| Ellis Island Day | Federal | American, Historical |
| Haiti Independence Day | Federal | Civic, Historical |
| Handsel Monday | Appreciation | Fun, Historical |
| National First-Foot Day | Cultural | Festivities, Historical |
| Ring a Bell Day | Special Interest | Appreciation, Historical |
| Sudan Independence Day | Federal | Civic, Historical |
| Ancestry Day | Appreciation | Civic, Federal, Historical |
| Reconquest Day | Federal | Historical, Military, Spanish |
| Saint Basil's Day | Religious | Catholic, Christian, Historical |
| Dimpled Chad Day | Special Interest | American, Historical |
| Tom Thumb Day | Arts & Entertainment | Celebrity, Historical |
| Twelfth Night | Religious | Christian, Festivities, Historical |
| National Smith Day | Special Interest | Family, Fun, Historical |
| Distaff Day | Cultural | Fashion, Historical, Women |
| The Baptism of the Lord | Religious | Catholic, Christian, Historical |
| Argyle Day | Cultural | Fashion, Historical |
| Coming of Age Day | Cultural | Festivities, Historical |
| Balloon Ascension Day | Fun | Activities, Historical, Technology |
| Panama's Martyrs' Day | Federal | Civic, Cultural, Historical |
| League of Nations Day | Special Interest | Educational, Historical |
| Birth anniversary of National Artist Atang de la Rama | Arts & Entertainment | Historical |
| Kosrae Constitution Day | Federal | Civic, Cultural, Historical |
| Learn Your Name In Morse Code Day | Special Interest | Activities, Historical, Technology |
| National Arkansas Day | Federal | Civic, Historical |
| Cuckoo Dancing Week | Arts & Entertainment | Celebrity, Historical, Pop Culture |
| Remembrance Day | Federal | Appreciation, Historical |
| Calennig | Federal | Cultural, Festivities, Historical |
| Korean American Day | Federal | Historical |
| Public Radio Broadcasting Day | Arts & Entertainment | Historical, Technology |
| Stephen Foster Memorial Day | Arts & Entertainment | Historical, Music |
| Cesarean Section Day | Health | Historical, Safety, Women |
| Feast of the Ass Day | Religious | Christian, Festivities, Historical |
| Novy God (Russian New Year) | Federal | Cultural Holidays, Festivities, Historical |
| Ratification Day | Special Interest | American, Federal, Historical |
| Civil Rights Day | Federal | Civic, Historical |
| Idaho Human Rights Day | Federal | Appreciation, Civic, Historical |
| Indian Army Day | Special Interest | Historical, Indian Holidays, Military |
| Makar Sankranti | Religious | Hindu, Historical, Indian Holidays |
| Martin Luther King Jr. Day | Federal | Historical |
| Printing Ink Day | Fun | Educational, Historical, Work |
| Signing of the Peace Accords | Special Interest | Federal, Historical |
| Benjamin Franklin Day | Special Interest | American, Appreciation, Historical |
| Cable Car Day | Special Interest | Appreciation, Educational, Historical |
| National Bootlegger’s Day | Food & Beverage | Beverage, Historical, Liquor |
| National Michigan Day | Appreciation | American, Historical |
| Brew a Potion Day | Special Interest | Activities, Historical, Weird National |
| Guru Gobind Singh Jayanti | Federal | Historical, Indian Holidays |
| Inauguration Day | Federal | Civic, Historical |
| Dance of the Seven Veils Day | Religious | Christian, Cultural, Historical |
| Wellington Anniversary Day | Federal | Appreciation, Civic, Historical |
| Paul Pitcher Day | Special Interest | Christian, Festivities, Historical |
| Talk Like a Grizzled Prospector Day | Fun | Funny, Historical |
| Unification Day | Federal | Civic, Historical |
| A Room Of One’s Own Day | Cause | Historical, Women |
| Burns Night | Cultural | Historical |
| NASA's Day of Remembrance | Special Interest | Appreciation, Historical |
| National Florida Day | Appreciation | American, Historical |
| Australia Day | Federal | Cultural, Historical |
| Duarte Day | Cultural | Federal, Historical |
| Indian Republic Day | Federal | Cultural, Historical |
| Auschwitz Liberation Day | Special Interest | German, Historical, Jewish |
| Holocaust Memorial Day | Special Interest | Historical, Jewish, Military |
| International Holocaust Remembrance Day | Federal | Awareness, Historical, Jewish |
| Vietnam Peace Day | Special Interest | Historical, Military |
| Christa McAuliffe Day | Special Interest | American, Appreciation, Historical |
| José Martí's Birthday Memorial | Special Interest | Historical |
| Julian Felipe Day | Federal | Appreciation, Birthdays, Historical |
| Auckland Anniversary Day | Federal | Appreciation, Civic, Historical |
| Kansas Day | Federal | Appreciation, Historical |
| National Carnation Day | Special Interest | American, Appreciation, Historical |
| Nelson Anniversary Day | Federal | Civic, Historical |
| Northland Anniversary Day | Federal | Civic, Historical |
| Martyrs' Day | Federal | Civic, Historical, Indian Holidays |
| Nauru Independence Day | Federal | Civic, Cultural, Historical |
| African American Heritage Month | Cultural | American, Appreciation, Historical |
| An Affair to Remember Month | Arts & Entertainment | Appreciation, Historical, Movie |
| Black History Month | Cultural | Activities, Historical |
| From Africa to Virginia Month | Special Interest | Awareness, Historical |
| International Month of Black Women in the Arts | Special Interest | Historical, Women |
| Women’s Role in History Month | Special Interest | Awareness, Historical, Women |
| Abolition of Slavery Day | Federal | Awareness, Civic, Historical |
| Day of Remembrance and Respect to Victims of the Communist Regime | Special Interest | Awareness, Civic, Historical |
| Federal Territory Day | Federal | Civic, Historical |
| Heroes' Day | Appreciation | Appreciation, Awareness, Historical |
| National Freedom Day | Federal | Historical |
| National Texas Day | Federal | Appreciation, Civic, Historical |
| Treaty of Guadalupe Hidalgo | Special Interest | American, Federal, Historical |
| Anniversary of the Liberation of the Battle of Manila | Federal | Civic, Educational, Historical |
| Commemoration of the Batepá Massacre | Federal | Awareness, Cultural, Historical |
| Four Chaplains Day | Special Interest | Appreciation, Historical |
| Mozambican Heroes Day | Federal | Appreciation, Civic, Historical |
| The Day the Music Died | Arts & Entertainment | Cultural, Historical, Music |
| Angola Liberation Day | Federal | Civic, Historical |
| National Day Sri Lanka | Federal | Civic, Festivities, Historical |
| Philippine-American War Memorial Day | Special Interest | Cultural Holidays, Historical |
| Feast of St Agatha | Religious | Catholic, Christian, Historical |
| Liberation Day San Marino | Federal | Civic, Historical |
| Unity Day Burundi | Federal | Civic, Historical |
| Ronald Reagan Day | Special Interest | American, Appreciation, Historical |
| Sami National Day | Cultural | Awareness, Cultural Holidays, Historical |
| Waitangi Day | Federal | Civic, Cultural, Historical |
| National Iowa Day | Special Interest | American, Historical |
| Preseren Day | Appreciation | Appreciation, Historical |
| Gwyl Mabsant | Religious | Festivities, Historical |
| Scout Sabbath | Religious | Historical, Jewish |
| St Maroun Day | Religious | Christian, Historical |
| All the News That's Fit to Print Day | Special Interest | Appreciation, Awareness, Historical |
| Feast of St. Paul's Shipwreck | Special Interest | Christian, Historical |
| National Umbrella Day | Arts & Entertainment | Cultural, Historical |
| Islamic Revolution Day | Religious | Historical, Islamic |
| National Foundation Day | Federal | Civic, Historical |
| Darwin Day | Appreciation | Educational, Historical |
| Georgia Day | Federal | American, Civic, Historical |
| Oatmeal Monday | Food & Beverage | Breakfast, Healthy Food, Historical |
| Union Day | Federal | Civic, Historical |
| Canada's Agriculture Day | Special Interest | Awareness, Food, Historical |
| Frederick Douglass Day | Special Interest | American, Educational, Historical |
| National Ferris Wheel Day | Special Interest | Fun, Historical |
| Rafik Hariri Memorial Day | Federal | Appreciation, Civic, Historical |
| Liberation Day Afghanistan | Federal | Civic, Historical |
| National Wisconsin Day | Special Interest | American, Appreciation, Historical |
| Remember the Maine Day | Federal | Historical, Military |
