Where the World Gathers to Celebrate Every Day


National Quesadilla Day - September 25

NATIONAL QUESADILLA DAY (Dia de la Quesadilla)

National Quesadilla Day on September 25th encourages us to pull a chair up to the table and eat some authentic Mexican food. While it’s not a sandwich or a taco, the quesadilla satisfies snack cravings while also completing a meal.

Typically made with a corn tortilla and filled with cheese, we heat quesadillas until the cheese melts. Then it hits the grill or frier until just crispy. Some people also include other fillings such as cooked sausage, chicken, pork, or beef. And don’t forget the toppings. Fresh tomatoes, salsa, herbs, sour cream, guacamole, or chilies bring a whole other level of flavor to the quesadilla. Don’t forget to finish it with a squeeze of lime. Serve it with an ice-cold beer or a margarita, and the meal is complete.

Families love quesadillas, too! In households around the country, families include quesadillas as a popular mealtime solution. In fact, V&V Supremo recently found one in three people are making quesadillas at least once a week*. Additionally, quesadillas have crossed over from authentic Mexican restaurant menus to more typical chain restaurants. Even higher-end gourmet eateries include them on their menus. Their simplicity allows for easy customization and people of all ages love to eat to them, too.

HOW TO OBSERVE #NationalQuesadillaDay

Can you taste them yet? You will! Whether for a snack or a meal, quesadilla’s hit the spot. Just gather up your favorite ingredients for a quesadilla night. Be sure to include the most essential ingredient – family. Together you can build authentic quesadillas and celebrate the day. As you do, be sure to share the experience with us by using #NationalQuesadillaDay on social media.


V&V Supremo® founded National Quesadilla Day (Dia de la Quesadilla) in 2020 to bring people together to enjoy authentic and delicious quesadillas. One of the only true ways to make an authentic quesadilla is with authentic Mexican-style melting cheese, Chihuahua® Brand Quesadilla cheese made by V&V Supremo. It is the gold standard for quesadillas with its rich, buttery, and flavorful taste.

On September 10, 2020, the Registrar at National Day Calendar proclaimed National Quesadilla Day to be observed on September 25th, annually.

*Footnotes: In April 2019, V&V Supremo® surveyed 1,000 people between the ages of 25-55 in the U.S. who have cooked Mexican food and shopped for Mexican-style cheese in the last six months, and who are familiar with the dish quesadillas.

National Daughter's Day - September 25


When it comes to offspring, National Daughter’s Day reminds of the young women and girls in our lives. On September 25th, spend time with your daughter.

Daughters bring a certain kind of joy into our world. Like all children, they have their own personalities and strengths. As parents, we look forward to discovering the world through their eyes.

Depending on where you live, International Daughter’s Day is observed on the Fourth Sunday in September. Elsewhere the day might be observed on October 1st. No matter when you celebrate, the day provides an opportunity to show your daughter genuine support, encouragement, and love.

In some countries, daughters face a rough start in the world. They are sometimes denied an education, equal employment or even healthcare. Sons are put before them and given priority. Social stereotypes set certain expectations of behavior for daughters including how they dress and behave.

The day offers us an opportunity to be thankful for our daughters and to find ways to ensure daughters around the world have every opportunity to succeed.

HOW TO OBSERVE #NationalDaughtersDay

Share the day with your daughter. Look back on memories or create new ones. Some other ways to celebrate the day include:

  • Send your daughter a card.
  • Take a selfie every year on National Daughter’s Day. Over the years, you will be able to see how much she and you have changed.
  • Donate to an organization that supports educating daughters. For example, Women One provides support to women and girls worldwide. Another is Helping Women Period which supplies feminine products worldwide.
  • Teach your daughter something new. Whether it’s useful or fun, practical or vital, your daughter will appreciate you for it.
  • Learn something from your daughter. Our daughters’ growing catalog of experiences offers us a treasure trove of information that they will gladly share with us.

While you’re celebrating daughters and YOUR daughter, be sure to share your day with us, too. Use #NationalDaughtersDay to post on social media all the ways you celebrate.


National Day Calendar continues researching the origins of this family holiday.

