| National Day | |  |
| Investiture of the Captains Regent | |  |
| April Fool's Day | |  |
| National Poetry Month | |  |
| National One Cent Day | |  |
| National Sourdough Bread Day | |  |
| Easter Monday | |  |
| César Chávez Day observed | |  |
| Family Day | |  |
| Dyngus day | |  |
| National Atheist Day | |  |
| Sexual Assault Awareness Month | |  |
| World Sarcoidosis Awareness Month | |  |
| Fun Day | |  |
| International Fun At Work Day | |  |
| Reading Is Funny Day | |  |
| National Garden Month | |  |
| Summer Tire Changeover Month | |  |
| National Soft Pretzel Month | |  |
| National Afternoon Tea Month | |  |
| National Autism Awareness Month | |  |
| National Month Of Hope | |  |
| National Humor Month | |  |
| National Safe Digging Month | |  |
| Adopt A Ferret Month | |  |
| National Pecan Month | |  |
| National Fresh Celery Month | |  |
| National Brunch Month | |  |
| International Guitar Month | |  |
| Active Dog Month | |  |
| National Decorating Month | |  |
| Month Of The Military Child | |  |
| National Straw Hat Month | |  |
| National Welding Month | |  |
| National Canine Fitness Month | |  |
| Limb Loss And Limb Difference Awareness Month | |  |
| National Cannabis Awareness Month | |  |
| National Soy Foods Month | |  |
| Stress Awareness Month | |  |
| National Jazz Appreciation Month | |  |
| National Child Abuse Awareness Month | |  |
| Day of the Veterans | |  |
| Union Day of Belarus and Russia | |  |
| International Children's Book Day | |  |
| National Reconciliation Day | |  |
| National Peanut Butter and Jelly Day | |  |
| National Ferret Day | |  |
| SAAM Day of Action | |  |
| Pascua Florida Day | |  |
| Easter Tuesday | |  |
| Southland Anniversary Day | |  |
| World Autism Awareness Day | |  |
| National Film Score Day | |  |
| National Tweed Day | |  |
| National Chocolate Mousse Day | |  |
| National Find a Rainbow Day | |  |
| National Walking Day | |  |
| Childhelp National Day of Hope | |  |
| World Party Day | |  |
| World Aquatic Animal Day | |  |
| Fish Fingers And Custard Day | |  |
| International Day for Mine Awareness and Assistance in Mine Action | |  |
| Peace Day | |  |
| Independence Day | |  |
| National Vitamin C Day | |  |
| National Walk Around Things Day | |  |
| National Hug a Newsperson Day | |  |
| National School Librarian Day | |  |
| National Chicken Cordon Bleu Day | |  |
| Jeep 4×4 Day | |  |
| National Burrito Day | |  |
| Tomb Sweeping Day (Qing Ming Jie) | |  |
| Children's Day | |  |
| Näfelser Fahrt | |  |
| Tell a Lie Day | |  |
| International Carrot Day | |  |
| World Rat Day | |  |
| D.A.R.E. Day | |  |
| First Contact Day | |  |
| National Flash Drive Day | |  |
| National Go For Broke Day | |  |
| National Caramel Day | |  |
| National Read a Road Map Day | |  |
| National Raisin and Spice Bar Day | |  |
| National Deep Dish Pizza Day | |  |
| Laylat al-Qadr (Night of Power) | |  |
| Tomb Sweeping Day (Qing Ming Jie) | |  |
| Laylat al-Qadr | |  |
| Arbor Day | |  |
| Walk to Work Day | |  |
| Poet In A Cupcake Day | |  |
| International Day Of Conscience | |  |
| Hospital Admitting Clerks Day | |  |
| International Day of Sport for Development and Peace | |  |
| Chakri Day | |  |
| National Tartan Day | |  |
| President Ntaryamira Day | |  |
| National Sorry Charlie Day | |  |
| New Beer’s Eve | |  |
| National Caramel Popcorn Day | |  |
| National Student-Athlete Day | |  |
| National Teflon Day | |  |
| National Love Our Children Day | |  |
| National Handmade Day | |  |
| National Siamese Cat Day | |  |
| Army Day in United States | |  |
| National Acai Bowl Day | |  |
| National DIY Day | |  |
| Plan Your Epitaph Day | |  |
| International Pillow Fight Day | |  |
| International Firewalk Day | |  |
