Source-backedFixed AnnualIn-depth guide
National Salmon Day
Chicken of the Sea-created launch material establishes National Salmon Day as an annual October 8 observance beginning in 2015; current Chicken of the Sea material continues to use October…
Observance library
Browse all researched observances
2,411 researched observances. Search for a specific name or known alternate name.
Source-backedFixed AnnualIn-depth guide
National Salvation Day of the Azerbaijani people
Current Azerbaijani official sources reproduce the Labor Code listing June 15 as National Salvation Day of the Azerbaijani people and a day off; official history connects the date with the…
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National SAN Architect Day
National Day Calendar states that KCI, Inc. founded/submitted National SAN Architect Day and that the Registrar proclaimed it to be observed annually on May 3.
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National Save the Eagles Day
The U.S. Fish & Wildlife Service National Conservation Training Center states that January 10 is designated National Save the Eagles Day. Creator, launch year and exclusive current organize…
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National Save Your Hearing Day
CDC/NIOSH explicitly identifies May 31 as National Save Your Hearing Day; longstanding professional materials also use the May 31 observance.
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National Savings Day
Capital One states that it founded National Savings Day and celebrates it yearly on October 12; National Day Calendar records annual observance beginning in 2017.
Source-backedRule Based AnnualIn-depth guide
National School Picture Day
Lifetouch states that it declared National School Picture Day in 2019 and set it for the second Thursday in September each year.
Source-backedFixed AnnualIn-depth guide
National Science Day (India)
India’s Department of Science and Technology states that National Science Day is celebrated every year on February 28 to commemorate the Raman Effect; Government of India 2026 material conf…
Source-backedEdition SpecificIn-depth guide
National Science Week
National Science Week’s official history states that ASF Ltd, ABC and ASTA pitched the concept in 1996, the program was established in 1997 and has been held in August since 2002; the offic…
Source-backedRule Based AnnualIn-depth guide
National Scrapbook Day
Creative Memories states that the first Saturday in May is National Scrapbook Day and continues to publish current NSD materials; its history identifies Creative Memories as the originator.
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National Screenwriters Day
ScreenwritingU announced National Screenwriters Day for January 5 and identifies itself as the creator; current observance registry material retains the January 5 date.
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National Seat Belt Day
Volvo Car USA’s November 14, 2019 launch release identifies the first National Seat Belt Day and names Volvo, Uber and the Governors Highway Safety Association as launch partners, with Nove…
Source-backedEdition SpecificIn-depth guide
National Seat Check Saturday
NHTSA identifies National Seat Check Saturday as the closing Saturday of Child Passenger Safety Week. The agency lists September 26 for 2026 and different dates in other editions, so the da…
Source-backedFixed AnnualIn-depth guide
National Selfie Day
The official National Selfie Day site states that DJ Rick McNeely created National Selfie Day on June 21, 2014 and identifies him as the founder.
Source-backedRule Based AnnualIn-depth guide
National Share the Warmth Day
One Warm Coat states that National Share the Warmth Day is celebrated annually on the third Tuesday of October; its 2026 campaign page resolves that rule to October 20, 2026.
Source-backedFixed AnnualIn-depth guide
National Shoe Donation Day
DSW/Designer Brands and Soles4Souls identify August 15 as National Shoe Donation Day; the first named observance was in 2025 and current partners continue to use the date.
Source-backedFixed AnnualIn-depth guide
National Short Film Day
Film Movement states that it founded National Short Film Day in 2019 and first observed it on December 28, 2019; National Day Calendar records the annual December 28 rule and the Lumière-an…
Source-backedFixed AnnualIn-depth guide
National Shortbread Day
Walker’s Shortbread states that National Shortbread Day is celebrated on January 6 every year. The current page title is treated as a Walker’s-branded search alias, not as evidence of a dis…
Source-backedFixed AnnualIn-depth guide
National Shower with a Friend Day
New Wave Enviro Products’ creator-issued January 27, 2015 press release states that National Shower with a Friend Day was created for February 5 to add humor to winter while promoting aware…
Source-backedFixed AnnualIn-depth guide
National Shrimp Day
ANFP chapter calendars and Seafood Nutrition Partnership material independently identify May 10 as National Shrimp Day.