There are over 1,500 national days. Don’t miss a single one. Celebrate Every Day® with National Day Calendar®!



Every year on September 25th, National Comic Book Day honors the art, artists and the stories of comic books. Fans and collectors, readers and artists come together to celebrate the day with events across the country. 

First popularized in the United States, comic books are also called comic magazines. Generally, comic books produce drawn sequential and opposing panels representing individual scenes. Each scene often includes descriptive prose and written narratives. When placed together, the panels form a complete story or a portion of a serial. 

The earliest comic strips, (which later gave birth to comic books), displayed dialogue in bubbles or balloons above characters’ heads. As an art form, the designs can be quite intricate. For example, text, dialogue, personalities, color and imagery all enhance part of a storyline. Over time, these storylines also distinguish eras, artists, genres and themes.

People who collect comic books are known as pannapictagraphist.

The term “comic book” comes from the first book sold as a book reprinted of humorous comic strips. Despite their name, comic books are not all humorous in tone and feature stories in all genres.

One of the earliest known comics printed was The Adventures of Obadiah Oldbuck. The 1842 hardcover comic book became the first known American comic book.

In 1896, a comic-book magazine was published in the United States featuring The Yellow Kid in a sequence titled “McFadden’s Row of Flats.” The 196-page book featured black and white print and measured 5×7 inches. It sold for 50 cents.

In 1933, a comic book, Famous Funnies, appeared in the United States. Many believe the work to be the first real comic book. The reprinting of earlier newspaper comic strips established many of the story-telling devices used in comics.

HOW TO OBSERVE #NationalComicBookDay

This dynamic art form continues to inspire artists and storytellers today. Try sharing your collections and artwork to spread the love. Attend a convention or visit a comic book store. Maybe you’ll discover a great find. Study the art of comic books. Explore the styles and artistry. Read about the history and how the medium changed and evolved.

Learn about the careers of Steve Ditko, John Buscema, Curt Swan or Carmine Infantino. Tell us who your favorite comic book artist or storyteller is.

Pick up a comic book to read and use #NationalComicBookDay to post on social media.

Educators, visit the National Day Calendar classroom for projects designed to include the days in your classroom.


National Day Calendar® continues searching for the source of this artistic day.

NATIONAL BRAVE DAY – Fourth Friday in September


On the fourth Friday in September, National BRAVE Day honors women who lift each other up, rescue each other and make each other BRAVE.

Sometimes just a flutter of encouragement comes in the form of timely guidance from another woman. Other times, the energy is provided through the coordinated, thoughtful efforts of those who identified someone in need. Women empowering women.

Despite varied experiences and backgrounds, women come together across generations to support each other. These small tokens come in many forms. For example, a momentary reprieve over a cup of coffee during a hectic day makes all the difference. A well-written letter of recommendation for a job may change the course of a life. These small tokens strengthen a woman who may have undergone unspoken tragedy or struggles. The opportunities to empower sisters, friends, family, even a stranger are limitless. National BRAVE Day, seeks out tangible ways to encourage women to keep moving forward and to be BRAVE.


Lift up the life of a woman around you. Show your support by organizing a local movie night for women. Provide gift cards at Christmastime for foster children. Create a fundraiser for a perpetual baby shower. Plan a Valentine’s Day Tea for single mothers. Offer to help edit the resumé of someone you know is seeking a new job.  Visit bravefoundation.cc to find out more. Share your ideas and use #NationalBRAVEDay on social media.


The Sweetlife Women founded National BRAVE Day in 2017 in honor of their founder, Kaci Stewart. She has been the catalyst for making a difference in women’s lives. By honoring their founder, Sweetlife Women hopes the observance will be a spark of encouragement to women and a reminder to strengthen one another. Sweetlife Women has been in existence for ten years, and they look for ways to make women BRAVE and give help and guidance where needed. Their annual BRAVE Women’s Conference is every September. Find out more by visiting braveconference.cc

In 2017, the Registrar at National Day Calendar® declared National BRAVE Day to be observed the fourth Thursday in September, annually.



On September 25th, Math Storytelling Day encourages everyone to tell stories through math. This is a day to appreciate all the ways math enhances our daily lives.