| Sovereignty Day of Serbia | Federal | Historical |
| Susan B Anthony Day | Special Interest | Appreciation, Educational, Historical |
| Total Defense Day | Cause | Civic, Federal, Historical |
| Elizabeth Peratrovich Day | Special Interest | Appreciation, Educational, Historical |
| Restoration of the State Day in Lithuania | Cause | Civic, Cultural, Historical |
| February 17th Revolution | Cause | Civic, Historical |
| Kosovo Independence Day | Special Interest | Awareness, Historical |
| Libyan Revolution Day | Special Interest | Awareness, Historical |
| Gambia Independence Day | Federal | Civic, Cultural, Historical |
| Pluto Day | Special Interest | Appreciation, Educational, Historical |
| Constantin Brancusi Day | Arts & Entertainment | Cultural, Historical |
| Daisy Gatson Bates Day | Federal | Appreciation, Educational, Historical |
| Iwo Jima Day | Special Interest | Appreciation, Historical |
| Presidents' Day | Federal | Historical |
| Shivaji Jayanti | Cultural | Historical, Indian Holidays |
| The Day of Illustrious Puerto Ricans | Federal | Appreciation, Historical |
| Mizoram State Day | Special Interest | Appreciation, Educational, Historical |
| Father Lini Day | Federal | Appreciation, Civic, Historical |
| Language Martyrs' Day | Federal | Cultural, Cultural Holidays, Historical |
| Robert Gabriel Mugabe National Youth Day | Federal | Civic, Historical |
| Day of Fraternity and Cohesion | Federal | Awareness, Civic, Historical |
| National California Day | Appreciation | American, Historical |
| Scouts Founder's Day | Special Interest | Awareness, Historical |
| St. Lucia Independence Day | Federal | Civic, Historical |
| EDSA People Power Commemoration Week | Cultural | Appreciation, Historical |
| Defender of the Fatherland Day | Federal | Historical, Military |
| Guyana Republic Day | Cultural | Appreciation, Festivities, Historical |
| National Day Brunei | Federal | Civic, Cultural, Historical |
| The Emperor's Birthday | Federal | Cultural, Historical |
| Yukon Heritage Day | Fun | Canadian, Historical |
| Dragobete | Cultural | Appreciation, Historical, Love |
| Edward Dickinson Baker Day | Special Interest | American, Appreciation, Historical |
| Estonia Independence Day | Federal | Cultural, Historical |
| Floating Lanterns Festival | Cultural | Appreciation, Festivities, Historical |
| Lantern Festival | Cultural | Festivities, Historical |
| Choiseul Province Day | Special Interest | Civic, Cultural, Historical |
| Day of Liberation and Innovation | Special Interest | Historical, Military |
| EDSA Revolution Anniversary | Cause | Awareness, Historical |
| National Day Kuwait | Federal | Cultural, Historical |
| People Power Revolution | Federal | Civic, Historical |
| Soviet Occupation Day | Special Interest | Cultural, Historical |
| Kuwait Liberation Day | Federal | Educational, Historical |
| Museum Advocacy Days | Special Interest | Books, Conservation, Historical |
| Special Operations Forces Day | Federal | Historical, Military |
| 228 Memorial Day | Cause | Historical |
| Andalusia Day | Federal | Civic, Historical |
| Feast of Saint Vartan | Religious | Catholic, Cultural, Historical |
| Floral Design Day | Arts & Entertainment | Cultural, Historical |
| National Customized Wheel and Tire Day | Special Interest | Appreciation, Historical, Lifestyle |
| Asiatic Fleet Memorial Day | Special Interest | American, Appreciation, Historical |
| Independence Movement Day | Federal | Civic, Educational, Historical |
| National Black Women in Jazz and the Arts Day | Arts & Entertainment | Appreciation, Historical, Women |
| National Minnesota Day | Federal | American, Appreciation, Historical |
| Adwa Victory Day | | Civic, Festivities, Historical |
| American Citizenship Day | Federal | Civic, Historical |
| James Ronald Webster Day | Federal | Appreciation, Birthdays, Historical |
| Bulgaria Liberation Day | Federal | Civic, Historical, Military |
| Martyrs' Day in Malawi | Appreciation | Appreciation, Civic, Historical |
| Missouri Compromise Day | Federal | American, Civic, Historical |
| Benjamin Harrison Day | Special Interest | American, Historical |
| Casimir Pulaski Day | Appreciation | American, Birthdays, Historical, Military |
| Guam Discovery Day | Federal | Civic, Cultural, Historical |
| Holy Experiment Day | Special Interest | American, Historical |
| Custom Chief's Day | Cultural | Appreciation, Federal, Historical |
| Alamo Day | Special Interest | Awareness, Historical |
| Day of Memorial And Respect For Veterans | Federal | Appreciation, Historical, Military |
| Ghana Independence Day | Federal | Civic, Historical |
| Iraq Day Of Tolerance And Coexistence | Special Interest | Awareness, Historical |
| Alexander Graham Bell Day | Appreciation | Canadian, Historical, Technology |
| Jose Abad Santos Day | Federal | Civic, Historical |
| Middle Name Pride Day | Fun | Appreciation, Historical, Weird National |
| National Oregon Day | Federal | American, Cultural, Historical |
| Amerigo Vespucci Day | Appreciation | American, Historical |
| Bang Clang Day | Special Interest | Historical, Military |
| Genealogy Day | Special Interest | Family, Historical |
| Harriet Tubman Day | Federal | Appreciation, Civic, Historical |
| International Bagpipe Day | Arts & Entertainment | Fun, Historical, Music |
| Paper Money Day | Special Interest | American, Historical |
| Salvation Army Day | Religious | Appreciation, Christian, Historical |
| Tibetan Uprising Day | Cause | Historical |
| Girl Scout Week | Cause | Appreciation, Historical, Women |
| Canberra Day | Federal | Civic, Cultural, Historical |
| Commonwealth Day in Canada | Cultural | Canadian, Historical |
| Eight Hours Day | Federal | Civic, Historical, Work |
| Independence Restoration Day | Special Interest | Civic, Historical |
| Moshoeshoe's Birthday | Federal | Appreciation, Historical |
| National Heroes and Benefactors Day | Appreciation | Cultural, Historical |
| National Johnny Appleseed Day | Special Interest | Appreciation, Fruit, Historical |
| Taranaki Anniversary Day | Cultural | Civic, Cultural Holidays, Historical |
| Aztec New Year | Cultural | Festivities, Historical |
| Mauritius Independence Day | Federal | Civic, Festivities, Historical |
| Constitution Day in Andorra | Federal | Civic, Historical |
| Genius Day | Special Interest | Birthdays, Historical, Technology |
| 1848 Revolution Memorial Day | Federal | Federal, Historical |
| Brutus Day | Special Interest | Friendship, Historical |
| Ides of March | Cultural | Historical |
| J.J. Roberts Birthday | Appreciation | Awareness, Civic, Historical |
| Black Press Day | Special Interest | American, Awareness, Historical |
| Evacuation Day | Federal | American, Historical, Military |
| Evacuation Day in Massachusetts | Federal | Civic, Historical, Military |
| Ramon Magsaysay Memorial Day | Federal | Federal, Historical |
| Sheikh Mujibur Rahman Birthday | Appreciation | Civic, Historical |
| St. Patrick's Day | Cultural | Festivities, Historical |
| World Folktales & Fables Week | Arts & Entertainment | Appreciation, Books, Historical |
| Benito Juarez Birthday Memorial | Federal | Appreciation, Civic, Historical |
| Goddess Of Fertility Day | Cultural | Educational, Historical, Women |
| National Anthem and Flag Day in Aruba | Federal | Civic, Festivities, Historical |
| National Supreme Sacrifice Day | Special Interest | Appreciation, Historical, Military |
| Operation Iraqi Freedom Day | Special Interest | American, Historical, Military |
| St Joseph's Day Venezuela | Religious | Catholic, Christian, Historical |
| Feast of Saint Joseph | Religious | Catholic, Christian, Historical |
| Big Bang Day | Special Interest | Education, Historical, Technology |
| Namibia Independence Day | Federal | Civic, Historical |
| Race Relations Day | Cause | Awareness, Historical |
| Emancipation Day (Puerto Rico) | Federal | Civic, Cultural, Historical |
| Founding Anniversary of the Philippine Army | Federal | Appreciation, Civic, Historical |
| Nauryz Day | Cultural | Cultural Holidays, Festivities, Historical |
| Nevruz Day | Cultural | Appreciation, Cultural, Historical |
| Talk Like William Shakespeare Day | Fun | Fun, Historical, Weird National |
