| Jan 2 | National Pet Travel Safety Day | The Holiday Guild |
| Jan 7 | Camellia Day (Alabama) | |
| Jan 9 | Cassoulet Day | |
| Jan 10 | National Dietetics Day (India) | |
| Jan 12 | National Glazed Doughnut Day | |
| Jan 13 | National Gluten-Free Day | |
| Jan 13 | Tax Identity Theft Awareness Week | |
| Jan 13 | World Day of Bubble Gum | |
| Jan 20 | Take a Walk Outdoors Day | |
| Jan 21 | One-Liners Day | Jace Shoemaker-Galloway |
| Jan 22 | Museum Selfie Day | |
| Jan 26 | Dungeons And Dragons Day | |
| Jan 27 | Eugene Viollet-le-Duc Day | Google Doodles |
| Jan 29 | Big Block of Cheese Day | |
| Jan 29 | Library Shelfie Day | |
| Jan 30 | Indonesian Primate Day (Indonesia) | |
| Jan 30 | National Cleanliness Day (India) | |
| Jan 31 | International Zebra Day | |
| Feb 1 | Fully Fit February (Australia) | |
| Feb 1 | International Face and Body Art Day | |
| Feb 1 | National TV Safety Day | |
| Feb 1 | Vulvuary | |
| Feb 1 | World Galgo Day | |
| Feb 2 | World Cepelinai Day | |
| Feb 2 | World Tutu Day | |
| Feb 4 | National Medjool Date Day | |
| Feb 5 | National Voter Registration Day (UK) | |
| Feb 6 | Bob Marley Day | |
| Feb 6 | National Pro-Life Chalk Day | |
| Feb 7 | Odd Socks Day (Italy) | |
| Feb 7 | School Crossing Guard Appreciation Day (Florida) | |
| Feb 8 | Call Everyone Dave Day (UK) | |
| Feb 11 | Flash Appreciation Day | |
| Feb 12 | Gamma Day (Illinois) | |
| Feb 15 | International Male Chastity Day | |
| Feb 17 | National Cigar Day | |
| Feb 19 | 219 Day | |
| Feb 20 | Kurt Cobain Day | |
| Feb 20 | National Limoncello Day | |
| Feb 20 | National Muffin Day | Foodimentary |
| Feb 22 | World Encephalitis Day | |
| Feb 22 | World NGO Day | |
| Feb 24 | National Cupcake Day (Canada) | |
| Feb 25 | National Toast Day (UK) | |
| Feb 25 | Tastykake Day (Pennsylvania) | |
| Feb 27 | National Milk Tart Day (South Africa) | |
| Mar 1 | National Alport Syndrome Awareness Month | |
| Mar 1 | National Athletic Trainer Appreciation Day | |
| Mar 1 | Vascular Anomalies Awareness Month | |
| Mar 1 | World PTLS Awareness Month | |
| Mar 1 | Zero Discrimination Day | |
| Mar 3 | World Wildlife Day | |
| Mar 5 | 305 Day | |
| Mar 5 | National Emetophobia Awareness Day (UK) | |
| Mar 5 | National Poutine Day | |
| Mar 7 | National Burrito Day | |
| Mar 8 | 308 Day | |
| Mar 8 | International Women's Collaboration Brew Day | |
| Mar 8 | National Catholic Sisters Week | |
| Mar 8 | World Potocki-Lupski Syndrome Awareness Day | |
| Mar 10 | National Ranch Dressing Day | Foodimentary |
| Mar 11 | Gambling Disorder Screening Day | |
| Mar 12 | 312 Day | |
| Mar 13 | International Bottom Appreciation Day | |
| Mar 13 | Intrauterine Growth Restriction Awareness Day | |
| Mar 13 | World Day of Endometriosis | |
| Mar 13 | World Endometriosis March Day | |
| Mar 14 | Science Education Day | |
| Mar 15 | National Shoe the World Day | National Day Calendar |
| Mar 16 | No Selfies Day | |
| Mar 17 | Shakespeare Week | |
| Mar 20 | Hufflepuff Pride Day | |
| Mar 21 | Anal Cancer Awareness Day | |
| Mar 21 | Saison Day | |
| Mar 21 | Slytherin Pride Day | |
