Source-backedRule Based Annual
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.
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Workplace, Professions & Appreciation observances
Professional recognition, workplace campaigns, occupations, industries and appreciation observances.
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Source-backedFixed Annual
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 Annual
National Tarantula Appreciation Day
National Day Archives records August 8 each year for National Tarantula Appreciation Day and identifies Palp Friction Tarantulas as the creator in 2019.
Source-backedEdition Specific
National Teacher Day
The National Education Association identifies National Teacher Day on the Tuesday of Teacher Appreciation Week and its 2026 materials place it on 5 May.
Source-backedFixed Annual
National Team Manager Day
Observance references identify FlipGive and National Today as the creators of National Team Manager Day and place the recognition annually on November 6.
Source-backedFixed Annual
National Thank a Mail Carrier Day
National Day Calendar repeatedly places the appreciation observance on February 4 while noting it is also known as Thank a Mailman Day; the current evidence does not establish USPS or feder…
Source-backedFixed Annual
National Thermal Engineer Day
Advanced Thermal Solutions identifies July 24 as National Thermal Engineer Day and is the sponsoring organization behind the observance.
Source-backedRule Based Annual
National Third Shift Workers Day
UFCW materials identify National Third Shift Workers Day on the second Wednesday in May, with dated examples consistent with the recurrence rule.
Source-backedFixed Annual
National Tourist Appreciation Day
National Today and Days Of The Year independently place National Tourist Appreciation Day on May 6 each year.
Source-backedFixed Annual
National Transplant Financial Coordinator Day
National Day Archives attributes creation of the observance to the Transplant Financial Coordinators Association board and ties 10 April to the association’s 2001 agreement date; a separate…
Source-backedFixed Annual
National Waiters and Waitresses Day
Bar & Restaurant identifies May 21 as National Waiters and Waitresses Day in a dedicated 2014 article and in multiple hospitality promotional calendars.
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National Waiters Day
Hospitality-industry coverage identifies National Waiters Day as a May 21 campaign inspired by Fred Sirieix and led by the Springboard Charity.
Source-backedFixed Annual
National Waitstaff Day
The U.S. Census Bureau has published National Waitstaff Day material for May 21, providing federal institutional recognition of the date.
Source-backedFixed Annual
National Women in Aerospace Day
H. Res. 941 was introduced to recognize May 20 as National Women in Aerospace Day, and the Congressional Record documents a May 20, 2026 House recognition statement.
Source-backedEdition Specific
National Women Physicians Day
The American Medical Women’s Association marked National Women Physicians Day on February 3, 2026 and connects the date with the birthday of physician Elizabeth Blackwell.
Source-backedFixed Annual
National Workers’ Comp Adjuster Day
National Day Archives records August 17 of each calendar year and identifies the Centre for Neuro Skills as the creator in July 2021.
Source-backedFixed Annual
Navy Day
Government of India Ministry of Defence / Press Information Bureau
Source-backedFixed Annual
Nobel Day
The Nobel Foundation identifies 10 December as Nobel Day, when the Nobel Prize award ceremonies take place in Oslo and Stockholm
Source-backedRule Based Annual
Occupational Safety and Health Professional Day
Contemporary safety-industry coverage records that ASSE established Occupational Safety and Health Professional Day in 2006 and observes it on the Wednesday during the first full NAOSH week…
Source-backedEdition Specific
Oglethorpe Day
Oglethorpe University describes Oglethorpe Day as an annual tradition honoring the university's namesake, James Edward Oglethorpe
Source-backedHistorical Legacy
OR Nurse Day (historical name; modern successor: Perioperative Nurses Week)
AORN states that the observance was established in 1979 as OR Nurse Day, later expanded to OR Nurse Week, and became Perioperative Nurses Week in 2000; the modern 2026 week is November 8–14.
Source-backedRule Based Annual
Overseas NHS Workers Day
BMA, NHS bodies and UK parliamentary records document Overseas NHS Workers Day; recent editions fall on the first Friday in March (3 March 2023, 7 March 2025, 6 March 2026).
Source-backedRule Based Annual
Paraprofessional Appreciation Day
Education-union and school-system sources identify Paraprofessional Appreciation Day as the first Wednesday in April; AFT marked the day in its April 2026 PSRP update.