Source-backedFixed AnnualIn-depth guide
National Shrimp Scampi Day
Two Association of Nutrition & Foodservice Professionals chapter calendars list National Shrimp Scampi Day on 29 April.
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National Siamese Cat Day
Jace Shoemaker-Galloway’s current holiday list places National Siamese Cat Day on April 6, and UPI reports that she declared April 6, 2014 to be the first annual observance to encourage she…
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National Siblings Day
The Siblings Day Foundation states that its mission since 1995 has included establishing National Siblings Day annually on 10 April.
Source-backedFixed AnnualIn-depth guide
National Silence the Shame Day
Silence the Shame identifies 5 May as Silence the Shame Day, focused on reducing stigma and encouraging open discussion around mental wellness.
Source-backedFixed AnnualIn-depth guide
National Silent Movie Day
Silent Movie Day’s organizers state that the annual celebration is held September 29 to promote silent-film exhibition and preservation.
Source-backedFixed AnnualIn-depth guide
National Silly Earring Day
Olena Kagui’s April 5, 2021 first-party founding announcement states that National Silly Earring Day is celebrated annually on April 13; National Day Archives corroborates Kagui as creator…
Source-backedRule Based AnnualIn-depth guide
National Sisters Day
National Day Calendar identifies the first Sunday in August as the annual date and attributes creation in 1996 to Tricia Eleogram; New Jersey workforce-engagement material independently use…
Source-backedFixed AnnualIn-depth guide
National Situational Awareness Day
Pretty Loaded states that it submitted National Situational Awareness Day in 2015 and continues to mark September 26 annually. National Day Calendar records the 2015 submission/declaration…
Source-backedFixed AnnualIn-depth guide
National SKAM Artist Day
National Day Archives records August 24 as National SKAM Artist Day and identifies SKAM Artist as the 2020 founder; current annual calendars preserve August 24.
Source-backedFixed AnnualIn-depth guide
National Skincare Education Day
The day registry identifies June 1 annually and records Higher Education Skincare as the creator in 2020; current calendar coverage preserves the same recurring date.
Source-backedRule Based AnnualIn-depth guide
National Skip the Straw Day
Contemporaneous institutional coverage and National Day Calendar records identify the Whitehall Middle School Coral Keepers, with adviser Susan Tate, as the student group behind the 2017 ob…
Source-backedFixed AnnualIn-depth guide
National Smile Day
A founder-issued press release from Compassionate Dental Care states that Dr. Tim Stirneman and Jim Wojdyla founded National Smile Day on 31 May.
Source-backedFixed AnnualIn-depth guide
National Snack Stick Day
Klement’s company history states that it founded National Snack Stick Day in 2016 and ties the celebration to September 23.