| Mar 22 | Gryffindor Pride Day | |
| Mar 23 | National Eucalypt Day (Australia) | |
| Mar 23 | Phace Syndrome Awareness Week | |
| Mar 23 | Ravenclaw Pride Day | |
| Mar 24 | Booby Cupcake Week | |
| Mar 24 | Cherokee Nation Remembrance Day | |
| Mar 24 | MuseumWeek | |
| Mar 24 | National Cocktail Day | Jace Shoemaker-Galloway |
| Mar 25 | Air Max Day | |
| Mar 26 | Drop Everything And Read Day (Uganda) | |
| Mar 27 | 327 Day | |
| Mar 27 | Purple People Eater Day | |
| Mar 28 | International Laser Tag Day | |
| Mar 29 | Arduino Day | |
| Mar 29 | Declaw Awareness Day | |
| Mar 30 | World Bipolar Day | |
| Mar 31 | International Loki Day | |
| Mar 31 | National Border Control Day | |
| Apr 1 | National Kite Month | |
| Apr 1 | Take Your Horse to Work Day | |
| Apr 1 | Tick and Mosquito Awareness Month (North Carolina) | |
| Apr 2 | National Ferret Day | |
| Apr 4 | National Volleyball Day | |
| Apr 6 | National Siamese Cat Day | Jace Shoemaker-Galloway |
| Apr 8 | National Dog Fighting Awareness Day | |
| Apr 9 | BC Book Day (British Columbia) | |
| Apr 10 | One Tribe One Day (Virginia) | |
| Apr 10 | Play True Day | |
| Apr 11 | International Day for Maternal Health and Rights | |
| Apr 11 | Love My School Day | |
| Apr 12 | Lucid Dreaming Day | |
| Apr 12 | National Only Child Day | |
| Apr 13 | International Day of the Kiss | |
| Apr 14 | Pathologists' Assistant Day | |
| Apr 15 | International Microvolunteering Day | |
| Apr 15 | International Pompe Day | |
| Apr 15 | National ASL Day | |
| Apr 15 | National McDonald's Day | |
| Apr 16 | International 4p-/Wolf-Hirschhorn Syndrome Awareness Day | |
| Apr 17 | Kickball Day | |
| Apr 18 | Anal Sex Day | |
| Apr 18 | Cinema Theater Day (India) | |
| Apr 19 | National Poker Day | |
| Apr 22 | National Send Your Man Nudes Day | |
| Apr 23 | 423 Day | |
| Apr 23 | Lost Dog Awareness Day | |
| Apr 24 | Fashion Revolution Day | |
| Apr 24 | International Watch Firefly Day | Social Media |
| Apr 25 | National Financial Educators Day | |
| Apr 25 | National Mani-Pedi Day | |
| Apr 26 | World Pilots' Day | |
| Apr 27 | Koningsdag | |
| Apr 27 | World Day of Marriage | |
| Apr 28 | Maternal Mental Health Week | |
| Apr 28 | Steel Safety Day | |
| Apr 29 | National Canadian Film Day (Canada) | |
| Apr 30 | National PrepareAthon Day | |
| Apr 30 | National Turkey Bacon Day | |
| Apr 30 | National Window Film Day | |
| May 1 | First Responders Day (Ontario) | |
| May 1 | Food Allergy Action Month | |
| May 1 | Global Developmental Delay Awareness Day | |
| May 1 | National Purebred Dog Day | |
| May 1 | Therapeutic Massage Awareness Day | |
| May 2 | National Life Insurance Day | National Day Calendar |
| May 3 | Independent Bookstore Day | |
| May 3 | International Gilbert and Sullivan Day | |
| May 3 | National Widow's Day | |
| May 3 | National Wildfire Community Preparedness Day | |
| May 4 | Maya Angelou Day (Boston) | |
| May 5 | Construction Safety Week | |
| May 5 | European Independent Living Day | |
| May 6 | Give Choose Day (Virginia) | |
| May 6 | Give STL Day (Missouri) | |