The day is a great opportunity to get children excited about math through stories and games. Math stories can include logic, patterns, puzzles and numbers. Tell math jokes and sing songs about math. It’s an excellent way to explore math and promote learning.

HOW TO OBSERVE #MathStorytellingDay

Explore math stories, make up new ones, listen to others tell even more math stories. Terrific ways to celebrate the day include:

  • Math collages
  • Create a math storybook
  • Play a storytelling game
  • Develop math puzzles that tell a story

Use #MathStorytellingDay to post on social media.

Educators, visit the National Day Calendar classroom for ways to incorporate this day into your school calendar.


The Natural Math Community of Naturalmath.com created Math Storytelling Day in 2009. Inspiration struck Dr. Maria Droujkova after reading a blog post by Seth Godin entitled “What should I do on your birthday?” Seth encouraged readers to think bigger than themselves when making birthday suggestions to friends. Dr. Droujkova took the idea to heart and declared Math Story Day would be shared with friends and family on her birthday, September 25th. Not only did Dr. Droujkova share math stories, but the first person to respond, Sue, shared a birthday with Dr. Droujkova, too. 



National Lobster Day on September 25th takes a taste of a seafood favorite. 

The simplest way to enjoy Lobster is boiled then dipped in melted butter.  A couple of favorite lobster recipes include Lobster Newberg and Lobster Thermidor.  It is also the main ingredient in soup, bisque, lobster rolls and salads.

Large lobsters are estimated to be 50 years old.

These marine crustaceans live at the bottom of the ocean. If they avoid the lobster pot, some can live up to 100 years old. Even though we consider them a delicacy today, that wasn’t always the case. In colonial times, the lobster received very little culinary credit. In fact, the pigs and goats ate more lobster than the well-to-do.

While lobsters arrive at our tables bright red, they don’t start out that way. In the ocean, they come in many colors. Some are yellow, green or even blue.

Now that lobsters rank higher on the menu, consider these nutrition facts.

  • Lobsters contain no carbohydrates and 27.55 grams of protein per 1 cup serving.
  • In that same 1 cup serving, there’s 129 calories and 1.25 grams of fat.
  • Eating lobster offers an excellent source of selenium, omega-3 fatty acids, vitamin A, and calcium.

HOW TO OBSERVE #NationalLobsterDay

Celebrate by enjoying a delicious lobster meal at your favorite seafood restaurant. Try cooking a lobster dish at home. It will wow the family and make it a true celebration. Use #NationalLobsterDay on social media.

We’ve found several delicious recipes to try. Let us know which one you like best!

Lobster Thermidor

Lobster Salad

Did you know there’s even a Lobster Newburg Day? Check out this recipe for Lobster Newburg.

Lobster Bisque

According to the Guinness World Records, the largest lobster ever caught was in Nova Scotia, Canada, weighing 44.4 lbs


In 2014, Senators Angus King and Susan Collins of Maine drafted a joint resolution designating September 25th as National Lobster Day. The proclamation recognizes the men and women in an industry as well as the long and rich heritage, from sea to table.



On September 25th, National One-Hit Wonder Day brings back memories while turning up the volume. We honor all the musical artists and chart-topping songs that make them memorable.

These songs make us sing whether we should or not. We know all the words even though we don’t know why. They’re the songs groups of friends will burst out in chorus together and make memories, too. Movie soundtracks love them. Wedding dances love them. We all love them!

The real kicker is, the artists or groups only made us swoon once. After that, they faded away. Some continued with moderate success. Others, however, were never heard of again, musically.

Listed below are just a few of the well-known one-hit wonders from days gone by.

  • 1955 – “Earth Angel (Will You Be Mine)” by The Penguins
  • 1963 – “Six Days on the Road” by Dave Dudley
  • 1968 – “Tip Toe Thru The Tulips” by Tiny Tim
  • 1969 – “Smile a Little Smile for Me” by The Flying Machine
  • 1970 – “One Tin Soldier” by The Original Caste
  • 1970 – “The House of the Rising Sun” by Frijid Pink
  • 1972 – “Hot Rod Lincoln” by Commander Cody and His Lost Planet Airmen
  • 1983 – “Puttin’ on the Ritz” by Taco
  • 1988 – “Don’t Worry Be Happy” by Bobby McFerrin

Do any of these bring back memories?