| Near Miss Day | Special Interest | Environment, Historical, Technology |
| Pakistan Day | Cultural | Historical |
| South African Liberation Day | Federal | Awareness, Civic, Historical |
| Commonwealth Covenant Day | Federal | American, Civic, Historical |
| Day of Remembrance for Truth and Justice | Federal | Awareness, Civic, Historical |
| Purim | Religious | Festivities, Historical, Jewish |
| Anniversary Of The Arengo | Federal | Civic, Historical |
| Bed-in for Peace Day | Cause | Awareness, Historical |
| Greek Independence Day | Federal | Civic, Cultural, Historical |
| Maryland Day | Federal | Historical |
| National Dante Day | Special Interest | Appreciation, Cultural, Historical |
| Old New Year's Day | Cause | Festivities, Historical |
| Struggle For Human Rights Day | Federal | Civic, Historical |
| Independence Day of Bangladesh | Federal | Civic, Historical |
| National Day of Life, Peace and Justice | Special Interest | Cultural, Historical |
| Prince Kuhio Day | Federal | Civic, Educational, Historical |
| Maundy Thursday | Religious | Catholic, Christian, Historical |
| Commemoration Of Boganda | Federal | Appreciation, Civic, Historical |
| Good Friday | Religious | Christian, Historical |
| Knights Of Columbus Founder's Day | Appreciation | Historical |
| Niagara Falls Runs Dry Day | Special Interest | Awareness, Festivities, Historical |
| Vietnam Veterans Day | Federal | Appreciation, Civic, Historical |
| Holy Saturday | Religious | Catholic, Christian, Historical |
| National I Am In Control Day | Health | American, Historical |
| Orthodox Holy Saturday | Religious | Christian, Historical |
| Easter | Religious | Catholic, Christian, Historical |
| Eiffel Tower Day | Appreciation | French, Historical |
| International Hug a Medievalist Day | Special Interest | Cultural, Fun, Historical |
| Transfer Day | Federal | American, Civic, Historical |
| Genocide Awareness Month | Cause | Awareness, Educational, Historical |
| Parliamentary Law Month | Special Interest | American, Historical, Military |
| World Landscape Architecture Month | Special Interest | Appreciation, Historical |
| Assyrian New Year | Religious | Cultural, Historical |
| Cyprus National Holiday | Federal | Civic, Historical |
| Martyrdom of Imam Ali | Religious | Historical, Islamic |
| National One Cent Day | Special Interest | American, Cultural, Historical |
| Nature Day | Special Interest | Cultural, Historical |
| Odisha Day | Cultural | Festivities, Historical, Indian Holidays |
| Day of the Veterans | Federal | Appreciation, Civic, Historical |
| Pascua Florida Day | Cause | American, Civic, Historical |
| Southland Anniversary Day | Federal | Appreciation, Civic, Historical |
| Union Day of Belarus and Russia | Cause | Educational, Historical |
| Pony Express Day | Fun | American, Historical |
| Weed Out Hate Day | Fun | American, Historical, Love |
| International Day for Mine Awareness and Assistance in Mine Action | Cause | Awareness, Historical, International |
| Näfelser Fahrt | Federal | Civic, Historical, Military |
| Senegal Independence Day | Federal | Civic, Historical |
| Go For Broke Day | Federal | Appreciation, Historical |
| National Nebraska Day | Cause | American, Historical |
| Army Day | Federal | Civic, Federal, Historical |
| President Ntaryamira Day | Federal | Appreciation, Civic, Historical |
| Day of Remembrance of the Victims of the Rwanda Genocide | Cause | Awareness, Civic, Historical |
| International Day of Reflection on the Genocide in Rwanda | Special Interest | Awareness, Historical |
| International Snailpapers Day | Special Interest | Appreciation, Historical |
| Karume Day | Federal | Civic, Historical |
| Metric System Day | Special Interest | Educational, Historical |
| Day of Romas | Cultural | Awareness, Cultural Holidays, Historical |
| Appomattox Day | Cultural | American, Educational, Historical |
| Bataan Day | Federal | Appreciation, Civic, Historical |
| Jenkins Ear Day | Special Interest | Educational, Historical, Military |
| Kosovo Constitution Day | Federal | Awareness, Festivities, Historical |
| National Cherish an Antique Day | Special Interest | Family, Historical |
| National Former Prisoner Of War Recognition Day | Special Interest | American, Appreciation, Historical |
| National Winston Churchill Day | Federal | Historical |
| Vimy Ridge Day | Special Interest | Appreciation, Canadian, Historical |
| Anniversary of the Battle of Rivas | Cultural | Appreciation, Historical, Military |
| Cosmonautics Day | Special Interest | Appreciation, Historical |
| Halifax Day | Federal | American, Festivities, Historical |
| International Day for Human Space Flight | Special Interest | Educational, Historical, Technology |
| National Fast and Prayer Day | Religious | Activities, Historical |
| Yuri's Night | Special Interest | Educational, Historical, Technology |
| Thomas Jefferson Day | Special Interest | American, Appreciation, Historical |
| Unfairly Prosecuted Persons Day | Special Interest | Awareness, Historical |
| Vaisakhi / Baisakhi / Vishu | Religious | Festivities, Historical, Indian Holidays |
| Americas Day | Federal | Appreciation, Historical |
| Pan American Day | Federal | Awareness, Civic, Historical |
| Declaration of Malacca as a Historical City | Cause | Awareness, Educational, Historical |
| Titanic Remembrance Day | Special Interest | Appreciation, Historical |
| Birthday of Jose de Diego | Special Interest | Appreciation, Historical |
| Malbec World Day | Food & Beverage | Drinking, Historical, Liquor |
| Hung Kings Festival | Cultural | Festivities, Historical |
| National Lineman Appreciation Day | Appreciation | Career, Historical, Work |
| National Velociraptor Awareness Day | Appreciation | Educational, Historical, Movie |
| John Parker Day | Special Interest | Appreciation, Historical, Military |
| Landing of the 33 Patriots Day | Federal | Civic, Historical |
| Battle of San Jacinto | Federal | Civic, Historical, Military |
| Mahavir Jayanti | Religious | Educational, Historical |
| National Yellow Bat Day | Federal | American, Historical, Military |
| Tiradentes Day | Cultural | Historical |
| Tiradentes' Day | Federal | Appreciation, Civic, Historical |
| National Coin Week | Special Interest | Historical, Hobby, Lifestyle |
| Landing of the 33 Patriots Day | Federal | Civic, Historical, Military |
| Oklahoma Day | Cultural | American, Cultural Holidays, Historical |
| Passover | Religious | Festivities, Historical, Jewish |
| National Sovereignty and Children's Day | Special Interest | Children, Federal, Historical |
| Shakespeare Day | Arts & Entertainment | Appreciation, Books, Historical |
| Slay a Dragon Day | Religious | Fun, Historical |
| St. George's Day | Federal | Historical |
| Talk Like Shakespeare Day | Arts & Entertainment | Books, Historical |
| UN English Language Day | Special Interest | Cultural, Educational, Historical |
| Anzac Day | Federal | Historical, Military |
| East Meets West Day | Appreciation | German, Historical, Military |
| Freedom Day (Portugal) | Federal | Civic, Historical |
| International Delegate’s Day | Appreciation | Awareness, Historical, International |
| License Plates Day | Special Interest | American, Educational, Historical |
| National Liberation Day | Federal | Awareness, Civic, Historical |
| Sinai Liberation Day (Egypt) | Cause | Historical, International |
| The Feast of St Mark (Italy) | Religious | Christian, Historical |
| Richter Scale Day | Special Interest | Historical, Obscure, Technology |
| Day of Uprising Against Occupation | Federal | Civic, Historical |
| Freedom Day (South Africa) | Cause | Civic, Federal, Historical |
| International Marconi Day | Special Interest | Appreciation, Historical, Technology |
| Lapu Lapu Day | Cultural | Appreciation, Federal, Historical |
| Matanzas Mule Day | Animal | Historical, Military, Spanish |
| Morse Code Day | Special Interest | Appreciation, Historical, Technology |
| Sierra Leone Independence Day | Federal | Civic, Historical |
| Togo Independence Day (Togo) | Federal | Civic, Historical |
| Orthodox Palm Sunday | Religious | Christian, Historical |
| Asian American and Pacific Islander Heritage Month | Cause | Historical |
| Haitian Heritage Month | Special Interest | Appreciation, Cultural, Historical |