| May 7 | International Harm Reduction Day | |
| May 7 | National Cosmopolitan Day | Jace Shoemaker-Galloway |
| May 9 | National Gray Day | |
| May 10 | Drone Day | |
| May 11 | Hostess Cupcake Day | |
| May 13 | Children of Fallen Patriots Day | |
| May 14 | National Good Hair Day | |
| May 14 | World Verbal Dyspraxia Awareness Day | |
| May 15 | National Hummus Day | |
| May 15 | VBF Day of Awareness | |
| May 17 | National Air Medical Communications Specialists Day | |
| May 17 | National Mushroom Hunting Day | Jace Shoemaker-Galloway |
| May 17 | Plant a Lemon Tree Day | |
| May 20 | National Streaming Day | |
| May 21 | National Trauma Survivors Day | |
| May 22 | Ewokalypse | |
| May 23 | Go Nissan Day | |
| May 23 | International Day to End Obstetric Fistula | |
| May 23 | Melissa McBride Day | Social Media |
| May 23 | World Wrestling Day | |
| May 24 | World Fish Migration Day | |
| May 27 | Rachel Carson Day | Google Doodles |
| May 28 | World Blood Cancer Day | |
| May 28 | World Menstrual Hygiene Day | |
| May 30 | Post Traumatic Stress Disorder Awareness Day (Western Australia) | |
| May 31 | International Amiga Day | |
| Jun 1 | HHT Awareness Month | |
| Jun 1 | International Sheltie Day | |
| Jun 1 | Jurassic June | |
| Jun 1 | National Crime Reading Month | |
| Jun 1 | National Fragrance Week | |
| Jun 1 | World Outlander Day | |
| Jun 2 | National Safety Stand-Down Week | |
| Jun 3 | RoboCop Day (Detroit) | |
| Jun 5 | HIV Long-Term Survivors Awareness Day | |
| Jun 7 | National Health and Fitness Day (Canada) | |
| Jun 9 | National Enemy Day | Social Media |
| Jun 10 | Datsun 610 Day | |
| Jun 10 | Men's Mental Health Awareness Day (Canada) | |
| Jun 10 | National Forklift Safety Day | |
| Jun 12 | International Drink Chenin Day | |
| Jun 12 | Mom's Equal Pay Day | |
| Jun 12 | National Harm Reduction Day (Canada) | |
| Jun 12 | World Verdejo Day | |
| Jun 13 | National Cupcake Lover's Day | Foodimentary |
| Jun 16 | 616 Day | |
| Jun 16 | Marvell 616 Day | |
| Jun 17 | International Violin Day | |
| Jun 18 | 618 Day | |
| Jun 18 | Insalata Day (Italy) | |
| Jun 20 | Datsun 620 Day | |
| Jun 20 | International Tennis Day | |
| Jun 21 | National Selfie Day | |
| Jun 21 | World Giraffe Day | |
| Jun 23 | International Women in Engineering Day | |
| Jun 23 | Shoryuken Day / 623 Day | |
| Jun 24 | French Canadian-American Day | |
| Jun 25 | Purple Rain Day | |
| Jun 26 | National DCE Day | |
| Jun 27 | National Sunglasses Day | |
| Jun 30 | Wildland Firefighter Week of Remembrance | |
| Jul 1 | National Deli Salad Month | |
| Jul 1 | National Fragile X Awareness Month | |
| Jul 5 | World Dawah Day | |
| Jul 6 | Body Painting Day (New York) | |
| Jul 6 | Umbrella Cover Day | |
| Jul 7 | International Ponytail Day | |
| Jul 10 | Capybara Appreciation Day | |
| Jul 10 | National Librarian's Day (South Africa) | |
| Jul 11 | Day of the Forest Firefighter (Mexico) | |
| Jul 12 | Get Outside Day (Canada) | |
| Jul 13 | GIST Awareness Day | |
| Jul 13 | International Day of the Conductor | |
| Jul 14 | 714 Day (California) | |