How many one-hit wonders can you name? Do you know the title and the artist? While you’re exploring your playlists, check out these 10 One Hit Wonders that Stand the Test of Time. Use #OneHitWonderDay to share on social media.


National Day Calendar® continues searching for the source of this musical holiday.



National Research Administrator Day on September 25th recognizes the contributions made by administrators every day.

Research Administrators and Managers serve an important role in supporting research. They assist the faculty and researchers, protect the institution or organization and assure sound stewardship of sponsored research dollars. Many organizations support Research Administration around the world.

Their roles are multifaceted. From oversight of a program to compliance and review, Research Administrators serves every aspect of a project. They keep a project on course. Their management allows other’s to maintain focus on their individual roles as well.

Where do Research Administrators work? The role of a Research Administrator leads research goals in many fields. As expected, these stewards are found in health and medical institutions and research facilities. However, they’re also in demand in higher education from liberal arts colleges to research universities and in the government sectors. Both for-profit and non-profit organizations rely on their knowledge and direction.

Research administration began in the 1940s with a small number of individuals. They’ve now advanced into the modern age with thousands of acknowledged professionals worldwide. Research Administrators and managers provide value and expertise to the global research enterprise.

HOW TO OBSERVE #ResearchAdministratorDay

Take your favorite Research Administrator or Manager to lunch to thank them for all they do. Share their successes. Often their accomplishments help to move research forward. Take photos and post on social media using #ResearchAdministratorDay


National Council of University Research Administrators submitted National Research Administrator Day in August of 2015 to recognize the professionals who diligently work to keep research projects on course.

The Registrar at National Day Calendar® proclaimed the to be observed annually on September 25th.



National Tune-Up Day on September 25th reminds homeowners to prepare for the winter heating season. 

Heating and cooling specialists recommend that homeowners tune up their heating systems every year in advance of seasonal changes. These tune-ups ensure that the systems are operating as efficiently as possible.

A heating system tune-up includes:

  • Removal of dust and dirt in your vents.
  • Checking to make sure all your vents are not blocked or leaking.
  • Ensuring your fuel-jets are working correctly.

Additionally, combustion gases should be analyzed and compared to the specifications of your furnace. The blower access door needs to be checked to assure a tight seal at the furnace. Other necessary inspections include checking fresh air intake grills for blockage and burners for proper ignition and flame. While inspecting the furnace, check the drainage system for blockage and leakage, too. Drains and traps also need to be tested. Plus, the blower wheel, motor, wiring and all filters should also be checked for corrosion and damage. Heating contractors follow an extensive checklist when completing your furnace tune-up.

A heating system tune-up saves energy and reduces heating costs.

HOW TO OBSERVE #NationalTuneUpDay

Enjoy a cozy winter. Tune-up your heating system. You can also give a shoutout to the technicians who provide outstanding service. Share your experiences and use #NationalTuneUpDay to post on social media.


HomeServe USA founded National Tune-Up Day in 2014. They’re a leading provider of home emergency repair service plans.

In 2014, the Registrar at National Day Calendar® declared the home maintenance awareness day to be observed on September 25th, annually.  

There are over 1,500 national days. Don’t miss a single one. Celebrate Every Day® with National Day Calendar®!



Each year on the last Friday in September, National Gay Men’s HIV/AIDS Awareness Day (NGMHAAD) builds awareness and increases education about this disease. The day also focuses on finding ways to eliminate the disease. 

The Centers for Disease Control recommends anyone between the age of 13 and 64 receive an HIV test as part of a routine physical. Those who are sexually active, the CDC recommends testing once per year and sometimes more frequently, depending on risk factors.

The day encourages a more open dialogue between partners as well. Improving understanding of the disease and access to testing helps reduce risk. 

Those with HIV/AIDs need to understand the importance of uninterrupted treatment. Since HIV weakens the immune system, it is important to maintain a vaccine schedule, too. 


Services and opportunities to help raise awareness about HIV/AIDS come in many forms. During this observance and others like it, there are several ways to participate.

