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National Chocolate Cupcake Day - October 18


National Chocolate Cupcake Day on October 18th annually celebrates the sweetness of small chocolate cakes. With a dollop of frosting, one sweet serving satisfies chocolate and cake lovers!

Cupcakes have also been called:

  • Fairy Cakes
  • Patty Cakes
  • Cup Cakes (different from Cupcakes (one-word))

Cupcakes can be traced back to 1796 when a recipe notation of “a cake to be baked in small cups” was written in American Cookery, by Amelia Simmons. The earliest known documentation of the term cupcake was in 1828 in Seventy-five Receipts for Pastry, Cakes, and Sweetmeats in Eliza Leslie’s Receipts cookbook.

Bakers initially baked their cupcakes in heavy pottery cups. However, bakers today use a plethora of tools at their fingertips. Some still use individual ramekins, small coffee mugs, large teacups, or other small ovenproof pottery-type dishes for baking their cupcakes. Of course, the most common cupcake tool is the muffin or cupcake pan. This handy tool includes multiple cups in one device.

Chocolate cupcakes come in a variety of flavors, too. Of course, there’s always the standard chocolate cupcake. But why stop there on a holiday?

  • Chocolate caramel cupcakes satisfy that extra cry for sweetness.
  • Peanut butter chocolate cupcakes are the snacker’s delight.
  • Get devilishly good cupcakes with Devil’s Food.
  • Cool things off a bit with chocolate mint recipes, too.
  • And you can’t forget chocolate orange cupcakes. Citrus brightens the flavor of any chocolate recipe.

HOW TO OBSERVE #ChocolateCupcakeDay

Celebrate by trying one of the following tempting recipes while watching an episode of the Food Network reality-based competition show, Cupcake Wars. Remember to invite friends or family over to share. That’s how we like to #CelebrateEveryDay!

Cream Cheese Chocolate Cupcakes
Chocolate Fudge Cupcakes with Peanut Butter Frosting
Super Easy, Super Moist Chocolate Cupcakes
Chocolate Cream Filled Chocolate Cupcakes
Dark Chocolate Cupcakes

Use #ChocolateCupcakeDay to post on social media.


National Day Calendar® continues researching the origins of this sweet cake holiday.

National Exascale Day - October 18


On October 18 (1018), National Exascale Day celebrates the scientists and researchers who make breakthrough discoveries in medicine, materials sciences, energy and beyond with the help of some of the fastest supercomputers in the world.

We like to say that National Exascale Day celebrates those who keep asking what if, why not, and what’s next — with the advanced technology to attain the answers.

This era in technology will have a profound impact on nearly every aspect of our daily lives. It will impact everything from healthcare and manufacturing to understanding new energy sources and the origins of the universe. Exascale is defined as a quintillion computations per second. For perspective, if all 7.7 billion people on earth each completed one calculation per second, it would take over 4 years. An exascale computer can complete a quintillion computations in 1 second.

So what, you may ask?

The “so what” is that when science discovers and innovates in less time, it realizes good outcomes sooner. More people survive cancer. Populations deplete fewer natural resources from the earth. More people have healthy food on their tables. And so on.

HOW TO OBSERVE #NationalExascaleDay

Celebrate the geeks, gurus, and geniuses who keep asking the big questions and are changing the world! To get you started, here are a few ideas:

  • Hug a scientist.
  • Encourage your teams to recognize the great work of a colleague, researcher or anyone who is using advanced computing to change the world.
  • Tell the world via your organization’s website, blog, and media channels how your org views the impacts of Exascale computing on the future.
  • Take a scientist or science teacher for lunch.
  • Celebrate with your teams – ice cream social, picnic lunch, or special recognition ceremony.
  • Keep science alive in your schools by sponsoring a science fair.

Use #NationalExascaleDay to share on social media. Keep reading to learn even more!

We’ve included a bit more information below for your curious-er types.

Fun Factoids
  • Exascale computing means a computing system that can perform at least one exaflops ― or one quintillion (a billion billion) calculations per second.
  • It would take 40,000 years for one quintillion gallons of water to spill over Niagara Falls.
  • The Milky Way galaxy is 1 quintillion kilometers wide.
  • The human brain contains 100 billion neurons – to reach one quintillion would require 10,000 people!
  • Exascale computers will be roughly a million times more powerful than the average laptop we use every day.
A Historical View into the Next Inflection Point

The advent of the Internet allowed business and industry to collect data like never before. Fast forward, data growth continues to drive organizations of all sizes to data-intensive computing and digital transformation. In response, AI, analytics, IoT, simulations, and modeling workloads are all converging into one business-critical workflow – a workflow that must operate at an extreme scale and in real-time.