| Labor History Month | Special Interest | Appreciation, Historical, Work |
| Local and Community History Month | Cultural | Awareness, Historical |
| National Heritage Month | Cultural | Cultural Holidays, Historical |
| National Preservation Month | Cultural | Educational, Historical |
| Labour and Agriculture Day | Special Interest | Appreciation, Historical, Work |
| Marshall Islands Constitution Day | Federal | Civic, Historical |
| May Day | Federal | Christian, Civic, Historical |
| Polish National Flag Day | Special Interest | Appreciation, Historical |
| The Twelfth Day of Ridvan | Cultural | Cultural Holidays, Historical |
| Cross Day (El Salvador) | Cultural | Catholic, Festivities, Historical |
| National Montana Day | Federal | Appreciation, Civic, Historical |
| Greenery Day (Midori no Hi) | Appreciation | Environment, Historical |
| Kent State Shootings Remembrance | Appreciation | American, Historical |
| The 1940 Centennial | Federal | Civic, Historical |
| Yom HaShoah | Religious | Awareness, Historical, Jewish |
| Cinco de Mayo | Cultural | Cultural, Historical, Mexican |
| Europe Day | Federal | Appreciation, Cultural, Historical |
| Indian Arrival Day (Guyana) | Federal | Cultural, Ethnic, Historical |
| Liberation Day (Bevrijdingsdag) | Federal | Civic, Historical |
| Days of Remembrance | Cultural | Awareness, Educational, Historical |
| Jamestown Day | Cultural | Educational, Historical |
| Time of Remembrance and Reconciliation for those who Lost their Lives during WWII | Cause | Historical |
| Truman Day | Special Interest | American, Civic, Historical |
| Victory in Europe Day | Special Interest | German, Historical |
| White Lotus Day | Special Interest | Cultural, Historical |
| Ascencion Day (Saint Barthelemy) | Religious | Christian, Civic, Historical |
| Ascencion Day (Saint Martin) | Religious | Christian, Civic, Historical |
| Guernsey Liberation Day | Federal | Civic, Festivities, Historical |
| Russian Victory Day | Federal | Historical, Military |
| National Washington Day | Federal | Appreciation, Civic, Historical |
| National Technology Day | Special Interest | Historical, Indian Holidays, Technology |
| National Train Day | Special Interest | Awareness, Historical, Technology |
| National Windmill Day | Special Interest | Environment, Historical |
| Somerset Day | Special Interest | Appreciation, Cultural, Historical |
| Mothers at the Wall Day | Cause | Family, Historical |
| National Hospital Day | Health | American, Historical |
| Yom HaAtzmaut | Federal | Federal, Historical, Jewish |
| Yom HaZikaron | Religious | Awareness, Historical |
| Memorial Day in Israel | Federal | Civic, Historical |
| Tulip Day | Special Interest | American, Historical |
| Paraguay Independence Day | Federal | Historical |
| National Law week | Federal | Civic, Historical |
| Battle of Las Piedras | Federal | Festivities, Historical, Military |
| Haitian Flag Day | Federal | Civic, Cultural, Historical |
| State Flag of Turkmenistan Day | Federal | Civic, Historical |
| Malcolm X Day | Cultural | Appreciation, Historical |
| Whit Sunday | Religious | Catholic, Christian, Historical |
| East Timor Independence Day | Federal | Appreciation, Civic, Historical |
| Victoria Day | Cultural | Canadian, Historical |
| Weights and Measures Day | Special Interest | Appreciation, Historical |
| National American Red Cross Founder’s Day | Health | Appreciation, Historical |
| Navy Day Chile | Federal | Civic, Historical, Military |
| Pesach Sheni | Religious | Historical, Jewish |
| Harvey Milk Day | Federal | Civic, Historical, LGBTQ |
| National Maritime Day | Federal | Civic, Historical, Military |
| Slavery Abolition Day (Martinique) | Special Interest | Awareness, Civic, Historical |
| Bermuda Day | Federal | Cultural, Historical |
| Empire Day | Federal | Cultural, Historical |
| Independence Day in Eritrea | Federal | Civic, Festivities, Historical |
| The Battle of Pichincha Day | Federal | Civic, Historical |
| African Liberation Day | Cultural | Awareness, Historical, International |
| Jordan Independence Day | Federal | Civic, Historical |
| May Revolution Day | Federal | Civic, Historical, Spanish |
| General Prayer Day | Religious | Catholic, Christian, Historical |
| Georgia Independence Day | Federal | Civic, Historical |
| Independence Day (Guyana) | Federal | Civic, Festivities, Historical |
| Lag BaOmer | Religious | Festivities, Historical, Jewish |
| National Sorry Day | Cause | Historical |
| Memorial Day | Federal | Family, Historical, Military |
| Slavery Abolition Day (Guadeloupe) | Federal | Awareness, Civic, Historical |
| Spring Bank Holiday | Cultural | Historical, Work |
| Abolition Day (Saint Martin) | Special Interest | Awareness, Historical |
| National Day of Ethiopia | Federal | Civic, Cultural, Historical |
| End of the Middle Ages Day | Special Interest | Cultural, Historical, International |
| Oak Apple Day | Special Interest | Federal, Historical |
| Skyscraper Month | Special Interest | Appreciation, Historical |
| Dinosaur Day | Animal | Appreciation, Educational, Historical |
| Samoa Independence Day | Federal | Civic, Educational, Historical |
| Statehood Day in Kentucky | Federal | American, Civic, Historical |
| Statehood Day in Tennessee | Federal | American, Civic, Historical |
| National First Ladies Day | Special Interest | Appreciation, Historical |
| Platinum Jubilee bank holiday | Federal | Cultural, Historical |
| Republic Day Italy | Federal | Cultural, Historical |
| Mabo Day | Federal | Appreciation, Civic, Historical |
| Uganda Martyrs Day | Federal | Christian, Educational, Historical |
| Western Australia Day | Cultural | Historical |
| America The Beautiful Week | Special Interest | American, Historical, Music |
| Constitution Day | Federal | Cultural, Historical |
| Khordad National Uprising in Iran | Federal | Civic, Historical |
| Caves and Karst Day | Special Interest | Fun, Historical |
| D-Day | Special Interest | Civic, Historical, Military |
| National Yo-Yo Day | Special Interest | Activities, Fun, Historical |
| Queensland Day | Cultural | Civic, Historical |
| Anniversary of the Memorandum of the Slovak Nation | Special Interest | Appreciation, Cultural, Historical |
| Daniel Boone Day | Special Interest | American, Appreciation, Historical |
| Sette Giugno | Federal | Civic, Historical |
| Bounty Day | Federal | Civic, Festivities, Historical |
| Temotu Province Day | Federal | Civic, Historical |
| Thomas Paine Day | Special Interest | Appreciation, Historical |
| Day of Murcia | Federal | Civic, Cultural, Historical |
| National Heroes Day of Uganda | Federal | Appreciation, Historical, Military |
| Abolition Day | Federal | Awareness, Civic, Historical |
| Portugal Day | Federal | Cultural, Historical |
| Slavery Abolition Day (French Guiana) | Special Interest | Awareness, Historical |
| King Kamehameha Day | Cultural | American, Festivities, Historical |
| Chaco Armistice Day | Federal | Civic, Historical, Military |
| Democracy Day | Federal | Civic, Historical |
| National Loving Day | Relationship | Historical, Love |
| Peace Day | Federal | Historical, Military |
| Philippines Independence Day | Cultural | Festivities, Historical |
| Russia Day | Federal | Civic, Historical, Military |
| Feast of St. Anthony (Spain) | Religious | Christian, Historical |
| Maharana Pratap Jayanti | Religious | Cultural, Hindu, Historical |
| Army Birthday | Federal | Historical, Military |
| Falkland Islands Liberation Day | Federal | Civic, Historical |
| Flag Day | Federal | American, Civic, Historical |
| Magna Carta Day | Special Interest | Historical, International |
| National Megalodon Day | Animal | Educational, Historical |
| National Salvation Day | Federal | Civic, Historical |
| YMA Day | Federal | Cultural, Historical, Indian Holidays |
| Martyrdom of Guru Arjan Dev Sahib | Cultural | Historical, Indian Holidays |
| Youth Day | Federal | Awareness, Civic, Historical |
| Bunker Hill Day | Special Interest | American, Historical |
| Iceland Independence Day | Federal | Civic, Festivities, Historical |
| Miguel de Guemes Day | Federal | Civic, Historical |
| Artigas Birthday | Federal | Birthdays, Civic, Historical |
| Juneteenth | Federal | American, Historical |