Source-backedFixed Annual
Parents as Teachers Day
Parents as Teachers National Center identifies 8 November as Parents as Teachers Day; its earlier first-party announcement used “National Parents as Teachers Day” and says the observance ha…
Source-backedRule Based Annual
Pastor Appreciation Day
IPHC Discipleship Ministries explicitly identifies the second Sunday of October as the national date for Pastor Appreciation Day while noting that local churches may choose another date.
Source-backedFixed Annual
Pathologists’ Assistants Day
The American Association of Pathologists’ Assistants identifies April 14 as PA Day/Pathologists’ Assistants Day and has repeatedly promoted the annual professional recognition.
Source-backedFixed Annual
Pediatric Hematology/Oncology Nurses’ Day
The Association of Pediatric Hematology/Oncology Nurses states that Pediatric Hematology/Oncology Nurses’ Day was established by APHON in 2010 and is celebrated every year on September 8.
Source-backedEdition Specific
Pharmacy Technician Day
The Pharmacy Technician Certification Board’s current campaign identifies Pharmacy Technician Day 2026 as Tuesday, October 20 and frames it as recognition of pharmacy technicians’ skill, de…
Source-backedFixed Annual
Pi Day
The U.S. House of Representatives agreed to a resolution supporting the designation of Pi Day and encouraging schools and educators to observe it with mathematics activities
Source-backedFixed Annual
Pick A Pathologist Pal Day
The first-party Wellcat Holidays calendar lists Pick A Pathologist Pal Day on December 13 and identifies the collection as created by Thomas and Ruth Roy.
Source-backedFixed Annual
Professional Speakers Celebration Day
The Global Speakers Federation names March 14 as Professional Speakers Celebration Day annually, beginning in 2023, and its 2026 program again uses March 14.
Source-backedEdition Specific
Provider Appreciation Day®
Child Care Aware of America identifies Provider Appreciation Day as the Friday before Mother’s Day and references the 8 May 2026 observance.
Source-backedRule Based Annual
Provider Appreciation Day®
Child Care Aware of America states that Provider Appreciation Day is observed annually on the Friday before Mother’s Day; its 2026 toolkit gives 8 May 2026.
Source-backedRule Based Annual
Randol Fawkes Labour Day
Statute Law of The Bahamas / Office of the Prime Minister
Source-backedRule Based Annual
Registered Dietitian Nutritionist Day
The Academy of Nutrition and Dietetics states that Registered Dietitian Nutritionist Day is celebrated on the second Wednesday in March during National Nutrition Month.
Source-backedFixed Annual
Research Administrator Day / International Research Administrators Day
University of Michigan research administration materials identify 25 September as National Research Administrator Day and attribute its creation to NCURA in 2015; NCURA regional programming…
Source-backedEdition Specific
Reserves Day
UK Parliament written answer by the Ministry of Defence
Source-backedRule Based Annual
Ride to Work Day
NHTSA identifies Ride to Work Day on the second Tuesday in June; the campaign organizer likewise uses that recurrence, making 9 June the 2026 date.
Source-backedRule Based Annual
Root Canal Appreciation Day
Multiple observance archives identify the second Wednesday in May recurrence and attribute the 2005 creation to dentist Dr. Chris Kammer; archived press-release references support the creat…
Source-backedRule Based Annual
SBDC Day
America’s SBDC / SBDCNet, with U.S. Small Business Administration participation
Source-backedRule Based Annual
School Bus Driver Appreciation Day
Current school-government communications and a New York State Assembly member page identify School Bus Driver Appreciation Day as the fourth Tuesday in April; in 2026 that is 28 April.
Source-backedFixed Annual
School Librarian Day
American Association of School Librarians publications identify April 4 as National School Librarian Day/School Librarian Day.
Source-backedEdition Specific
School Nurse Day / National School Nurse Day
The National Association of School Nurses identifies School Nurse Day 2026 as Wednesday, May 6, and states that the observance is celebrated on the Wednesday within National Nurses Week.
Source-backedFixed Annual
School Principals Day
The California Department of Education’s 2026 and 2027 recognition calendars both state that May 1 should be recognized annually as School Principals Day.
Source-backedRule Based Annual
SKYWARN Recognition Day
National Weather Service material describes the first Saturday in December as SKYWARN Recognition Day. The national 2025 event was cancelled while organizers discussed redevelopment, so cur…
Source-backedFixed Annual
Speak Up For Service Day
National Day Calendar’s founder record states that Mandan Lions Club founded Speak Up For Service Day in 2014 and that it is celebrated annually on October 30.
