| International Day for Biological Diversity | |  |
| Unity Day | | |
| Independence Day (2nd Day) | | |
| National Maritime Day | | |
| National Craft Distillery Day | | |
| National Solitaire Day | | |
| National Buy a Musical Instrument Day | | |
| National Vanilla Pudding Day | | |
| Emergency Medical Services for Children Day | | |
| Harvey Milk Day | | |
| World Goth Day | | |
| Sherlock Holmes Day | | |
| International Day to End Obstetric Fistula | | |
| Labor Day / May Day | | |
| Constitution Day | | |
| World Turtle Day | | |
| National Lucky Penny Day | | |
| National Taffy Day | | |
| Vlach’s National Day (for Vlach community) | | |
| Wesak - Buddha Day | | |
| Buddha Purnima | | |
| Buddha Purnima/Vesak | | |
| Vesak Full Moon Poya Day | | |
| Culture and Literacy Day | | |
| The Battle of Pichincha | | |
| Independence Day | | |
| National Aviation Maintenance Technician Day | | |
| Brother’s Day | | |
| National Scavenger Hunt Day | | |
| National Escargot Day | | |
| National Don’t Fry Day | | |
| Commonwealth Day | | |
| Saints Cyril and Methodius' Day | | |
| International Tiara Day | | |
| National Asparagus Day | | |
| National Title Track Day | | |
| National Day/May 1810 Revolution | | |
| Independence Day | | |
| Liberation and Resistance Day | | |
| Sing Out Day | | |
| Towel Day | | |
| National Missing Children's Day | | |
| National Wine Day | | |
| National Tap Dance Day | | |
| National Brown-Bag It Day | | |
| Africa Day | | |
| Geek Pride Day | | |
| Independence Day | | |
| National Sorry Day | | |
| World Lindy Hop Day | | |
| National Blueberry Cheesecake Day | | |
| Trinity Sunday | | |
| Lag B'Omer | | |
| Mother's Day | | |
| Carpet Day | | |
| Trinity | | |
| Dniester Day | | |
| Cultural Workers and Folk Artists Day | | |
| Kiev Day | | |
| National Paper Airplane Day | | |
| World Dracula Day | | |
| Sun Screen Day | | |
| National Cellophane Tape Day | | |
| National Grape Popsicle Day | | |
| Spring Bank Holiday | | |
| Day off for Commonwealth Day | | |
| Memorial Day | | |
| Jefferson Davis' Birthday | | |
| Mother's Day | | |
| Reconciliation Day | | |
| Late May Bank Holiday | | |
| Africa Day | | |
| Children's Day | | |
| Republic Day | | |
| Hamburger Day | | |
| Derg Downfall Day | | |
| National Brisket Day | | |
| Menstrual Hygiene Day | | |
| Amnesty International Day | | |
| International Day of United Nations Peacekeepers | | |
| Put a Pillow on Your Fridge Day | | |
| National Paperclip Day | | |
| National Coq Au Vin Day | | |
| National Senior Health & Fitness Day | | |
| National Flip Flop Day | | |
| National Biscuit Day | | |
| International Everest Day | | |
| Learn About Composting Day | | |
| Statehood Day | | |
| Anguilla Day | | |
| Day of the Canary Islands | | |
| National Creativity Day | | |
| National Water a Flower Day | | |
| National Hole In My Bucket Day | | |
| National Mint Julep Day | | |
| Loomis Day | | |
| Corpus Christi | | |
| Mother's Day | | |
| Indian Arrival Day | | |
| Harvest Festival | | |
| World No Tobacco Day | | |
| Royal Brunei Armed Forces Day | | |
| Day of Castile-La Mancha | | |
| Autonomous Vehicle Day | | |
| National Save Your Hearing Day | | |
| National Speak in Sentences Day | | |
| National Macaroon Day | | |
| National Smile Day | | |
| Necrotizing Fasciitis Awareness Day | | |
| National Heat Awareness Day | | |
| National Heroes Day | | |
| Bermuda Day | | |
| Harvest Festival Day 2 | | |
| Web Designer Day | | |
| President's Day | | |
| Global Day of Parents | | |
| Madaraka Day | | |
| Statehood Day | | |
| World Reef Awareness Day | | |
| National Olive Day | | |
| National Heimlich Maneuver Day | | |
| National Go Barefoot Day | | |
| National Nail Polish Day | | |
| National Say Something Nice Day | | |
| National Penpal Day | | |
| National Hazelnut Cake Day | | |
| National Black Bear Day | | |
| National Bubbly Day | | |
| National Prairie Day | | |
| National Trails Day | | |
| Wear BLUE Day | | |
| Independence Day | | |