So, data growth, converging workloads, and the imperative for digital transformation mean organizations are asking completely new questions. And they need new capabilities to answer those questions. Exascale computing completely rethinks how technology and people come together to answer today’s biggest questions ― and even bigger ones tomorrow.

What Makes Now an Exascale Era™?

Exascale is more than a speed milestone or a system size. Exascale is new workloads brought on by new questions intersecting with new compute capabilities to create a major technological shift.



CRAY, a Hewlett Packard Enterprise company, founded National Exascale Day in 2019 to celebrate the people who keep asking, “what if, why not, and what’s next?” — with the advanced technology to attain the answers. The day also celebrates a new era of supercomputing that will enable breakthroughs in disciplines benefitting all of humankind.

International Legging Day - October 18


Get geared up for International Legging Day every October 18th. Although it’s a year-round staple, when temps drop in the fall, it’s officially legging season!

Once a necessity providing an added layer of warmth, the legging is now an iconic style combining comfort and fashion. Leggings truly set a trend in the 1950s and ‘60s as a standard wardrobe piece and workout essential.

Over time, breathable materials, textures, designs, and prints ushered in the undeniable era of leggings. Now, modern-day leggings are feats of engineering designed to enhance your workout. While they continue to be a gym essential, legging styles are now so versatile that they’re widely acceptable to wear as pants. In a wide range of looks, comfortable leggings offer something for everyone.

As the popularity of athleisure skyrockets, so too does the mass appeal of the legging. Clearly, this comfortable, curve-hugging style hasn’t just revolutionized what we wear to the gym—it’s revolutionized what we wear everywhere! The versatile legging has sparked a global revolution that encourages women to embrace comfort and stay active.


Put your best legging forward! Proudly wear your favorite pair and go shopping for more. Consider this your chance to break the dress code—whether it’s at the office or that five-star restaurant you’re dining at tonight. After all, feeling comfortable is what the day’s really all about. Share your favorite looks and styles by using #LeggingDay on social media on October 18th.



Fabletics founded International Legging Day in 2019 to celebrate the year-round style staple during the official legging season.



National Clean Your Virtual Desktop Day encourages everyone to take time to organize their virtual desktop. The observance takes place on the third Monday in October.

Remember when your computer was new and the desktop was clean and organized? The trash file was empty. The only files on the computer were the ones the manufacturer created. No viruses. No documents. And your computer was fast, too. You were ready to create, design and program. 

When is National Technology Day?

Question Mark 4 mulitple

A clean and organized space offers fewer frustrations. Everything is in its file and you know where to find it. Archive old files. Create shortcuts. This will help your computer run faster and help you find them more quickly. Pin favorite apps to the start menu.  

Name photos and put them on a thumb drive. Clean out that email, too. Delete unused icons. You can do the same thing with your phone. Are there games you don’t play anymore? Eliminate them. Make sure your virus protection is up to date and run it. Make sure it runs on a regular schedule. 

HOW TO OBSERVE #CleanYourVirtualDesktopDay

National Clean Your Virtual Desktop Day focuses on organizing! So, neaten up your desktop by deleting unneeded items and sorting the rest into folders. Share your tips. For those who are tech-savvy, offer to help others. For example, if Grandma complains that her computer is slow, you owe it to her to help her out. Show her how to keep her computer running smoothly. Use #CleanYourVirtualDesktopDay to post on social media.


 The Personal Computer Museum located in Brantford, Ontario Canada created the observance to celebrate technology while becoming more adept at using it and keeping it running smoothly.  



Annually, National No Beard Day on October 18th celebrates the cleanshaven among us. The smoother the face, the bigger the celebration!

Whether you have had your beard for years or it is relatively new for you, this is the day to shave it off and go smooth. Perhaps your partner doesn’t like your beard, or you just haven’t shaved it off for years. No Beard Day is the day to see what you look like without it.

Achieving a close, kissable shave is a lost art that faded with a generation that had the first color televisions installed. Consider investing in the tools your grandfather or possibly your great-grandfather used – either a safety razor or a straight razor will give you the closest shave along with a natural bristled shaving brush and shaving soap. More care and time may be required, but the results are well worth the effort.

HOW TO OBSERVE #NationalNoBeardDay

Shave and post before and after photos on social media using #NationalNoBeardDay.

You can also explore beard styles in preparation for growing your beard out again. Check out these 7 Popular Beard Styles Throughout History.


National Day Calendar® continues researching the origins of this fashionable holiday. However, next month is No Shave November and since we are halfway through October, indications suggest we start there.

October 18th Celebrated (And Not So Celebrated) History


Boston Shoemakers establish the first American labor organization. They created the trade union to maintain standards while protecting their interests with a qualified and practiced workforce.