| Martyrs' Day in Eritrea | Federal | Civic, Historical |
| National Flag Day in Argentina | Cultural | Appreciation, Festivities, Historical |
| National West Virginia Day | Federal | American, Civic, Historical |
| Aymara New Year | Cultural | Civic, Cultural Holidays, Historical |
| Canada's National Indigenous Peoples Day | Cultural | Canadian, Civic, Historical |
| International Day of Yoga | Health | Activities, Historical |
| Martyrs' Day in Togo | Federal | Civic, Historical |
| National Arizona Day | Federal | American, Civic, Historical |
| Sant Guru Kabir Jayanti | Religious | Cultural, Historical, Indian Holidays |
| Estonia Victory Day | Federal | Appreciation, Awareness, Historical |
| Jura Independence Day | Cultural | Federal, Historical |
| National Day of Luxembourg | Federal | Civic, Festivities, Historical |
| Eid-e-Ghadir | Religious | Historical, Islamic |
| International St. Johns Day | Religious | Christian, Historical, Summer |
| Inti Raymi | Cultural | Festivities, Historical, Pagan |
| Croatia Independence Day | Federal | Civic, Historical |
| International Day of the Seafarer | Federal | Civic, Historical, International |
| Mozambique Independence Day | Federal | Civic, Festivities, Historical |
| Statehood Day | Federal | Appreciation, Civic, Historical |
| Flag Day of Romania | Cultural | Civic, Cultural, Historical |
| Madagascar Independence Day | Federal | Civic, Historical |
| National Barcode Day | Special Interest | Historical, Technology |
| Somalia Independence Day | Federal | Civic, Cultural, Historical |
| Attwari | Federal | Civic, Historical |
| Day of National Unity (Tajikistan) | Federal | Civic, Historical |
| Djibouti Independence Day | Federal | Civic, Historical |
| Tajikistan Unity Day | Federal | Civic, Historical |
| St. Vitus Day | Religious | Appreciation, Historical |
| Stonewall Riots Anniversary | Cultural | Awareness, Cultural, Historical |
| Ukraine Constitution Day | Federal | Civic, Historical |
| Internal Autonomy Day | Federal | Civic, Festivities, Historical |
| Saint Peter and Saint Paul Day | Religious | Catholic, Historical |
| Seychelles Independence Day | Federal | Civic, Festivities, Historical |
| Congo Independence Day | Federal | Civic, Historical |
| Log Cabin Day | Special Interest | Appreciation, Historical, Lifestyle |
| Philippine-Spanish Friendship Day | Federal | Civic, Cultural, Historical |
| CPC Founding Day | Federal | Civic, Educational, Historical |
| Ghana Republic Day | Federal | Cultural, Historical |
| Hong Kong Special Administrative Region Establishment Day | Federal | Federal, Historical |
| Keti Koti | Special Interest | Historical |
| Ketikoti | Federal | Cultural, Festivities, Historical |
| Madeira Day | Cultural | Cultural Holidays, Historical |
| National Television Heritage Day | Arts & Entertainment | Historical, Pop Culture, Technology |
| Sir Seretse Khama Day | Federal | Historical |
| Territory Day | Federal | Historical |
| National Anthem and Flag Day in Curaçao | Federal | Appreciation, Civic, Festivities, Historical |
| Zambia Unity Day | Federal | Civic, Historical |
| Belarus Independence Day | Federal | Cultural, Historical |
| V.I. Emancipation Day | Cultural | Educational, Historical |
| Alice in Wonderland Day | Arts & Entertainment | Books, Children, Historical |
| Filipino-American Friendship Day | Cause | Civic, Friendship, Historical |
| Independence Day | Federal | Activities, Civic, Historical |
| Philippines Republic Day | Federal | Federal, Historical |
| Rwanda Liberation Day | Federal | Civic, Historical |
| Independence Day in Algeria | Federal | Appreciation, Civic, Historical |
| National Bikini Day | Arts & Entertainment | Historical, Summer |
| Saints Cyril and Methodius | Religious | Christian, Cultural, Historical |
| Venezuela Independence Day | Federal | Awareness, Civic, Historical |
| Anniversary of the Coronation of King Mindaugas | Federal | Awareness, Historical |
| Malawi Independence Day | Federal | Cultural, Federal, Historical |
| Saba Saba Day in Tanzania | Federal | Civic, Federal, Historical |
| Solomon Islands Independence Day | Federal | Civic, Federal, Historical |
| Martyrdom of the Bab | Religious | Cultural, Historical, Pagan |
| Nunavut Day | Federal | Activities, Canadian, Historical |
| Palau Constitution Day | Federal | Civic, Cultural, Historical |
| State Rebellion Day | Federal | Awareness, Civic, Historical |
| Bahamas Independence Day | Federal | Civic, Historical |
| Feast of St. Rosalia | Religious | Christian, Festivities, Historical |
| National Clerihew Day | Arts & Entertainment | Appreciation, Historical, Hobby |
| National Wyoming Day | Federal | American, Historical, Women |
| Bowdler's Day | Special Interest | Awareness, Cultural, Historical |
| Celebration of the Golden Spurs | Cultural | Civic, Festivities, Historical |
| Day of the Flemish Community | Fun | Historical |
| Naadam Holiday | Cultural | Festivities, Historical |
| Battle of the Boyne | Federal | Federal, Historical |
| Etch A Sketch Day | Special Interest | Activities, Fun, Historical |
| Orangemen's Day | Cause | Christian, Historical, Irish |
| National Delaware Day | Federal | American, Historical |
| Bastille Day | Arts & Entertainment | French, Historical, Pop Culture |
| Bastille day (Saint Martin) | Federal | French, Historical |
| Emmeline Pankhurst Day | Federal | Federal, Historical, Women |
| Fete de la Federation | Federal | Historical |
| H.M. The Sultan's Birthday (in lieu) | Federal | Birthdays, Historical |
| President's Day in Botswana | Federal | Appreciation, Civic, Historical |
| The Democracy and National Unity Day of Turkey | Federal | Civic, Federal, Historical |
| Manu’a Cession Day (in lieu) | Federal | Civic, Historical |
| Saune Sankranti | Cultural | Historical |
| Korean Constitution Day | Federal | Federal, Historical |
| Wrong Way Corrigan Day | Special Interest | American, Historical, Technology |
| Birthday of Don Luis Munoz Rivera | Special Interest | Appreciation, Historical |
| Nelson Mandela International Day | Appreciation | Historical |
| Uruguay Constitution Day | Federal | Federal, Historical |
| Liberation Day/FSLN Revolution Day | Federal | Civic, Festivities, Historical |
| Martyr's Day in Myanmar | Federal | Civic, Cultural, Historical |
| The Sandinista Revolution Day | Federal | Awareness, Civic, Historical |
| Colombia Independence Day | Federal | Civic, Historical |
| Crown Prince Haakon's Day | Cultural | Appreciation, Birthdays, Historical |
| National Moon Day | Special Interest | American, Historical, Technology |
| NATIONAL PENNSYLVANIA DAY | Federal | Civic, Historical |
| Space Exploration Day | Special Interest | American, Appreciation, Historical |
| Asalha Puja | Religious | Buddhist, Historical |
| Belgium Independence Day | Federal | Civic, Cultural, Historical |
| Guam Liberation Day | Federal | American, Civic, Historical |
| NATIONAL RAT CATCHER’S DAY | Special Interest | German, Historical, Weird National |
| Sarawak Day | Federal | Historical, Military |
| Fast of Tammuz | Religious | Cultural, Historical, Jewish |
| National Amelia Earhart Day | Special Interest | Appreciation, Celebrity, Historical |
| Pioneer Day | Cultural | Christian, Historical |
| Commemoration of the Assault on Moncada | Federal | Historical |
| Guanacaste Day | Federal | Cultural, Festivities, Historical |
| Puerto Rican Constitution Day | Federal | Civic, Historical |
| Tunisia Republic Day | Federal | Civic, Historical |
| Liberia Independence Day | Federal | Civic, Historical |
| Maldives Independence Day | Federal | Civic, Festivities, Historical |
| National Rebellion Day (Cuba) | Federal | Civic, Cultural, Historical |
| Bagpipe Appreciation Day | Appreciation | Cultural, Historical, Music |
| Birthday of Dr. Jose Celso Barbosa | Federal | Civic, Historical |
| National Korean War Veterans Armistice Day | Special Interest | Awareness, Historical, Military |
| National New Jersey Day | Federal | American, Appreciation, Historical |
| Norfolk Day | Cultural | Cultural Holidays, Historical |
| Anniversary of the Fall of Fascism and Freedom Day | Federal | Appreciation, Historical |
| Baptism Day of Kyivan Rus | Religious | Christian, Cultural, Historical |
| Peru Independence Day | Federal | Civic, Cultural, Historical |