| Children's Day | | |
| The Yang di-Pertuan Agong's Birthday | | |
| Gawai Dayak | | |
| Dinosaur Day | | |
| National Rose Month | | |
| World Milk Day | | |
| International Tabletop Day | | |
| National Adopt A Cat Month | | |
| National Iced Tea Month | | |
| National Papaya Month | | |
| Audiobook Month | | |
| National Pollinators Month | | |
| National Dairy Month | | |
| National Camping Month | | |
| Men’s Health Month | | |
| National Candy Month | | |
| Turkey Lovers Month | | |
| National Fresh Fruit And Vegetables Month | | |
| Care For Your Grandparents Month | | |
| International Mud Month | | |
| National Great Outdoors Month | | |
| National Zoo And Aquarium Month | | |
| National Soul Food Month | | |
| National Homeownership Month | | |
| Republic Day | | |
| Isabel Province Day | | |
| National Rotisserie Chicken Day | | |
| National Rocky Road Day | | |
| National Bubba Day | | |
| National Cancer Survivors Day | | |
| Father's Day | | |
| Gawai Dayak Holiday | | |
| Fathers' Day | | |
| Opium Suppression Movement Day | | |
| European Bicycle Day | | |
| Martyr's Day | | |
| National Egg Day | | |
| National Repeat Day | | |
| National Chocolate Macaroons Day | | |
| National Leave The Office Early Day | | |
| Jefferson Davis' Birthday | | |
| Corpus Christi | | |
| Western Australia Day | | |
| Queen's Birthday | | |
| Gawai Dayak Holiday | | |
| June Bank Holiday | | |
| Chimborazo Day | | |
| World Bicycle Day | | |
| World Cider Day | | |
| Insect Repellent Awareness Day | | |
| International Day of Innocent Children Victims of Aggression | | |
| National Cheese Day | | |
| National Old Maids Day | | |
| National Cognac Day | | |
| National SAFE Day | | |
| Emancipation Day | | |
| Hug Your Cat Day | | |
| World Environment Day | | |
| President´s Day | | |
| Constitution Day | | |
| National Gingerbread Day | | |
| National Veggie Burger Day | | |
| Global Running Day | | |
| Yom Yerushalayim (Jerusalem Day) | | |
| Hot Air Balloon Day | | |
| National Sausage Roll Day | | |
| HIV Long-Term Survivors Day | | |
| International Day For The Fight Against Illegal, Unreported And Unregulated Fishing | | |
| National Coworking Day | | |
| Memorial Day | | |
| National day | | |
| Queensland Day | | |
| Visually Impaired People Day | | |
| Chosun Children's Union Foundation Day | | |
| D-Day | | |
| National Eyewear Day | | |
| National Higher Education Day | | |
| National Gardening Exercise Day | | |
| National Yo-Yo Day | | |
| National Drive In Movie Day | | |
| National Applesauce Cake Day | | |
| Savitri Puja | | |
| National Moonshine Day | | |
| National Caves And Karst Day | | |
| Russian Language Day | | |
| Anniversary of the Memorandum of the Slovak Nation | | |
| Sette Giugno | | |
| Flag Day | | |
| Dissolution of union with Sweden (1905) | | |
| National Boone Day | | |
| National Chocolate Ice Cream Day | | |
| National VCR Day | | |
| National Donut Day | | |
| Randol Fawkes Labour Day | | |
| T. T. Bank Holiday | | |
| National Fish And Chip Day | | |
| World Food Safety Day | | |
| Love Island Day | | |
| World Oceans Day | | |
| Temotu Province Day | | |
| National Best Friends Day | | |
| National Name Your Poison Day | | |
| National Upsy Daisy Day | | |
| National Rosé Day | | |
| Sovereign's Birthday | | |
| Queen's Birthday | | |
| World Doll Day | | |
| World Gin Day | | |
| Day of Murcia | | |
| Day of La Rioja | | |
| National Heroes Day | | |
| National Donald Duck Day | | |
| National Strawberry Rhubarb Pie Day | | |
| National Children’s Day | | |
| Portugal Day | | |
| Reconciliation Day | | |
| National Ballpoint Pen Day | | |
| National Iced Tea Day | | |
| National Black Cow Day | | |
| National Herbs and Spices Day | | |
| Sovereign's Birthday | | |
| Queen's Birthday | | |
| Sacred Heart | | |
| Abolition Day | | |
| Dragon Boat Festival | | |
| Martyrdom of Guru Arjan Dev Sahib | | |
| National Making Life Beautiful Day | | |
| National Corn on the Cob Day | | |
| National German Chocolate Cake Day | | |
