National days, ongoing national weeks and months, and global observances for September 20, 2026. Plus historical events and birthdays.
September 20, 2026 celebrates Wife Appreciation Day, plus 5 more. Wife Appreciation Day on the third Sunday in September provides an opportunity for spouses to show appreciation to their wives.
Read the full story →
Caring for children is the bedrock foundation for building strong communities and society as a whole. National Care for Kids Day on September 20 offers an opportunity for you to positively impact a child’s life in a variety of ways both large and small. That’s because we all know there are many ways to be a role model in a child’s life.
Read the full story →
National Punch Day on September 20 goes in several directions. How you interpret those ways is up to you. We, however, will be raising our glass wishing everyone a good day as we sip on our punch and relax.
Read the full story →
It's time for America to stand together in support of our love for String Cheese. Join us as we celebrate National String Cheese Day on September 20. Whether you call it String Cheese, Snack Cheese or Cheese Sticks...there's no denying that you call it delicious!
Read the full story →People born on September 20
Inventor involved in the development of margarine, polyester, paint and varnish remover.
Editor and publisher for literary greats Ernest Hemingway, F. Scott Fitzgerald and Thomas Wolfe.
Blown glass sculptor known for his large-scale sculptures.
Events that occurred on September 20 throughout history
The Walking Purchase concludes, which forces the cession of 1.2 million acres of Lenape-Delaware tribal land to the Pennsylvania Colony. One hundred years later, experts analyzed the deed and concluded it was a forgery.
The Star Spangled Banner is published as a song. The "song" was originally written by Francis Scott Key as a poem Defence of Fort McHenry.
The American Association for the Advancement of Science is created. The Association was the first permanent, national organization that connected all scientific fields and disciplines in the U.S.
The slave trade is abolished in Washington, DC, but allowed to continue. Owning and holding enslaved people remained legal, but buying and selling a slave stopped.
The first FORTRAN computer program runs at IBM. It was the first successful test compilation and execution of a computer program using high-level programming language.
The future King Edward VII of the United Kingdom begins the first visit to the U.S. by a Prince of Wales. The visit lasted until lasted until November 15.
President Chester A. Arthur is sworn in as the 21st President following the death of President Garfield. President James A. Garfield died on September 19, 1881, after complications from an assassination attempt by Charles J. Guiteau on July 2, 1881.
Law & Order: Special Victims Unit premiers on television, airing 594 original episodes in 28 seasons. The series is still shown on NBC.
President George W. Bush declares a "war on terror" during his address to a joint session of Congress and the American people.
Longer-running observances that include this date.
National Construction Appreciation Week
Week
National Security Officer Appreciation Week
Week
National Rehabilitation Awareness Week
Week
National Indoor Plant Week
Week
National Farm Animals Awareness Week
Week
National Surgical Technologists Week
Week
National Farm Safety And Health Week
Week
National Singles Week
Week
Child Passenger Safety Week
Week
National Eczema Week
Week
Self-care Awareness Month
Month
National Suicide Prevention Month
Month
National Recovery Month
Month
Hispanic Heritage Month
Month
National Mushroom Month
Month
National Potato Month
Month
Self-improvement Month
Month
National Preparedness Month
Month
National Library Card Sign-up Month
Month
National Chicken Month
Month
National Coupon Month
Month
Better Breakfast Month
Month
Showing the first 12 — See all months for September.