Source-backedHistorical Legacy
Special Operations Forces Day
New York Assembly proceedings record a resolution memorializing the governor to proclaim June 15, 2016 as Special Operations Forces Day in the State of New York. No evergreen national recur…
Source-backedFixed Annual
Squirrel Appreciation Day
Smithsonian Institution and Smithsonian National Zoo material repeatedly identify January 21 as Squirrel Appreciation Day and note that it has been celebrated since 2001.
Source-backedHistorical Legacy
Startup Day Across America
New Democrat Coalition and House member records document Startup Day Across America as a bipartisan congressional initiative launched in 2013, with edition-specific dates rather than one pe…
Source-backedFixed Annual
Supermarket Employee Day
FMI states that February 22 is Supermarket Employee Day and that the 2026 observance marked the fifth year of the industry recognition event.
Source-backedRule Based Annual
Supply Chain Professionals Day
CSCMP announced the inaugural annual Supply Chain Professionals Day in 2018, and trade coverage records the recurring rule as the third Monday in May.
Source-backedEdition Specific
System Administrator Appreciation Day
The creator’s site defines System Administrator Appreciation Day as the last Friday in July; in 2026 that rule yields 31 July.
Source-backedEdition Specific
Teach Children to Save Day
The American Bankers Association publishes Teach Children to Save resources and identifies 23 April as the 2026 Teach Children to Save Day
Source-backedFixed Annual
Teachers’ and Mentors’ Day
Uzbek government sources identify 1 October as Teachers’ and Mentors’ Day, established as a national holiday and day off in the 1990s.
Source-backedFixed Annual
Thank a Plugin Developer Day
WordPress co-founder Matt Mullenweg declared January 28 Thank a Plugin Developer Day in a 2009 WordPress News post; JetBrains independently references the same January 28 initiative.
Source-backedEdition Specific
Thank Your Mentor Day
MENTOR’s 2026 National Mentoring Month materials list Thank Your Mentor Day on January 28. Earlier campaign editions used other January dates, so the date is stored as edition-specific rath…
Source-backedEdition Specific
Transit Driver Appreciation Day
TriMet’s 2026 campaign asks riders to celebrate Transit Driver Appreciation Day on 18 March 2026.
Source-backedHistorical Legacy
U.S. Air Force Academy founding anniversary
The U.S. Air Force Academy’s official history states that the Academy was established on April 1, 1954. The source supports an institutional anniversary, not a distinct nationwide recurring…
Source-backedFixed AnnualIn-depth guide
United Nations Public Service Day
A/RES/57/277
Source-backedEdition Specific
Vet Nurse Day
The official Vet Nurse Day site states that the 2026 Vet Nurse Day is on 9 October 2026 and publishes the associated veterinary-assistant initiative.
Source-backedFixed Annual
Volunteer Recognition Day
A New York State Senate event calendar places Volunteer Recognition Day on 20 April 2026; independent observance documentation identifies 20 April as the annual recognition date.
Source-backedEdition Specific
Walk to Work Day
Western Australia’s Department of Transport published a current 2026 Walk to Work Day notice for Friday 27 March and describes it as a national recognition event promoting walking for all o…
Source-backedFixed Annual
White Shirt Day
UAW sources describe White Shirt Day as an annual 11 February remembrance of the Flint Sit-Down Strike victory and worker dignity.
Source-backedFixed Annual
Women's Entrepreneurship Day
The Women's Entrepreneurship Day Organization identifies 19 November as Women's Entrepreneurship Day and centers the campaign on supporting women entrepreneurs
Source-backedFixed Annual
Workers Memorial Day
The International Labour Organization states that 28 April has been associated since 1996 with the international trade union movement’s commemoration of victims of occupational accidents an…
Source-backedFixed Annual
World Anaesthesia Day
World Federation of Societies of Anaesthesiologists (WFSA)
Source-backedFixed Annual
World Barber Day
World Barber Day organizers; launched in Ireland in 2017
Source-backedEdition Specific
World Bartender Day
Bacardi Limited explicitly marked World Bartender Day on February 24, 2026 in an industry program announcement.
Source-backedFixed AnnualIn-depth guide
World Engineering Day for Sustainable Development
Proclaimed by UNESCO in 2019
Source-backedFixed Annual
World Essential Workers Day
National Day Archives records March 15 and identifies Ray Washington as the creator.
Source-backedFixed Annual
World Family Doctor Day
World Organization of Family Doctors (WONCA)
Source-backedEdition Specific
World FM Day
International Facility Management Association (IFMA) and GlobalFM