| Jul 14 | World Orca Day | |
| Jul 15 | International Spikeball Day | |
| Jul 15 | National Give Something Away Day | National Day Calendar |
| Jul 16 | Black Women's Equal Pay Day | |
| Jul 16 | National Funnel Cake Day | |
| Jul 17 | 717 Day (Pennsylvania) | |
| Jul 17 | International Firgun Day | |
| Jul 20 | Liam Payne Appreciation Day | |
| Jul 22 | World Brain Day | |
| Jul 23 | Batman Day | |
| Jul 23 | Historic County Flags Day (UK) | |
| Jul 24 | National Private Investigator Day | |
| Jul 24 | National Seasonal Affective Disorder Awareness Day (UK) | |
| Jul 25 | International Red Shoe Day | |
| Jul 25 | National Wine and Cheese Day | Jace Shoemaker-Galloway |
| Jul 26 | EFF Anniversary (South Africa) | |
| Jul 26 | World Tofu Day | |
| Jul 27 | Boeing 727 Day | |
| Jul 27 | World Head and Neck Cancer Day | |
| Jul 28 | Drink 728 Day | |
| Jul 30 | World Day Against Trafficking in Persons | |
| Aug 1 | Bystander Awareness Month | |
| Aug 1 | National Waifu Day | |
| Aug 1 | Rye Month | |
| Aug 1 | Shop Online for Groceries Month | |
| Aug 3 | Cornish Pasty Day | |
| Aug 4 | Exchange Day | |
| Aug 4 | National White Wine Day | Jace Shoemaker-Galloway |
| Aug 5 | Maze Runner Day | |
| Aug 5 | Start Up Day Across America | |
| Aug 8 | Shop Online for Groceries Day | |
| Aug 8 | World Cross Stitch Day | |
| Aug 14 | Lake Michigan Day | |
| Aug 15 | World Portable Sanitation Day | |
| Aug 16 | CPAN Day | |
| Aug 18 | National Badge Ribbon Day | |
| Aug 19 | Haikyuu Day (Japan) | |
| Aug 21 | International Day of Mosques | |
| Aug 21 | National Brazilian Blowout Day | National Day Calendar |
| Aug 22 | International Tongue Twister Day | |
| Aug 27 | World Rock Paper Scissors Day | |
| Aug 30 | National Beach Day | Colleen Paige |
| Sep 1 | Achalasia Awareness Month | |
| Sep 1 | NICU Awareness Month | |
| Sep 1 | Save Your Photos Month | |
| Sep 1 | Sci-Fi September | |
| Sep 1 | World Letter Writing Day | |
| Sep 2 | World Art Drop Day | |
| Sep 3 | National Dahlia Day | |
| Sep 3 | Victory Day (China) | |
| Sep 5 | International Pierre Robin Sequence Awareness Day | |
| Sep 5 | National Shrink Day | |
| Sep 5 | Tweet like Werner Herzog Day | |
| Sep 6 | World Shorebirds Day | |
| Sep 7 | Newt Day | |
| Sep 7 | World Duchenne Awareness Day | |
| Sep 7 | World Goddess Day | |
| Sep 8 | I'm On Top Of It Day | |
| Sep 9 | International 9P Minus Awareness Day | |
| Sep 9 | National African Immigrant and Refugee HIV and Hepatitis Awareness Day | |
| Sep 9 | National Ants On A Log Day | |
| Sep 10 | Alpaca Day | |
| Sep 10 | Port Wine Day | |
| Sep 12 | Porsche 912 Day | |
| Sep 13 | National Sour Beer Day | |
| Sep 13 | Pet Birth Defect Awareness Day | |
| Sep 14 | National Dementia Carers Day (UK) | |
| Sep 15 | Pension Awareness Day (UK) | |
| Sep 17 | UK Dairy Day (UK) | |
| Sep 18 | International Read An Ebook Day | |
| Sep 19 | 919 Day (North Carolina) | |
| Sep 19 | National Family Business Day (UK) | |
| Sep 20 | Day of Circassians | |
| Sep 20 | International HeForShe Day | |
| Sep 20 | National Pepperoni Pizza Day | |
| Sep 20 | Unification Day | |