| Tangible Karma Day | |  |
| Motherhood and Beauty Day | |  |
| Health Day | |  |
| World Health Day | |  |
| Day of Remembrance of the Victims of the Rwanda Genocide | |  |
| Mozambican Woman's Day | |  |
| Karume Day | |  |
| Tutsi Genocide Memorial Day | |  |
| National Beer Day | |  |
| National Coffee Cake Day | |  |
| National No Housework Day | |  |
| National Girl Me Too Day | |  |
| A Drop of Water - A grain of Gold | |  |
| Health Day | |  |
| Geologists’ Day | |  |
| International Beaver Day | |  |
| International Romani Day | |  |
| National All is Ours Day | |  |
| National Zoo Lovers Day | |  |
| National Empanada Day | |  |
| Draw A Picture Of A Bird Day | |  |
| National Pygmy Hippo Day | |  |
| Independence Restoration Day | |  |
| Vimy Ridge Day | |  |
| Constitution Day of the Republic of Kosovo | |  |
| Martyrs' Day | |  |
| National Cherish an Antique Day | |  |
| National Name Yourself Day | |  |
| National Winston Churchill Day | |  |
| National Chinese Almond Cookie Day | |  |
| National Former Prisoner of War Recognition Day | |  |
| National Library Workers Day | |  |
| Ugadi | |  |
| Eid al-Fitr (End of Ramadan) | |  |
| The Day of Valor | |  |
| Be Kind to Lawyers Day | |  |
| National Unicorn Day | |  |
| Equal Pay Day | |  |
| Siblings Day | |  |
| National Cinnamon Crescent Day | |  |
| National Farm Animals Day | |  |
| Eid al-Fitr (End of Ramadan) | |  |
| Hari Raya Puasa | |  |
| National Hug Your Dog Day | |  |
| Golfer’s Day | |  |
| International Safety Pin Day | |  |
| Battle of Rivas | |  |
| National Pet Day | |  |
| National Barber Shop Quartet Day | |  |
| National Submarine Day | |  |
| National Eight Track Tape Day | |  |
| National Cheese Fondue Day | |  |
| National Alcohol Screening Day | |  |
| Eid al-Fitr (End of Ramadan) Holiday | |  |
| Eid al-Fitr (End of Ramadan) Holiday | |  |
| World Parkinson’s Day | |  |
| International Day of Human Space Flight | |  |
| Grilled Cheese Day | |  |
| Yuri's Night | |  |
| National Big Wind Day | |  |
| National Licorice Day | |  |
| National Grilled Cheese Sandwich Day | |  |
| Children´s Day | |  |
| Eid al-Fitr (End of Ramadan) Holiday | |  |
| The Day of Silence | |  |
| Walk On Your Wild Side Day | |  |
| World Hamster Day | |  |
| Deskfast Day | |  |
| National Only Child Day | |  |
| Unfairly Prosecuted Persons Day | |  |
| National Scrabble Day | |  |
| National Thomas Jefferson Day | |  |
| National Peach Cobbler Day | |  |
| National Make Lunch Count Day | |  |
| Thomas Jefferson's Birthday | |  |
| Eid al-Fitr (End of Ramadan) Holiday | |  |
| Vaisakhi | |  |
| Songkran | |  |
| International FND Awareness Day | |  |
| America Day | |  |
| Ambedkar Jayanti | |  |
| Look up the Sky Day | |  |
| Cake and Cunnilingus Day | |  |
| National Gardening Day | |  |
| National Reach as High as You Can Day | |  |
| National Pan American Day | |  |
| National Ex Spouse Day | |  |
| National Dolphin Day | |  |
| National Pecan Day | |  |
| International Moment of Laughter Day | |  |
| Vaisakhi / Baisakhi / Vishu | |  |
| Tamil New Year | |  |
| National Look Up At The Sky Day | |  |
| World Chagas Disease Day | |  |
| Songkran | |  |
| Birth Date of Kim Il Sung | |  |
| Father Damien Day | |  |
| National Take a Wild Guess Day | |  |
| National Rubber Eraser Day | |  |
| National Titanic Remembrance Day | |  |
| National Glazed Spiral Ham Day | |  |
| Tax Day | |  |
| Sechseläuten | |  |
| Patriot's Day | |  |
| Queen's Birthday | |  |
| Declaration of Malacca as Historical City | |  |
| Husband Appreciation Day | |  |
| National Anime Day | |  |
| National ASL Day | |  |
| Songkran | |  |
| International Microvolunteering Day | |  |
| National That Sucks Day | |  |