| Armed Forces Day (Guatemala) | Federal | Civic, Historical, Military |
| Martyrs' Day in South Sudan | Federal | Civic, Historical |
| Vanuatu Independence Day | Federal | Civic, Historical |
| Hawaii Flag day | Federal | Appreciation, Civic, Historical |
| Martyrdom Day of Shaheed Udham Singh | Federal | Cultural, Historical, Indian Holidays |
| Benin Independence Day | Federal | Cultural, Historical, International |
| Colorado Day | Cause | American, Historical |
| Emancipation Day (Guyana) | Federal | Civic, Cultural, Historical |
| Yorkshire Day | Cultural | Appreciation, Historical |
| Mary Prince Day | Religious | Historical, Women |
| Republic Day in North Macedonia | Federal | Civic, Federal, Historical, International |
| Makira-Ulawa Province Day | Federal | Appreciation, Civic, Historical |
| Mead Day | Food & Beverage | Beer, Drinking, Historical |
| Pidjiguiti Day | Federal | Appreciation, Awareness, Historical |
| Cook Islands Constitution Day | Federal | Cultural, Historical, International |
| U.S. Coast Guard Birthday | Federal | Historical, Military |
| Civic Holiday | Federal | Canadian, Festivities, Historical |
| Heritage Day in Alberta | Cultural | Canadian, Family, Historical |
| Natal Day | Federal | Canadian, Festivities, Historical |
| Terry Fox Day | Cause | Activities, Canadian, Historical |
| Hiroshima Day | Special Interest | Awareness, Historical |
| Jamaica Independence Day | Federal | Historical |
| Battle of Boyaca | Special Interest | Historical |
| Côte d'Ivoire Independence Day | Federal | Appreciation, Federal, Historical |
| National Lighthouse Day | Arts & Entertainment | Historical |
| National Dollar Day | Special Interest | Appreciation, Educational, Historical |
| Peace Festival in Augsburg | Religious | Christian, German, Historical |
| Nagasaki Memorial Day | Special Interest | Awareness, Historical |
| National Veep Day | Special Interest | American, Federal, Historical |
| Suriname Indigenous People's Day | Cultural | Cultural Holidays, Historical |
| Ecuador Independence Day | Federal | Cultural, Historical |
| Herbert Hoover Day | Federal | American, Civic, Historical |
| Chad Independence Day | Federal | Civic, Federal, Historical |
| Ingersoll Day | Special Interest | Appreciation, Historical |
| Mountain Day | Special Interest | Activities, Environment, Historical |
| US Victory Day | Federal | Civic, Historical |
| Fast of Ninth of Av | Religious | Cultural, Historical, Jewish |
| Anniversary of the Recovery Oued Ed-Dahab | Special Interest | Cultural Holidays, Historical |
| Falklands Day | Special Interest | Cultural, Historical |
| Navajo Code Talkers Day | Special Interest | Cultural, Educational, Historical |
| Pakistan Independence Day | Cultural | Historical |
| Pramuka Day | Special Interest | Activities, Cultural, Historical |
| Vigil of Assumption Day | Religious | Catholic, Historical |
| Assumption of Mary (Spain) | Religious | Catholic, Christian, Historical |
| Feast of Assumption (Chile) | Religious | Catholic, Christian, Historical |
| Flooding of the Nile | Special Interest | Cultural, Historical |
| Foundation of Old Panama City | Cultural | Civic, Historical |
| Founding of Asuncion in Paraguay | Federal | Civic, Festivities, Historical |
| Indian Independence Day | Cultural | Civic, Historical, Indian Holidays |
| Liberation Day | Federal | Civic, Festivities, Historical |
| Liechtenstein National Day | Federal | Civic, Historical |
| National Acadian Day | Cultural | Appreciation, Historical |
| Bennington Battle Day | Federal | American, Federal, Historical |
| National Airborne Day | Federal | American, Historical |
| Restoration Day (Dominican Republic) | Federal | Civic, Festivities, Historical |
| Baby Boomers Recognition Day | Special Interest | Appreciation, Elderly, Historical |
| Gabon Independence Day | Federal | Federal, Historical, International |
| National Massachusetts Day | Federal | American, Appreciation, Historical |
| Long Tan Day | Federal | Civic, Cultural, Historical |
| National Mail Order Catalog Day | Special Interest | Historical, Shopping |
| Afghanistan Independence Day | Federal | Civic, Historical |
| Discovery Day | Cultural | Canadian, Historical |
| National Aviation Day | Federal | Historical |
| San Martin Day | Federal | Civic, Historical |
| National Aviation Week | Special Interest | Educational, Historical, Technology |
| Anniversary of the Revolution of the King and the People | Special Interest | Federal, Historical |
| Hungary National Day | Federal | Cultural, Festivities, Historical |
| St. Stephen’s Day | Federal | Civic, Historical |
| Ninoy Aquino Day | Appreciation | Civic, Historical |
| Russia National Flag Day | Federal | Civic, Historical |
| National Valentino Day | Special Interest | Celebrity, Historical |
| Slavery Remembrance Day | Cause | Awareness, Educational, Historical |
| National Flag Day in Liberia | Federal | Awareness, Historical |
| Pluto Demoted Day | Special Interest | Historical, Technology |
| St Bartholomew History | Cultural | Christian, Historical |
| Ukraine Independence Day | Federal | Awareness, Civic, Historical |
| Vesuvius Day | Special Interest | Awareness, Educational, Historical |
| William Wilberforce Day | Special Interest | Appreciation, Historical |
| Day of Songun | Federal | Appreciation, Civic, Historical |
| Notting Hill Carnival | Cultural | Historical |
| Uruguay Independence Day | Federal | Awareness, Historical |
| National Heroes Day of Philippines | Federal | Civic, Federal, Historical |
| Women’s Equality Day | Cause | Civic, Historical, Women |
| Lyndon Baines Johnson Day | Federal | American, Civic, Historical |
| Moldova Independence Day | Federal | Civic, Historical |
| Founding Anniversary of the Senate | Federal | Civic, Federal, Historical |
| Individual Rights Day | Federal | Awareness, Historical, Lifestyle |
| National Uprising Day | Federal | Federal, Historical |
| Popular Consultation Day | Federal | Civic, Historical |
| Victory Day | Federal | Civic, Historical |
| Birth Anniversary of President Ramon Magsaysay | Federal | Birthdays, Historical |
| Independence Day | Federal | Civic, Historical |
| Kyrgyzstan Independence Day | Federal | Civic, Cultural Holidays, Historical |
| Trinidad and Tobago Independence Day | Federal | Civic, Federal, Historical |
| We Love Memoirs Day | Special Interest | Books, Educational, Historical |
| Bourbon Heritage Month | Food & Beverage | Appreciation, Drinking, Historical |
| National Velociraptor Awareness Month | Animal | Historical |
| Slovakia Constitution Day | Cultural | Civic, Federal, Historical |
| Calendar Adjustment Day | Special Interest | Awareness, Historical |
| Ceuta Day | Federal | Appreciation, Cultural, Historical |
| National Day of Vietnam | Federal | Civic, Festivities, Historical |
| VJ Day | Federal | Historical, Military |
| Foundation Day in San Marino | Cultural | Cultural Holidays, Federal, Historical |
| Merchant Navy Day | Special Interest | Awareness, Careers, Historical |
| Yamashita Surrender Day | Special Interest | Awareness, Historical |
| Martyrdom of Imam Reza | Religious | Cultural, Historical, Islamic |
| Bonaire Flag Day | Federal | Civic, Cultural, Historical |
| Swaziland Independence Day | Federal | Appreciation, Civic, Historical |
| Brazil Independence Day | Cultural | Festivities, Historical |
| Grandma Moses Day | Special Interest | Appreciation, Historical |
| Day of the Homeland | Cultural | German, Historical, Military |
| Our Lady of Meritxell Day | Federal | Cultural Holidays, Festivities, Historical |
| California Admission Day | Special Interest | American, Historical |
| Gibraltar National Day | Federal | Awareness, Civic, Historical |
| St. George's Caye Day | Federal | Civic, Historical |
| Martyrdom of Imam Hassan Asgari | Religious | Historical, Islamic |
| European Heritage Days | Cultural | German, Historical |
| Uncle Sam Day | Appreciation | American, Federal, Historical |
| Heritage Open Days | Cultural | Appreciation, Educational, Historical |
| National Virginia Day | Federal | American, Federal, Historical |
| Hispanic Heritage Month | Cultural | Historical, Spanish |
| El Salvador Independence Day | Federal | Civic, Historical |