Source-backedFixed AnnualIn-depth guide
National Snuggle a Chicken Day
National Day Archives identifies January 8, names Tracey Glover as founder and dates the founding to 2019; independent current observance coverage corroborates the January 8 recurrence, fou…
Source-backedFixed AnnualIn-depth guide
National Soccer Day
National Day Archives and National Today both place the informal observance on July 28; neither reviewed source establishes a statutory designation, reliable creator, first observance or ex…
Source-backedFixed AnnualIn-depth guide
National Sorry Day
Australian Human Rights Commission, AIATSIS, Reconciliation Australia and current PM&C material verify May 26, the first National Sorry Day on 26 May 1998 and the date’s connection to the 1…
Source-backedFixed AnnualIn-depth guide
National Soup It Forward Day
Soup Sisters’ official campaign page identifies March 3 as Soup It Forward Day and invites people to make, share, or donate soup; a separate Soup Sisters article uses the National Soup It F…
Source-backedFixed AnnualIn-depth guide
National Sour Candy Day
American Licorice Company currently maintains National Sour Candy Day campaign material, while National Day Calendar identifies American Licorice Company as founder in 2015 and July 18 as t…
Source-backedFixed AnnualIn-depth guide
National South Carolina Day
National Day Calendar lists the private National South Carolina Day on August 31. The U.S. Senate records South Carolina’s statehood/ratification date as May 23, 1788, while South Carolina…
Source-backedFixed AnnualIn-depth guide
National South Dakota Day
National Day Calendar lists the private National South Dakota Day on April 26. The U.S. Senate records South Dakota’s admission on November 2, 1889, and South Dakota law separately establis…
Source-backedFixed AnnualIn-depth guide
National Space Day
Government of India Department of Space Notification F. No. DS_5-18013/8/2023-V, dated 13 October 2023, declares August 23 every year as National Space Day to commemorate the Chandrayaan-3…
Source-backedFixed AnnualIn-depth guide
National Speak Up for Victims of Sexual Abuse Day
National Day Archives records October 18 annual recurrence and an October 2021 creation on behalf of Jack Nunnery; a New Jersey government DEIB calendar independently lists the date. RAINN…
Source-backedFixed AnnualIn-depth guide
National Specially-Abled Pets Day
National Day Calendar records May 3 as National Specially-Abled Pets Day and attributes its founding to animal advocate Colleen Paige; archived creator material is also referenced by indepe…
Source-backedRule Based AnnualIn-depth guide
National Sport Day
The Amiri Diwan states that Amiri Decision No. 80 of 2011 designates the Tuesday of the second week of February as National Sport Day and an official holiday; the 2026 event was held on 10…
Source-backedFixed AnnualIn-depth guide
National Sports Day (India)
Government of India sources state that National Sports Day is celebrated every year on 29 August in honour of hockey legend Major Dhyan Chand; the 2026 campaign also centers the 29 August b…
Source-backedRule Based AnnualIn-depth guide
National Sportsmanship Day
Institute for International Sport materials and congressional records identify the program as an annual observance launched in 1991; historical administrator materials specify the first Tue…
Source-backedRule Based AnnualIn-depth guide
National Start Seeing Monarchs Day
The City of Hoboken recognized 2 May 2026 as National Start Seeing Monarchs Day, while the current observance registry gives the reusable rule as the first Saturday of May.
Source-backedFixed AnnualIn-depth guide
National Steakburger Day
Freddy’s official materials identify February 24 as National Steakburger Day and describe the brand’s annual celebration.
Source-backedFixed AnnualIn-depth guide
National STEM/STEAM Day
The American Association of School Librarians notes that National STEM/STEAM Day was founded in 2015 by MGA Entertainment and is associated with 8 November.
Source-backedFixed AnnualIn-depth guide
National Stepfamily Day
The U.S. Census Bureau identifies September 16 as Stepfamily Day and traces the observance to Christy Tusing-Borgeld in 1997.
Source-backedFixed AnnualIn-depth guide
National Sticker Day
StickerGiant identifies National Sticker Day on 13 January and states that it created the day in 2016.
Source-backedRule Based AnnualIn-depth guide
National Stop Bullying Day
National Day Calendar and school-safety resources trace the observance to a 2009 student initiative and place Stop Bullying Day on the second Wednesday of October.
Source-backedRule Based AnnualIn-depth guide
National Stop Nausea Day
Reliefband Technologies states that it created National Stop Nausea Day and that it is celebrated on the third Tuesday in May each year.
Source-backedFixed AnnualIn-depth guide
National Strawberry Day
ANFP chapter calendars plus university horticulture/campus sources identify February 27 as National Strawberry Day.