| National Orchid Day | |  |
| National Eggs Benedict Day | |  |
| National Wear Your Pajamas to Work Day | |  |
| National Healthcare Decisions Day | |  |
| National Bean Counter Day | |  |
| Emancipation Day | |  |
| Songkran observed | |  |
| Save The Elephant Day | |  |
| National Librarian Day | |  |
| Independence Day | |  |
| Women's Rights Day | |  |
| Herbalist Day | |  |
| National Bat Appreciation Day | |  |
| National Ellis Island Family History Day | |  |
| National Haiku Poetry Day | |  |
| National Cheeseball Day | |  |
| Flag Day | |  |
| Ramanavami | |  |
| National Banana Day | |  |
| Blah Blah Blah Day | |  |
| National Kickball Day | |  |
| National Ford Mustang Day | |  |
| World Hemophilia Day | |  |
| Nothing Like A Dame Day | |  |
| Birthday of Guru Angad Dev | |  |
| International Day for Monuments and Sites | |  |
| Independence Day | |  |
| National Lineman Appreciation Day | |  |
| National Columnists’ Day | |  |
| National Animal Crackers Day | |  |
| National High Five Day | |  |
| Get to Know Your Customers Day | |  |
| Yom HaAliyah | |  |
| Hung Kings Festival | |  |
| National Piñata Day | |  |
| College Student Grief Awareness Day | |  |
| Pet Owners Independence Day | |  |
| Declaration of Independence | |  |
| Bicycle Day | |  |
| National Hanging Out Day | |  |
| National Oklahoma City Bombing Commemoration Day | |  |
| National Garlic Day | |  |
| National Amaretto Day | |  |
| National Education and Sharing Day | |  |
| Birthday of King Mswati III | |  |
| Fast and Prayer Day | |  |
| National Rice Ball Day | |  |
| Chinese Language Day | |  |
| Lima Bean Respect Day | |  |
| National Cheddar Fries Day | |  |
| National Look Alike Day | |  |
| National Pineapple Upside Down Cake Day | |  |
| National Auctioneers Day | |  |
| 420 Day | |  |
| Tiradentes Day | |  |
| San Jacinto Day | |  |
| National Kindergarten Day | |  |
| National Chocolate Covered Cashews Day | |  |
| National Yellow Bat Day | |  |
| Mahavir Jayanti | |  |
| Queen's Birthday | |  |
| Administrative Professionals Week | |  |
| National Tea Day | |  |
| National Bulldogs Are Beautiful Day | |  |
| World Creativity And Innovation Day | |  |
| National Holocaust, World War II Genocide and other Fascist Crimes Victims Remembrance Day | |  |
| Oklahoma Day | |  |
| National Girl Scout Leader’s Day | |  |
| National Jelly Bean Day | |  |
| St. George's Day | |  |
| Confederate Memorial Day | |  |
| Queen's Birthday observed | |  |
| Passover Eve | |  |
| Landing of the 33 orientals | |  |
| Earth Day | |  |
| Stephen Lawrence Day | |  |
| National Beagle Day | |  |
| International Mother Earth Day | |  |
| St. George's Day | |  |
| World Book and Copyright Day | |  |
| English Language Day | |  |
| Language Day | |  |
| Day of Turks | |  |
| German Beer Day | |  |
| National Sovereignty and Children's Day | |  |
| Lover's Day | |  |
| Castile and León Day | |  |
| National Talk Like Shakespeare Day | |  |
| National Picnic Day | |  |
| National Take a Chance Day | |  |
| National Cherry Cheesecake Day | |  |
| National Lost Dogs Awareness Day | |  |
| Passover (First Day) | |  |
| God of Medicine's Birthday | |  |
| Day of Aragón | |  |
| Hanuman Jayanti | |  |
| School Bus Drivers Day | |  |
| Spanish Language Day | |  |
| World Table Tennis Day | |  |
| Action Day for Tolerance and Respect between People | |  |
| Genocide Remembrance Day | |  |
| Concord Day | |  |
| National Pigs in a Blanket Day | |  |
| Administrative Professionals Day | |  |
| Passover (2nd Day) | |  |
| Theravada New Year | |  |
| Scream Day | |  |
| International Guide Dog Day | |  |
| Stop Food Waste Day | |  |
| International Day Of Multilateralism And Diplomacy For Peace | |  |
| World Malaria Day | |  |