| Guatemala Independence Day | Federal | Civic, Festivities, Historical |
| Honduras Independence Day | Federal | Civic, Educational, Historical |
| Shout of Dolores | Cultural | Catholic, Family, Historical |
| Malaysia Day | Cultural | Federal, Festivities, Historical |
| Mayflower Day | Special Interest | Awareness, Historical |
| National Trail of Tears Commemoration Day | Special Interest | Educational, Historical |
| Papua New Guinea Independence Day | Federal | Appreciation, Civic, Historical |
| Māori Language Week | Cultural | Cultural Holidays, Historical |
| Constitution Day | Federal | Historical |
| Smithsonian Day | Fun | American, Historical |
| Independence Day | Federal | Festivities, Fun, Historical |
| Day of the Glories of the Army | Federal | Historical, Military |
| Armenia Independence Day | Federal | Civic, Historical |
| Belize Independence Day | Federal | Civic, Historical |
| Chainmail Day | Special Interest | Educational, Historical |
| Mali Independence Day | Federal | Civic, Festivities, Historical |
| National Dogs in Politics Day | Animal | Dog, Historical, Weird National |
| Heritage Day | Fun | Family, Historical |
| Dominion Status Day | Federal | Educational, Historical |
| Johnny Appleseed Day | Cultural | Historical, Pop Culture |
| Ancestor Appreciation Day | Relationship | Appreciation, Historical |
| Day of the French Community | Cultural | Civic, Historical |
| Native American Day | Cultural | American, Historical |
| St. Wenceslas Day — Statehood Day | Cultural | Catholic, Civic, Historical |
| CONFUCIUS DAY | Special Interest | Educational, Historical |
| Botswana Day | Federal | Awareness, Historical, Military |
| Rumi Day | Cultural | American, Appreciation, Historical |
| Emotional Wellness Month | Health | Historical, Lifestyle |
| Global Diversity Awareness Month | Cause | Children, Civic, Historical |
| Italian-American Heritage and Culture Month | Cultural | American, Appreciation, Historical |
| LGBTQ+ History Month | Cultural | Awareness, Historical, LGBTQ |
| Polish American Heritage Month | Cultural | Historical |
| Chinese National Day | Cultural | Civic, Festivities, Historical |
| Cyprus Independence Day | Cultural | Federal, Historical |
| Investiture Ceremony of the Captains Regent | Cause | Activities, Cultural, Historical |
| Model T Day | Special Interest | Historical, Technology |
| National Day of China | Cultural | Cultural Holidays, Historical |
| ROK Alliance Day | Federal | Civic, Historical, Military |
| Labour Day | Federal | Civic, Historical, Work |
| World Architecture Day | Special Interest | Career, Historical, Work |
| Boqueron Battle Victory Day | Federal | Civic, Historical |
| Francisco Morazán's Day | Federal | Civic, Historical |
| Honduras: Francisco Morazan's Birthday | Federal | Historical, Special Interest |
| Iraq Independence Day | Federal | Civic, Historical |
| National Unity Day | Federal | Awareness, German, Historical |
| National Wide Awakes Day | Federal | American, Awareness, Historical |
| Lesotho Independence Day | Federal | Civic, Historical |
| Semana Morazánica in Honduras | Cultural | Cultural Holidays, Historical |
| Portugal Republic Day | Federal | Civic, Historical, International |
| Egypt: Armed Forces Day | Federal | Civic, Historical, Military |
| Honduras: Discovery of America Day | Federal | Civic, Historical |
| NATIONAL GERMAN-AMERICAN DAY | Federal | American, German, Historical |
| October Liberatory War | Special Interest | Civic, Historical |
| Turkmenistan Earthquake Memorial Day | Cause | Civic, Historical |
| Alvin C. York Day | Appreciation | American, Historical, Military |
| Battle of Angamos | Federal | Civic, Historical |
| Honduras: Discovery of America Day | Federal | Civic, Historical |
| Columbus Day | Federal | Historical |
| Indigenous Peoples' Day | Cultural | American, Awareness, Historical |
| Leif Erikson Day | Federal | Historical |
| National Native American Day | Appreciation | American, Historical |
| Saint Barthélemy: Abolition Day | Cause | Appreciation, Historical |
| Uganda Independence Day | Federal | Civic, Festivities, Historical |
| World Post Day | Federal | Historical |
| Cuba Independence Day | Cultural | Civic, Historical |
| Curaçao Day | Appreciation | Civic, Historical |
| Fiji Day | Cultural | Cultural Holidays, Historical |
| Local Government Day | Federal | Civic, Historical |
| Maroons Day | Cultural | Civic, Historical |
| Maroons Day | Cultural | Cultural Holidays, Federal, Historical |
| Taiwan: National Day / Double Ten day | Federal | Civic, Cultural, Historical |
| The Beginning of the Ten Years’ War | Federal | Civic, Historical |
| World Animal Road Accident Awareness Day | Animal | Civic, Cultural, Historical |
| General Pulaski Memorial Day | Federal | Historical, Military |
| International Top Spinning Day | Arts & Entertainment | Activities, Fun, Historical |
| National Fossil Day | Special Interest | Environment, Historical |
| Equatorial Guinea Independence Day | Federal | Civic, Historical |
| Indigenous Resistance Day | Cultural | Appreciation, Cultural Holidays, Historical |
| Navy Birthday | Federal | Historical, Military |
| Liberation Day in Yemen | Federal | Civic, Educational, Historical |
| Mera Chaoren Houba | Cultural | Cultural, Historical, Special Interest |
| National Heroes' Day of Jamaica | Federal | Appreciation, Historical |
| Sukkot | Religious | Historical, Jewish |
| Black Poetry Day | Arts & Entertainment | American, Cultural, Historical |
| Day of Dignity (Bolivia) | Federal | Civic, Historical |
| National Necktie Day | Special Interest | Cultural, Fashion, Historical |
| National Kentucky Day | Federal | Appreciation, Civic, Historical |
| Hawke's Bay Anniversary Day | Federal | Cultural, Fun, Historical |
| Kenya: Mashujaa Day | Appreciation | Appreciation, Historical |
| Philippine-British Friendship day | Cultural | Friendship, Historical |
| Revolution Day (Guatemala) | Federal | Civic, Historical |
| Armed Forces Day in Honduras | Federal | Appreciation, Historical, Military |
| National Archives Day | Cultural | Appreciation, Historical |
| President Ndadaye's Day | Federal | Appreciation, Historical |
| Trafalgar Day | Special Interest | Federal, Historical |
| Libya Liberation Day | Federal | Awareness, Historical |
| United Nations Day | Federal | Historical |
| Accession Day | Federal | Civic, Cultural, Historical |
| Austrian National Day | Federal | Civic, Federal, Historical |
| National Tennessee Day | Federal | American, Civic, Historical |
| Nevada Day | Cultural | American, Historical |
| Saint Vincent and the Grenadines Independence Day | Federal | Civic, Historical |
| Turkmenistan Independence Day | Federal | Civic, Festivities, Historical |
| World Day for Audiovisual Heritage | Cultural | Awareness, Historical, Technology |
| Czech Founding Day | Federal | Civic, Festivities, Historical |
| Ohi Day | Federal | Civic, Federal, Historical |
| Turkey Republic Day | Federal | Civic, Historical |
| Marlborough Anniversary Day | Special Interest | Appreciation, Federal, Historical |
| Girl Scout Founder’s Day | Special Interest | American, Fun, Historical |
| Reformation Day | Religious | Christian, Historical |
| Aviation History Month | Special Interest | Educational, Historical, Technology |
| Family Stories Month | Relationship | Family, Historical |
| Anniversary of the Revolution | Cause | Awareness, Historical |
| Antigua Independence Day | Federal | Cultural Holidays, Historical |
| Haryana Day | Federal | Conservation, Cultural, Historical |
| Kannada Rajyothsava | Cultural | Appreciation, Cultural Holidays, Historical, Indian Holidays |
| Prime Meridian Day | Special Interest | Educational, Environment, Historical |
| World Communication Week | Relationship | Historical, Lifestyle, Technology |
| All Souls Day (Brazil) | Religious | Catholic, Federal, Historical |
| Dominican Independence Day | Federal | Appreciation, Civic, Historical |
| Independence of Cuenca | Federal | Civic, Historical |
| Separation Day | Special Interest | Cultural Holidays, Historical |
| Flag Day in Panama | Cultural | Festivities, Historical |
| Russia's Day of Unity | Federal | Cultural, Festivities, Historical |
| Bonfire Night | Cultural | Festivities, Historical |
