| | Memento Mori "Remember You Die" Day | Special Interest | Educational, Obscure |
| | Thomas Crapper Day | Fun | Crazy, Obscure, Weird National |
| | National Bubble Wrap Appreciation Day | Fun | Obscure, Weird National |
| | National Inane Answering Message Day | Fun | Funny, Obscure, Weird National |
| | Hell is Freezing Over Day | Fun | Obscure, Weird National |
| | Pull Your Sofa Off the Wall Month | Special Interest | Obscure, Weird National |
| | National Wear Red Day | Health | Awareness, Obscure |
| | The Record of a Sneeze Day | Fun | Fun, Obscure |
| | Don't Cry Over Spilled Milk Day | Fun | Obscure |
| | Extraterrestrial Culture Day | Fun | Obscure, Weird National |
| | Get a Different Name Day | Fun | Crazy, Obscure |
| | Cow Milked While Flying in an Airplane Day | Special Interest | Obscure, Weird National |
| | Thumb Appreciation Day | Appreciation | Fun, Obscure, Weird National |
| | National Tile Day | Special Interest | Appreciation, Obscure |
| | International Sword Swallowers Day | Arts & Entertainment | Educational, Obscure, Weird National |
| | For Pete's Sake Day | Fun | Funny, Obscure, Weird National |
| | National Umbrella Month | Special Interest | Fashion, Lifestyle, Obscure |
| | World's Largest Rattlesnake Roundup | Special Interest | American, Obscure, Weird National |
| | Debunking Day | Special Interest | Awareness, Obscure |
| | International Redefining Wealth Day | Special Interest | Careers, Financial, Obscure |
| | World Contact Day | | Crazy, Obscure, Weird National |
| | Alien Abduction Day | Special Interest | Fun, Obscure, Weird National |
| | World Day of Theatre for Children and Young People | Arts & Entertainment | International, Obscure |
| | International Colour Day | Special Interest | Activities, Obscure |
| | Atheist Day | Special Interest | Educational, Obscure, Weird National |
| | March Full Moon | Special Interest | Cultural, Environment, Obscure |
| | Make Up Your Own Holiday Day | Fun | Activities, Obscure |
| | International Scribble Day | Arts & Entertainment | Activities, Hobby, Obscure |
| | National Joe Day | Fun | Funny, Obscure |
| | Barnum & Bailey Day | Fun | Obscure |
| | National Walk Around Things Day | Fun | Obscure, Weird National |
| | Chakri Day | Cultural | Cultural Holidays, Lifestyle, Obscure |
| | National No Housework Day | Special Interest | Fun, Obscure |
| | International ASMR Day | Health | Health, Mental Health, Obscure |
| | National Name Yourself Day | Fun | Obscure |
| | National Submarine Day | Appreciation | Career, Obscure |
| | Take A Wild Guess Day | Fun | Obscure, Weird National |
| | Foursquare Day | Special Interest | Obscure, Technology |
| | National Reveal the Genius Within Day | Special Interest | American, Obscure |
| | International Day of Mastering Conversations That Matter | Special Interest | Obscure |
| | Keep Off the Grass Day | Special Interest | Activities, Obscure, Weird National |
| | Richter Scale Day | Special Interest | Historical, Obscure, Technology |
| | Woody Woodpecker Day | Animal | Fun, Obscure |
| | National Lumpy Rug Day | Fun | Obscure, Weird National |
| | National Paranormal Day | Special Interest | Activities, Obscure, Weird National |
| | National Lost Sock Memorial Day | Fun | Crazy, Obscure |
| | National Odometer Day | Special Interest | Appreciation, Obscure, Technology |
| | Cough Drop Day | Special Interest | Obscure |
| | National Frog Jumping Day | Animal | Activities, Appreciation, Obscure |
| | National Dance Like a Chicken Day | Fun | Crazy, Obscure |
| | Tracky Dack Day | Fun | Crazy, Obscure |
| | National Cherry Dessert Day | Food & Beverage | Dessert, Fruit, Obscure |