| Liberation Day | |  |
| The Feast of St Mark | |  |
| Liberty Day | |  |
| Sinai Liberation Day | |  |
| Chosun People's Army Foundation Day | |  |
| National Flag Day | |  |
| National Telephone Day | |  |
| National East Meets West Day | |  |
| National Zucchini Bread Day | |  |
| National DNA Day | |  |
| National Hug a Plumber Day | |  |
| Take Our Daughters and Sons to Work Day | |  |
| National Poem In Your Pocket Day | |  |
| ANZAC Day | |  |
| Passover (3rd Day) | |  |
| Girls' Day - Career Information Day | |  |
| First Day of Summer | |  |
| National Flag Day | |  |
| Gathering Of Nations | |  |
| International Girls In ICT Day | |  |
| National Lingerie Day | |  |
| World Penguin Day | |  |
| International Delegate’s Day | |  |
| Love Your Thighs Day | |  |
| Intellectual Property Day | |  |
| World Intellectual Property Day | |  |
| Secretaries' Day | |  |
| Day of Remembrance of the Chernobyl Tragedy | |  |
| Union Day | |  |
| National Audubon Day | |  |
| National Dissertation Day | |  |
| National Richter Scale Day | |  |
| National Kids and Pets Day | |  |
| National Pretzel Day | |  |
| National Help a Horse Day | |  |
| National Hairball Awareness Day | |  |
| Arbor Day | |  |
| Confederate Heroes' Day | |  |
| Great Prayer Day | |  |
| International Chernobyl Disaster Remembrance Day | |  |
| Passover (4th Day) | |  |
| Birthday of the Sultan of Terengganu | |  |
| Alien Day | |  |
| Get Organized Day | |  |
| World Burlesque Day | |  |
| Hug An Australian Day | |  |
| King's Day | |  |
| State Flag Day | |  |
| Independence Day | |  |
| Day of Uprising Against Occupation | |  |
| Independence Day | |  |
| Freedom Day | |  |
| National Babe Ruth Day | |  |
| National Tell a Story Day | |  |
| National Prime Rib Day | |  |
| National Devil Dog Day | |  |
| National Rebuilding Day | |  |
| National Sense of Smell Day | |  |
| National Pool Opening Day | |  |
| National Kiss of Hope Day | |  |
| Children´s Day | |  |
| Passover (5th Day) | |  |
| World Veterinary Day | |  |
| Morse Code Day | |  |
| World Tapir Day | |  |
| Marine Mammal Rescue Day | |  |
| National Go Birding Day | |  |
| Independent Bookstore Day | |  |
| International Marconi Day | |  |
| National Heroes Day | |  |
| World Day for Safety and Health at Work | |  |
| Afghan Victory Day | |  |
| Workers' Memorial Day | |  |
| National Superhero Day | |  |
| National Blueberry Pie Day | |  |
| National Great Poetry Reading Day | |  |
| National BraveHearts Day | |  |
| National Pet Parents Day | |  |
| Passover (6th Day) | |  |
| St. Pierre Chanel Day | |  |
| Turkmen Racing Horse Festival | |  |
| World Pinhole Photography Day | |  |
| Save The Frogs Day | |  |
| Biological Clock Day | |  |
| National Cubicle Day | |  |
| Global Pay It Forward Day | |  |
| Clean Comedy Day | |  |
| Day of Trees | |  |
| International Dance Day | |  |
| National Peace Rose Day | |  |
| National Zipper Day | |  |
| National Shrimp Scampi Day | |  |
| Confederate Memorial Day | |  |
| Passover (7th Day) | |  |
| Passover (Last Day) | |  |
| Shōwa Day | |  |
| World Wish Day | |  |
| We Jump The World Day | |  |
| St. James the Great Day | |  |
| International Jazz Day | |  |
| Carnival Day | |  |
| Liberation Day/Reunification Day | |  |
| Education Day | |  |
| National Bubble Tea Day | |  |
| National Sarcoidosis Day | |  |
| National Military Brats Day | |  |
| National PrepareAthon! Day | |  |
| National Honesty Day | |  |
| National Adopt a Shelter Pet Day | |  |
| National Bugs Bunny Day | |  |
| National Hairstylist Appreciation Day | |  |
| National Oatmeal Cookie Day | |  |
| National Raisin Day | |  |
| Passover (Last Day in Diaspora) | |  |
| Children's Day | |  |
| Walpurgis Night | |  |