| Sep 22 | Science Literacy Week (Canada) | |
| Sep 25 | National Tune-Up Day | |
| Sep 26 | NICU Remembrance Day | |
| Sep 26 | World Cassowary Day | |
| Sep 27 | International Air Ambulance Week | |
| Sep 27 | NICU Giving Day | |
| Sep 27 | Save Your Photos Day | |
| Sep 27 | World Day of Leukodystrophies | |
| Sep 28 | NICU Staff Recognition Day | |
| Sep 29 | National Biscotti Day | |
| Sep 29 | Sibling Support Day | |
| Sep 30 | International Podcast Day | |
| Sep 30 | National Sporting Heritage Day (UK) | |
| Sep 30 | Neonatal Intensive Care Awareness Day | |
| Sep 30 | World Pole Dance Day | |
| Oct 1 | Chronic Urticaria Awareness Day | |
| Oct 1 | Greek Coffee Day (Greece) | |
| Oct 1 | International Gaucher Day | |
| Oct 1 | National Cholesterol Month (UK) | |
| Oct 1 | Urban October | |
| Oct 1 | World Ballet Day | |
| Oct 1 | Zombie Preparedness Month (Kansas) | |
| Oct 2 | National Brow Day | |
| Oct 2 | Wrongful Conviction Day | |
| Oct 3 | Buy British Day (UK) | |
| Oct 4 | International Dakota Johnson Day | Social Media |
| Oct 4 | University Mental Health and Wellbeing Day (Australia) | |
| Oct 5 | World Quaker Day | |
| Oct 6 | International Self Storage Day | |
| Oct 6 | National Coaches Day | |
| Oct 7 | News Engagement Day | |
| Oct 7 | Team Margot Stem Cell and Bone Marrow Awareness Day | |
| Oct 8 | International Print Day | |
| Oct 9 | National Class Ring Day | |
| Oct 9 | Scrubs Day | Days of the Year |
| Oct 10 | Banh Mi Day | |
| Oct 10 | World Audiologists Day | |
| Oct 11 | International Pinotage Day | |
| Oct 12 | International Central Service Week | |
| Oct 13 | Earth Science Literacy Day | |
| Oct 13 | International Day of Education in Prison | |
| Oct 13 | Silly Sayings Day | Jace Shoemaker-Galloway |
| Oct 13 | World Thrombosis Day | |
| Oct 14 | Global FPIES Awareness Day | |
| Oct 15 | International Power In One Day | |
| Oct 16 | Bring Your Bible to School Day | |
| Oct 16 | Geoscience for Everyone Day | |
| Oct 16 | Global Ethics Day | |
| Oct 17 | International Real Vanilla Day | |
| Oct 21 | International Day of Photonics | |
| Oct 22 | National Burns Awareness Day (UK) | |
| Oct 22 | Saint John Paul II Feast Day | |
| Oct 23 | Banking On Values Day | |
| Oct 23 | International Snow Leopard Day | |
| Oct 23 | National Day of Action to End Violence Against Women Living With HIV | |
| Oct 23 | SUDEP Action Day | |
| Oct 25 | European Lawyers Day | |
| Oct 25 | International Robin Hood Day | |
| Oct 25 | MDS World Awareness Day | |
| Oct 25 | National Mosque Open Day (Australia) | |
| Oct 25 | World Dragon Day | |
| Oct 28 | National Internment Commemoration Day (Canada) | |
| Oct 28 | Stargate Day | |
| Oct 30 | Vice Presidents Day | |
| Oct 31 | National Unity Day (India) | |
| Oct 31 | World Cities Day | |
| Oct 31 | World Lemur Day | |
| Nov 1 | 22q Awareness Month | |
| Nov 1 | CRPS Awareness Month | |
| Nov 1 | Carbon Monoxide Awareness Week (Canada) | |
| Nov 1 | Critical Infrastructure Security and Resilience Month | |
| Nov 1 | National College Application Month | |
| Nov 1 | Teff and Millet Month | |