| | National Cellophane Tape Day | Special Interest | Appreciation, Obscure |
| | Nothing to Fear Day | Special Interest | Obscure |
| | What You Think Upon Grows Day | Cultural | Lifestyle, Mental Health, Obscure |
| | Commemoration of General Don Martín Miguel de Güemes | Federal | Obscure |
| | National Pink Day | Fun | Obscure |
| | National Handshake Day | Relationship | Appreciation, Obscure |
| | Tau Day | Special Interest | Awareness, Educational, Obscure |
| | International Asteroid Day | Special Interest | International, Obscure, Technology |
| | World UFO Day | Special Interest | Crazy, Obscure, Pop Culture |
| | Disobedience Day | Special Interest | Children, Obscure |
| | Be Nice to Jersey Week | Cause | Awareness, Love, Obscure |
| | National Different Colored Eyes Day | Health | Obscure |
| | Embrace Your Geekness Day | Special Interest | Appreciation, Obscure |
| | Fool's Paradise Day | Special Interest | Mental Health, Obscure |
| | Pandemonium Day | Special Interest | Activities, Obscure |
| | National Ugly Truck Contest Day | Special Interest | American, Obscure, Weird National |
| | Walk On Stilts Day | Special Interest | Fun, Obscure |
| | National Lipstick Day | Special Interest | Fashion, Lifestyle, Obscure |
| | Clean Your Floors Day | Special Interest | American, Obscure, Weird National |
| | National Tarantula Appreciation Day | Appreciation | American, Appreciation, Obscure |
| | Abai Day | Special Interest | Appreciation, International, Obscure |
| | No Sponge Bob Day | Fun | American, Fun, Obscure |
| | Never Give Up Day | Special Interest | Obscure |
| | National Spark the World Day | Appreciation | Appreciation, Lifestyle, Obscure |
| | National Acne Positivity Day | Special Interest | Obscure |
| | National Ampersand Day | Special Interest | Appreciation, Educational, Obscure |
| | Wonderful Weirdos Day | Special Interest | Funny, Obscure, Weird National |
| | National Cartonnage Day | Special Interest | Obscure |
| | The September Equinox | Special Interest | Environment, International, Obscure |
| | National AJ Day | Special Interest | Brand, Fun, Obscure |
| | National Kevin Day | Fun | Obscure |
| | International Skeptics Day | Special Interest | Crazy, Fun, Obscure |
| | Create a Great Funeral Day | Cause | Family, Obscure, Weird National |
| | National Consciousness Month for Punctuality and Civility | Cultural | Awareness, Obscure |
| | National Love Your Red Hair Day | Appreciation | Fun, Obscure |
| | National Hug a Bear Day | Animal | American, Obscure |
| | National Retinol Day | Health | Lifestyle, Obscure |
| | Occult Day | Special Interest | Educational, Obscure, Pagan |
| | National Absurdity Day | Fun | Funny, Obscure |
| | Love Your Freckles Day | Fun | Obscure |
| | Blasé Day | Fun | Obscure, Weird National |
| | Take it in the Ear Day | Fun | American, Obscure, Weird National |
| | Lost and Found Day | Fun | Obscure, Weird National |
| | Festival for the Souls of Dead Whales | Appreciation | Appreciation, Obscure, Weird National, Wildlife |
| | Halcyon Days | Fun | Historical, Obscure |
| | Wear a Plunger on Your Head Day | Fun | Funny, Obscure, Weird National |
| | Dot Your I’s Day | Special Interest | Activities, Obscure, Weird National |
| | Mathematics Day | Special Interest | Educational, Obscure |
| | A’Phabet Day or No “L” Day | Fun | Obscure, Weird National |
| | National Whiners Day | Fun | American, Appreciation, Obscure |
| | Festival of Enormous Changes at the Last Minute | Fun | Obscure, Weird National |
| | National Resolution Planning Day | Fun | Lifestyle, Obscure |
| | Unlucky Day | Fun | Obscure, Weird National |