Author Herman Melville publishes the novel The Whale which would later be named Moby-Dick.


American Telephone and Telegraph Company opens the first long-distance telephone line between Chicago and New York opens. The ceremony included Chicago Mayor Hempstead Washburne and New York Mayor Hugh Grant exchanging greetings as well as both offices playing the Star Spangled Banner for the receiving office and their audiences.


The British Broadcasting Company (BBC) is established.


The French space program launches the first cat into space. The black and white tuxedo stray named Félicette spent 15 minutes in space and returned to Earth 15 minutes later.


Astronauts Christina Koch and Jessica Meir became the first all-women spacewalk. During their spacewalk, the astronauts took a call from President Donald Trump.

Recipe of the Day

Chocolate Pudding
Prep:  10 minutes
Cook:  12 minutes
Total Prep:  22 minutes
Servings:  4


2 large egg yolks
2 Tablespoons cornstarch
2 cups whole milk, divided
1/2 cup sugar
1/4 cup unsweetened cocoa powder
1/4 teaspoon salt
2 teaspoons pure vanilla extract


Whisk egg yolks in a medium bowl until light yellow and they increase in volume. Whisk in cornstarch and 1 cup of milk. When the mixture is smooth, set aside.

In a medium saucepan, bring sugar, cocoa, salt, remaining 1 cup of milk just to a simmer over medium-high heat while whisking.

Remove from the heat.

Add small amounts of the cocoa mixture to the egg mixture while whisking constantly.

Once both mixtures have been combined, pour back into the saucepan and heat over medium-high while whisking constantly.

Bring to a full boil.

Reduce to a simmer and continue to whisk until the pudding thickens.

Remove from heat and stir in vanilla extract.

Pour into a bowl and cover with plastic wrap, allowing it to come into complete contact with the pudding’s surface.

Chill for one to two hours.

October 18th Celebrated (And Not So Celebrated) Birthdays

Frederick August Otto Schwarz – 1836

The German immigrant created magic long before Walt Disney ever did. In 1861, Schwarz and his brothers opened their first toy store in Baltimore Maryland. Schwarz would open a second store in New York City named Schwarz Brothers – Importers. Over the years, the store became a destination for millions of toy lovers around the world. Early in the 20th century, the store was renamed FAO Schwarz and is the oldest toy store in the United States. In 2012, Frederick Schwarz was elected to the Toy Industry Hall of Fame.

Harry Yarnell -1875

Prior to World War II, the naval officer proved the vulnerability of Pearl Harbor during the annual Grand Joint Army and Navy Exercises. He served more than 51 years with the U.S. Navy and retired from service in 1942 but returned to duty several times during World War II.

Lina Radke – 1903

In 1928, Radke raced for Germany and won the first Olympic 800 meter race for women. It was the first year the Olympics allowed women in athletic events. Held in Amsterdam, the race was considered controversial because popular and medical opinion believed women too frail for competition and athleticism. Following the race, reports of collapsing runners, runners dropping out of the race, blazed the headlines. However, despite photographic and film evidence proving none of the 9 runners dropped out of the race or collapsed, the news refused to report the actual headline – that Radke won and broke the world record. Tragically, the race would be removed from the Olympics and would not return until the 1960 Olympic Games in Rome.

​Isabel Briggs Myers – 1897

Briggs Myers teamed up with her mother Katharine Cook Brigs to develop what became one of the most widely used personality inventories. The self-reporting questionnaire called Myers-Briggs type Indicator (MBTI) measures 16 personality types as well as other indicators and offers tools for understanding.

Trixie Worsley – 1921

Not only was Worsley the first Canadian woman to become a computer scientist, but she may have also been the world’s first woman to earn a doctorate in computer science.

Chuck Berry – 1926

The Grammy-winning and Rock and Roll Hall of Famer, Chuck Berry influenced generations of musicians and artists. With a slew of number one hits, Berry ushered in the era of Rock & Roll. His first hit song, “Maybellene,” was followed by “Roll Over Beethoven,” “Brown Eyed Handsome Man,” and “Johnny B. Goode,” along with several other popular songs in between. He continued to perform well into the 1990s.

Mike Ditka – 1939

The former professional football player led the Chicago Bears as head coach for 10 years. During his tenure, he led the Bears to a Super Bowl win in his third season. He continued to lead the Bears in winning seasons but they didn’t appear in the Super Bowl again under Ditka’s leadership.

Zac Efron – 1987

The singer and actor rose to popularity thanks the Disney hit High School Musical. He continues to earn Teen Choice and People’s Choice awards. In 2017 he played Phillip Carlyle in The Greatest Showman. His most recent production is a travel web series called Down to Earth with Zac Efron.

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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