| Call Your Doctor Day | | |
| Kamehameha Day | | |
| Erev Shavuot | | |
| International Yarn Bombing Day | | |
| Chaco Armistice | | |
| Brazilian Valentine's Day | | |
| World Day Against Child Labour | | |
| Independence Day | | |
| Peace Day | | |
| National Red Rose Day | | |
| National Jerky Day | | |
| National Peanut Butter Cookie Day | | |
| National Loving Day | | |
| Shavuot | | |
| Russia Day | | |
| Democracy Day | | |
| Superman Day | | |
| International Falafel Day | | |
| San Antonio | | |
| International Axe Throwing Day | | |
| National Kitchen Klutzes of America Day | | |
| Random Acts of Light Day | | |
| National Weed Your Garden Day | | |
| National Sewing Machine Day | | |
| National Career Nurse Assistants Day | | |
| International Albinism Awareness Day | | |
| Orthodox Ascension Day | | |
| World Softball Day | | |
| International Rock Day | | |
| World Blood Donor Day | | |
| Liberation Day | | |
| Freedom Day | | |
| Army Birthday | | |
| Flag Day | | |
| International Bath Day | | |
| National Strawberry Shortcake Day | | |
| National Pop Goes the Weasel Day | | |
| National Bourbon Day | | |
| World Elder Abuse Awareness Day | | |
| National Smile Power Day | | |
| Nature Photography Day | | |
| World Juggling Day | | |
| Beer Day Britain | | |
| World Tapas Day | | |
| International Surfing Day | | |
| Bloomsday | | |
| National Fudge Day | | |
| Turkey Lovers’ Day | | |
| Father's Day | | |
| International Day of Family Remittances | | |
| Day of Arafat | | |
| Sacrifice Feast Eve | | |
| Galla Bayramy (Wheat Harvest Festival) | | |
| Youth Day | | |
| Fresh Veggies Day | | |
| Arborist Appreciation Day | | |
| Sustainable Gastronomy Day | | |
| World Day to Combat Desertification and Drought | | |
| Icelandic Republic Day | | |
| Bunker Hill Day | | |
| Commemoration of General Don MartÃn Miguel de Güemes | | |
| Global Garbage Man Day | | |
| National Eat Your Vegetables Day | | |
| National Stewart’s Root Beer Day | | |
| National Apple Strudel Day | | |
| National Cherry Tart Day | | |
| Eid al-Adha | | |
| Queen's Birthday | | |
| Father's Day | | |
| National Heroes Day | | |
| Tabaski | | |
| Youth Day observed | | |
| World Tessellation Day | | |
| King's Mother's Birthday | | |
| Constitution Day | | |
| International Picnic Day | | |
| International Panic Day | | |
| National Go Fishing Day | | |
| National Splurge Day | | |
| Eid al-Adha holiday | | |
| International Sushi Day | | |
| Clean Your Aquarium Day | | |
| International Day For Countering Hate Speech | | |
| José Artigas´ Birthday Memorial | | |
| Sauntering Day | | |
| National FreeBSD Day | | |
| National Garfield the Cat Day | | |
| National Martini Day | | |
| National Watch Day | | |
| Juneteenth | | |
| Emancipation Day | | |
| International Day for the Elimination of Sexual Violence in Conflict | | |
| Eid al-Adha holiday | | |
| Flag Day | | |
| World Refugee Day | | |
| American Eagle Day | | |
| Martyrs' Day | | |
| Labor Day | | |
| National Kouign Amann Day | | |
| National Hike with a Geek Day | | |
| National Vanilla Milkshake Day | | |
| National Ice Cream Soda Day | | |
| National Dump the Pump Day | | |
| National Seashell Day | | |
| June Solstice | | |
| West Virginia Day | | |
| Eid al-Adha holiday | | |
| Aymara New Year Day | | |
| International Day of Yoga | | |
| National Day | | |
| Day of the Martyrs | | |
| Music Festival | | |
| National Selfie Day | | |
| National Peaches ‘N’ Cream Day | | |
| National Day of the Gong | | |
| Go Skateboarding Day | | |
| National Daylight Appreciation Day | | |
| National Take Back the Lunch Break Day | | |
| Take Your Dog to Work Day | | |
| National Indigenous Peoples Day | | |
| June Solstice | | |
| Eid al-Adha holiday | | |
| Midsummer Eve | | |
| Father's Day | | |
| World Giraffe Day | | |
| Make Music Day | | |
| National Smoothie Day | | |
| World Music Day | | |
| World Motorcycle Day | | |
| International Day Of The Celebration Of The Solstice | | |