| Colón Day | Federal | Civic, Festivities, Historical |
| Gunpowder Day | Special Interest | Historical |
| Guy Fawke's Night | Special Interest | Awareness, Cultural, Historical |
| Benjamin Banneker Week | Special Interest | Appreciation, Historical, Technology |
| Constitution Day (Dominican Republic) | Federal | Civic, Festivities, Historical |
| Cambodia Independence Day | Federal | Civic, Cultural, Historical |
| Carl Sagan Day | Special Interest | Educational, Historical |
| National Louisiana Day | Appreciation | American, Cultural, Historical |
| World Freedom Day | Special Interest | Appreciation, Historical, International |
| Day of the “Primer Grito de Independencia” | Federal | Civic, Historical |
| Marine Corps Birthday | Federal | Historical, Military |
| Armistice Day (Martinique) | Federal | Civic, Historical, Military |
| Armistice Day (Saint Barthelemy) | Cultural | Civic, Historical, Military |
| Death/Duty Day | Special Interest | Awareness, Historical |
| French Armistice Day | Cultural | French, Historical |
| French Guiana Armistice Day | Federal | Civic, Historical, Military |
| National Indiana Day | Federal | Appreciation, Civic, Historical |
| Remembrance Day | Federal | Historical, Military |
| Remembrance Day Australia | Federal | Awareness, Historical, Military |
| Veterans Day | Federal | Historical, Military |
| Day of Mourning | Special Interest | Appreciation, Historical |
| Remembrance Sunday | Appreciation | Historical, Military |
| Republic Proclamation Day | Cultural | Civic, Historical |
| Canterbury Anniversary Day | Federal | Civic, Federal, Historical |
| Christchurch Show Day | Cultural | Civic, Historical |
| International Students Day | Special Interest | Appreciation, Educational, Historical |
| Battle of Vertières Day | Cultural | Civic, Historical, Military |
| Latvia Independence Day | Federal | Civic, Cultural, Historical |
| Discovery of Puerto Rico Day | Federal | Civic, Festivities, Historical |
| Garifuna Settlement Day | Cultural | Appreciation, Historical |
| Monaco National Day | Federal | Civic, Educational, Historical |
| Black Consciousness Day | Special Interest | Awareness, Historical |
| National Sovereignty Day | Federal | Appreciation, Festivities, Historical |
| Revolution Day (Mexico) | Federal | Civic, Historical |
| Lebanon Independence Day | Federal | Civic, Historical |
| National Day of Mourning | Cause | Historical |
| Unthanksgiving Day | Special Interest | Appreciation, Cultural, Historical |
| D.B. Cooper Day | Special Interest | American, Historical |
| Maize Day | Food & Beverage | Cultural, Healthy Food, Historical |
| Native American Heritage Day | Cultural | American, Historical |
| National Day of Bosnia & Herzigovina | Federal | Civic, Educational, Historical |
| Suriname Independence Day | Federal | Civic, Festivities, Historical |
| Chatham Islands Anniversary Day | Federal | Appreciation, Civic, Historical |
| Lancashire Day | | Civic, Cultural, Historical |
| National Sovereignty Day Argentina | Cultural | Historical |
| Albania Independence Day | Federal | Educational, Festivities, Historical |
| Mauritania Independence Day | Federal | Appreciation, Civic, Historical |
| Barbados Independence Day | Federal | Civic, Cultural Holidays, Historical |
| Bonifacio Day | Cultural | Cultural, Historical |
| National Mississippi Day | Cultural | American, Civic, Historical |
| St. Andrew's Day | Cultural | Christian, Festivities, Historical |
| The Nos Galan Road Races | Health | Activities, Historical, Sports |
| Central African Republic Republic Day | Cultural | Awareness, Educational, Historical |
| Commemoration Day | Federal | Appreciation, Historical, Islamic |
| Freedom and Democracy Day in Chad | Federal | Awareness, Civic, Historical, International |
| Kazakhstan’s First President's Day | Federal | Civic, Historical |
| Rockefeller Center Christmas Tree Lighting | Cultural | American, Festivities, Historical |
| Romania Independence Day | Federal | Cultural Holidays, Historical |
| Romania National Day | Federal | Civic, Historical |
| Rosa Parks Day | Special Interest | Appreciation, Civic, Historical |
| Asom Divas | Federal | Cultural, Historical, Indian Holidays |
| Business of Popping Corn Day | Food & Beverage | Historical, Technology |
| International Day for the Abolition of Slavery | Cause | Awareness, Federal, Historical |
| Lao National Day | Federal | Cultural, Historical |
| Feast of St. Francis Xavier | Religious | Christian, Cultural, Historical |
| Chester Greenwood (Earmuff) Day | Cultural | Fashion, Historical, Lifestyle |
| Tupou I Day (in lieu) | Cultural | Appreciation, Federal, Historical |
| Discovery Day (Haiti) | Cultural | Appreciation, Historical |
| National AFL-CIO Day | Special Interest | Awareness, Historical, Work |
| Día de la Constitución | Federal | Historical, Spanish |
| Foundation of Quito Day | Federal | Cultural, Festivities, Historical |
| Independence Day | Federal | Cultural, Federal, Historical |
| National Influenza Vaccination Week | Health | Awareness, Diseases, Historical |
| Feast of St. Ambrose | Religious | Appreciation, Christian, Historical |
| Hanukkah | Religious | Family, Historical, Jewish |
| Memorial Day in East Timor | Federal | Awareness, Civic, Historical |
| National Illinois Day | Federal | American, Civic, Historical |
| National Pearl Harbor Day of Remembrance | Federal | Historical, Military |
| Unduvap Full Moon Poya | Cultural | Buddhist, Historical |
| Albanian National Youth Day | Federal | Appreciation, Civic, Historical |
| Bodhi Day | Religious | Buddhist, Cultural, Historical |
| Uzbekistan Constitution Day | Federal | Civic, Historical |
| Virgin of Caacupé Day | Religious | Catholic, Christian, Historical |
| Tanzania Independence Day | Federal | Civic, Historical |
| Weary Willie Day | Arts & Entertainment | Funny, Historical, Hobby |
| Iraq Victory Day | Federal | Civic, Historical |
| Nobel Prize Day | Special Interest | Historical |
| Anniversary of the Statute of Westminster | Special Interest | Canadian, Federal, Historical |
| Jamhuri Day | Federal | Historical |
| National Poinsettia Day | Fun | Christian, Festivities, Historical |
| Pa Togan Nengminza Sangma | Cultural | Historical, Indian Holidays |
| Thailand Constitution Day | Federal | Civic, Festivities, Historical |
| Malta Republic Day | Federal | Historical |
| U.S. National Guard Birthday | Federal | Historical, Military |
| Halcyon Days | Fun | Historical, Obscure |
| Martyred Intellectuals Day | Cause | Federal, Historical |
| National Alabama Day | Federal | American, Historical |
| Bill of Rights Day | Federal | American, Historical |
| Bahrain National Day | Federal | Festivities, Historical, Islamic |
| Bangladesh Victory Day | Federal | Cultural, Historical |
| Kazakhstan Independence Day | Federal | Cultural, Historical |
| National Wreaths Across America Day | Cause | Historical, Military |
| Bhutan National Day | Cultural | Cultural, Historical |
| Wright Brother's Day | Appreciation | American, Educational, Historical |
| Saturnalia | Special Interest | Cultural, Historical, Pagan |
| Qatar National Day | Cultural | Cultural, Historical |
| Republic Day of Niger | Federal | Awareness, Civic, Historical |
| Goa Liberation Day | Cultural | Cultural, Historical, International |
| Mudd Day | Special Interest | Appreciation, Historical |
| Anne and Samantha Day | Appreciation | Historical |
| December Solstice | Special Interest | Festivities, Historical |
| Dongzhi | Special Interest | Activities, Cultural, Historical |
| National Maine Day | Cultural | Cultural, Historical |
| Yule | Cultural | Festivities, Historical, Pagan |
| Forefathers’ Day | Federal | American, Federal, Historical |
| Birthday of Emperor Akihito | Federal | Historical |
| National Roots Day | Relationship | American, Family, Historical |
| Quaid-e-Azam Day | Federal | Historical |
| Slovenia Independence and Unity Day | Federal | Civic, Historical |
| St. Stephen's Day (Ireland) | Federal | Christian, Historical, Irish |
| Pledge of Allegiance Day | Federal | American, Historical |
| Rizal Day | Federal | Federal, Historical |
| New Year's Eve | Cultural | Fun, Historical |
| Restoration Day in Geneva | Federal | Cultural, Educational, Historical |