Source-backedRule Based AnnualIn-depth guide
National Stress Awareness Day
ISMAUK states that it created National Stress Awareness Day in 1998 and now treats Stress Awareness Day as the midpoint/centrepiece of International Stress Awareness Week. Current ISMAUK ed…
Source-backedFixed AnnualIn-depth guide
National String Cheese Day
National Day Calendar’s proclamation record identifies Galbani Cheese as the 2017 founder and establishes September 20 as the annual observance date.
Source-backedFixed AnnualIn-depth guide
National Student Nurses Day
The American Nurses Association states that its Board, at the request of the National Student Nurses Association, designated May 8 in 1997 and that the day was celebrated annually as of 199…
Source-backedFixed AnnualIn-depth guide
National Student-Athlete Day
The NCAA marks National Student-Athlete Day on April 6 and uses the observance to recognize student-athlete accomplishments in academics, well-being and community service.
Source-backedFixed AnnualIn-depth guide
National Sugar Cookie Day
ANFP chapter calendars and Utah Tech University material identify July 9 as National Sugar Cookie Day.
Source-backedFixed AnnualIn-depth guide
National Sunglasses Day
The Vision Council and The Vision Council Foundation identify June 27 as the annual National Sunglasses Day campaign and actively published 2026 campaign materials; the original founding ye…
Source-backedFixed AnnualIn-depth guide
National Supply Chain Day®
Supply Chain Now’s official National Supply Chain Day page states that the celebration takes place every April 29 and identifies Mary Kate Love as founder; current 2026 programming confirms…
Source-backedFixed AnnualIn-depth guide
National Support Public Education Day
National Day Calendar identifies July 30 as an annual observance and attributes its creation to Chris Janotta, founder of SOS Million Teacher March.
Source-backedRule Based AnnualIn-depth guide
National Support Your Local Chamber of Commerce Day
The U.S. Chamber of Commerce states that National Support Your Local Chamber of Commerce Day is celebrated each year on the third Wednesday in October.
Source-backedFixed AnnualIn-depth guide
National Surgical Oncologist Day
National Day Calendar’s proclamation record identifies the founders and establishes August 22 as the annual observance date; the Society of Surgical Oncology has also recognized the day.
Source-backedFixed AnnualIn-depth guide
National Tackle Kids Cancer Day
National Day Calendar identifies Hackensack University Medical Center Foundation as founder, places the observance on September 15 and records annual observance beginning in 2017. Current T…
Source-backedFixed AnnualIn-depth guide
National Take Back the Lunch Break Day
Tork created the workplace campaign. The current National Day Calendar registry states that the observance was moved in 2022 from the third Friday of June to 24 June and is celebrated on 24…
Source-backedRule Based AnnualIn-depth guide
National Take the Stairs Day
The American Lung Association describes National Take the Stairs Day as an annual observance on the second Wednesday of January.
Source-backedFixed AnnualIn-depth guide
National Take Your Cat to the Vet Day
Feline Veterinary Medical Association material identifies August 22 as National Take Your Cat to the Vet Day and uses the observance for feline wellness-visit education; reviewed sources do…
Source-backedRule Based AnnualIn-depth guide
National Take Your Parents to Lunch Day
National Day Calendar states that the observance is promoted annually by KIWI Magazine and occurs on the second Wednesday in October.
Source-backedRule Based AnnualIn-depth guide
National Take Your Parents to the Playground Day
PDPlay says it established the observance in 2009 and that president John Ogden conceptualized it. Older PDPlay material used the Saturday before Easter weekend; current PDPlay material pro…
Source-backedRule Based AnnualIn-depth guide
National Talk in an Elevator Day
National Day Calendar and elevator-industry company TK Elevator independently define the recurrence as the last Friday in July rather than a fixed month/day.
Source-backedFixed AnnualIn-depth guide
National Tampon Day
National Day Archives identifies May 12 and TOP as the 2020 founder; TOP co-founder Denielle Finkelstein later stated first-hand that TOP founded the day in 2020. FDA guidance is used only…