  • Learn more about prevention and risk factors.
  • Help eliminate the stigma associated with HIV/AIDS through education.
  • Find a clinic near you for testing.
  • Support research programs.
  • Visit aids.gov to learn more about the event.
  • The cdc.gov offers information and links to services.
  • Visit the aidsinfo.nih.gov for a complete overview of the disease, research and more.
  • Use #GayMensHIVAIDSAwarenessDay to post on social media.


In 2008, the National Association of People with AIDS (NAPWA) launched this observance day to recognize the disproportionate impact of the epidemic on gay men.

On Deck for September 26

National Days

International Days

September 25 History


President Benjamin Harrison establishes Sequoia National Park, the first national park in the United States. Sequoias the largest trees and are among the oldest trees, too.


Columbia University in New York City establishes a school of journalism. The first students began classes on September 30, 1912.


Following a trend he started in 1914, Henry Ford further modifies the workweek to 5 days. In 1914, he raised daily wages to $5. In May of 1926, he reduced the workday to 8 hours. He was one of the first industrialists to create a 40-hour workweek.


One of the world’s first cartoonists dies. Outcault created the Yellow Kid comic series.


A three-way telephone conversation inaugurates the first Transatlantic Telephone Cable System 1 (TAT1). Before, transatlantic cable communications only occurred via telegraph.


Tommy John undergoes ulnar collateral ligament replacement surgery. Performed by Dr. Frank Jobe, the surgery is the first of its kind and becomes known as Tommy John surgery.


Artist Inez Harwood sets world record for the longest tie-dye. The artist dyed 3000 feet of fabric to set the record.

Caramel Sauce
Prep:  5 minutes
Cook:  3-5 minutes
Total Prep:
  5-10 minutes


½ cup packed brown sugar

2 tablespoons cornstarch

½ cup light corn syrup

¼ cup half-and-half cream or evaporated milk

¼ cup butter, cubed

¼ teaspoon salt

1 egg, lightly beaten


Combine brown sugar and cornstarch in a saucepan.

Add remaining ingredients.

Bring to a boil and stir until thickened, about 3 minutes.

Next Week

Week Observances

In the Classroom

September 25 Birthdays

Thomas Hunt Morgan – 1866

The geneticist’s research with the fruit fly led to the chromosome theory of heredity.

Olive Ann Beech – 1904

She and her husband Walter H. Beech founded Beech Aircraft Corporation. Her roles at the manufacturer of business and military airplanes included secretary-treasurer, president, and then chairman of the board.

Phyllis Pearsall – 1906

The author and cartographer founded Geographers’ A-Z Map Company and produced a modern atlas of London.

Barbara Walters – 1929

The television journalist became the first woman to co-anchor an evening news program. Walters launched her television career in 1961 when NBC hired her for the Today show. In 1976, ABC wooed the journalist away with a $1 million annual salary and the opportunity to become the first woman co-anchor.

bell hooks – 1952

Born Gloria Jean Watkins, the outspoken activist wrote several books including Rock My Soul: Black People and Self-Esteem and Feminism is for Everybody: Passionate Politics.

W. Daniel Hillis – 1956

The innovative businessman founded Thinking Machines Corporation. He is a pioneer of parallel processing computers which allows two microprocessors to handle different parts of a complex task.

Keely Shaye Smith – 1963

The broadcast journalist and documentary filmmaker has earned numerous awards for both facets of her career. She began her journalism career at NBC as a correspondent for the show Unsolved Mysteries.

Will Smith – 1968

The accomplished actor got his start as the Fresh Prince in 1988 which led to the television sitcom The Fresh Prince of Bel-Air. Since then, Smith has starred in numerous films including the Men in Black Series, Ali, The Pursuit of Happyness, and Aladdin.

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.
Whether you want to celebrate your favorite mail carrier and flip flops, share your joy for bacon and chocolate cake or enjoy popcorn (our office favorite) on National Popcorn Day, stay in-the-know by signing-up for our e-mail updates, and follow us on Facebook and Twitter. Don’t find yourself unprepared on Talk Like a Pirate Day or Answer the Phone Like Buddy the Elf Day – join us as we #CelebrateEveryDay!