which cheesecakes can be prepared. However, this day honors the white chocolate cheesecake

Now, white chocolate is not chocolate in the strictest sense. It doesn’t contact cocoa solids. During the process of manufacturing chocolate, the dark-colored solids of the cocoa bean separates from the fatty content. With milk or dark chocolate, these solids are reincarnated. However, when making white chocolate, these solids don’t return to the mixture. Additionally, white chocolate contains less caffeine than its darker counterparts. It also loses some of the health benefits as well since it tends to contain more fat and sugar. Add it to an already rich dessert and, well, decadence should be expected. 

HOW TO OBSERVE #WhiteChocolateCheesecakeDay

Make a white chocolate cheesecake to celebrate. We’ve provided several recipes to try. Or, visit your favorite bakery and give them a shoutout!

White Chocolate-Raspberry Cheesecake Bars
Fluffy White Chocolate Cheesecake
No-Bake WhiteChocolate Cheesecake
White Chocolate Raspberry Cheesecake Cookies

Use #WhiteChocolateCheesecakeDay to post on social media.


National Day Calendar continues to research the origins of this cheesecake holiday. Are you looking for more delicious cheesecake celebrations? Check these out!

On Deck for March 7, 2021

National Days


March 6th Celebrated (and Not So Celebrated) History 2021

Chemist Dimitri Mendeleev publishes his first paper developing a new periodic table. Mendeleev’s table arranges the elements based on atomic mass, similar to chemist John Newlands, but he corrects some of Newland’s errors. By this time, only 60 of the over 100 elements we know today were discovered.


Clarence Birdseye begins test marketing prepackaged frozen food in Springfield, Massachusetts as Birds Eye Frosted Foods.


Peter Hodgson introduces Silly Putty as a toy for the first time.


“My Girl” by The Temptations hits the U.S. singles charts. Written by Smokey Robinson, the single is the first hit for the Motown Records recording label.

Recipe of the Day

Peanut Butter Cookies
Prep: 15 mins
Servings: 4 – 5 Dozen






2 lg. eggs
3 cups flour
1 1/4 cup brown sugar
1 1/4 cup sugar
1 1/2 cup chunky peanut butter
1 cup butter
1 tsp baking soda
1 tsp baking powder
2 tsp vanilla extract


Preheat oven to 350 degrees.

Mix butter, peanut butter and sugars until creamy. Next eggs beating while mixing in flour. Add in remaining ingredients being sure to continue mixing.

Roll into balls first and then roll in granulated sugar. Flatten balls while using a fork for the traditional pattern of crisscrosses.

Place cookies on non-greased cookie sheet baking for 6-7 minutes. Remove from oven, using a flat spatula move cookies to cooling rack to help keep them soft and chewy.


With a special shout out to the Ressler brothers with the inspiration for these delicious cookies!

March 6th Celebrated (and Not So Celebrated) Birthdays 2021
Ed McMahon – 1923

Johnny Carson’s long-time co-host began his career in entertainment as host of a late-night talk show. Known for his funny antics, McMahon also hosted the talent show Star Search.

Sarah Caldwell – 1924

At the age of 26, Caldwell became the first woman to direct a professional opera company. She would advance her career even further when she became the first woman to conduct the New York Metropolitan Opera in 1976. She was a force to be reckoned with, adventurous and determined.

Gordon Cooper – 1927

One of the original Mercury astronauts, Cooper’s first mission to space was aboard Faith 7 on the final flight of the Mercury Project on May 15, 1963. His second flight was aboard Gemini 5 with astronaut Pete Conrad on August 21, 1965.

Gabriel Garcia Marquez – 1928

In 1982, the Colombian author was awarded the Nobel Prize for Literature. Some of his best-known works include One Hundred Years of Solitude and Love in the Time of Cholera.

John Philip Sousa – 1932

Known as the March King, the U.S. Marine Band leader composed 136 marches and recorded more than 400.

Merle Haggard – 1937

The legendary country music singer-songwriter is known for some of country music’s classics such as “Mama Tried,” “Today I Started Loving You Again,” and “Workin’ Man Blues.”

Valentina Tereshkova – 1937

In February of 1963, Tereshkova began training in the Soviet space program. She was selected for a dual mission with cosmonaut Valeri Bykovsky, and on June 16 became the first woman in space. She orbited the Earth in the Vostok 6 while Bykovsky, who launched two days earlier, orbited in Vostok 5. Tereshkova orbited a total of 48 times around the Earth for 71 hours.

Maurice Ashley – 1966

In 1999, Maurice Ashley became the first black chess player to earn the title of grandmaster. He was 33 years old and learned the game from his older brother. Today, the grandmaster continues his love of the game and is also a commentator, coach, consultant, and more.

Shaquille O’Neal – 1972

Known as Shaq, he played 19 years in the National Basketball Association with six different teams. During his career, Shaq brought home four championship rings, three with the Los Angeles Lakers and one with the Miami Heat.

Notable Mentions

Elizabeth Barret Browning – 1806
Lou Costello – 1908
Wes Montgomery – 1927

About National Day Calendar

National Day Calendar® is the authoritative source for fun, unusual and unique National Days! Since our humble beginnings on National Popcorn Day in 2013, we now track nearly 1,500 National Days, National Weeks and National Months. In addition, our research team continues to uncover the origins of existing National Days as well as discover new, exciting days for everyone to celebrate.

There’s a celebration for everyone. While National Road Trip Day satisfies the itch to wander, many pet days let us share our love of animals. National 3-D Day and National Astronaut Day honor the advancement of technology, too. Every food day you can imagine (National Avocado Day, for example), will keep you celebrating, also!

Be sure to stay in the know by signing up for our e-mail updates. Also, follow us on Facebook, Twitter, and Instagram

Our Ambassador Program is another way #CelebrateEveryDay®! Whether you become an ambassador or follow one of the savvy ambassadors, their fun videos and posts will keep you prepared for every holiday.

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