| Nov 1 | World Halal Day | |
| Nov 1 | World Kobane Day | |
| Nov 2 | International Day to End Impunity for Crimes Against Journalists | |
| Nov 3 | Color the World Orange Day | |
| Nov 3 | Washing Machine Day | |
| Nov 5 | Britney Day (Las Vegas) | |
| Nov 5 | International Pathology Day | |
| Nov 5 | World Day of Caregivers | |
| Nov 6 | National Casting Day (UK) | |
| Nov 7 | National Cancer Awareness Day (India) | |
| Nov 8 | Ladies Learning Code Day (Canada) | |
| Nov 9 | World Adoption Day | |
| Nov 10 | Aromantic Spectrum Awareness Week | |
| Nov 10 | National Pork Belly Day | |
| Nov 11 | Puerto Princesa Underground River Day (Philippines) | |
| Nov 12 | A&W Root Beer Mug Day | |
| Nov 13 | World Pancreatic Cancer Day | |
| Nov 14 | Pirate Day Friday (Australia) | |
| Nov 15 | European Music Therapy Day | |
| Nov 15 | National Drummer Day | |
| Nov 15 | World Ohtahara Syndrome Awareness Day | |
| Nov 16 | Day of Ukrainian Marines (Ukraine) | |
| Nov 16 | International Selfie Day | |
| Nov 16 | International Selfie Day | |
| Nov 17 | Smith-Magenis Syndrome / SMS Awareness Day | |
| Nov 18 | National CTEPH Awareness Day | |
| Nov 18 | Sonic R Day | |
| Nov 19 | Love Theatre Day | |
| Nov 19 | National Macchiato Day | Foodimentary |
| Nov 19 | National Pop-Tart Day | |
| Nov 19 | Women's Entrepreneurship Day | |
| Nov 20 | National Catholic School Principal's Day | |
| Nov 20 | Wear Green Day | |
| Nov 21 | Dignity and Freedom Day (Ukraine) | |
| Nov 21 | National Gingerbread Cookie Day | Foodimentary |
| Nov 22 | Crystal Skull World Day | |
| Nov 22 | Kimchi Day (South Korea) | |
| Nov 24 | International Carmenere Day | |
| Nov 24 | International Day of the Bible | |
| Nov 24 | National Change Your Password Day (Netherlands) | |
| Nov 24 | National Fairy Bread Day (Australia) | |
| Nov 26 | Kelaghayi Day (Azerbaijan) | |
| Nov 26 | National Milk Day (India) | |
| Nov 27 | World Citizen Day | |
| Nov 28 | Black Hole Friday | |
| Nov 28 | Random Acts Of Kindness Friday | |
| Nov 29 | Tamandua Day (Brazil) | |
| Nov 29 | World Anteater Day | |
| Nov 30 | Jewish Refugees Day / Commemoration Day for Jews expelled from Arab Lands and Iran | |
| Dec 2 | Thank a Dance Teacher Day | |
| Dec 3 | Family and Consumer Sciences (FCS) Day | |
| Dec 3 | International Spirit of the Game Day | |
| Dec 3 | National Green Bean Casserole Day | Jace Shoemaker-Galloway |
| Dec 5 | World Biomedical Engineering Day | |
| Dec 6 | National Cook for Christmas Day | Foodimentary |
| Dec 9 | International Human Rights Defenders Day | |
| Dec 13 | Nanjing Massacre Memorial Day (China) | |
| Dec 15 | National Gingerbread Latte Day | |
| Dec 16 | Jane Austen Day | |
| Dec 16 | National Green Chili Day | |
| Dec 18 | National Stilton Day (UK) | |
| Dec 19 | Holly Day | Jace Shoemaker-Galloway |
| Dec 21 | Don't Make Your Bed Day | |
| Dec 22 | Defrost Your Turkey Day (UK) | |
| Dec 23 | Leap of Faithiversary | |
| Dec 25 | Good Governance Day | |
| Dec 28 | National Eat Chocolate Day | |
| Dec 30 | Drink With a Straw Day | |
| Dec 30 | Kona Coffee Day | |
