| Jan 1 | New Year's Day (All) |
| Jan 1 | New Year's Day |
| Jan 1 | 'New Year's Eve' observed (LA, MI, WI) |
| Jan 7 | International Programmers' Day |
| Jan 7 | Estelle Reel Day (Wyoming) |
| Jan 8 | Battle of New Orleans (Louisiana) |
| Jan 13 | Stephen Foster Memorial Day |
| Jan 15 | Martin Luther King Jr. Day |
| Jan 15 | Martin Luther King Jr. Day (All) |
| Jan 15 | Robert E. Lee's Birthday (Alabama, Mississippi) |
| Jan 15 | Idaho Human Rights Day (Idaho) |
| Jan 15 | Civil Rights Day (Arizona, New Hampshire) |
| Jan 19 | Robert E. Lee's Birthday (Florida) |
| Jan 19 | State Holiday (Georgia) |
| Jan 19 | Confederate Heroes' Day (Texas) |
| Jan 21 | World Religion Day |
| Jan 26 | International Customs Day |
| Jan 28 | World Leprosy Day |
| Feb 1 | National Freedom Day |
| Feb 1 | First Day of Black History Month |
| Feb 2 | World Wetlands Day |
| Feb 2 | Groundhog Day |
| Feb 2 | Lunar New Year (Colorado) |
| Feb 4 | World Cancer Day |
| Feb 4 | Rosa Parks Day (California, Missouri) |
| Feb 4 | Rosa Parks Day (New York) |
| Feb 6 | Ronald Reagan Day (California) |
| Feb 7 | National Girls and Women in Sports Day |
| Feb 10 | Lunar New Year (California) |
| Feb 10 | Lunar New Year |
| Feb 11 | World Day of the Sick |
| Feb 12 | Lincoln's Birthday (CT, IL, MO, NY) |
| Feb 12 | Lincoln's Birthday (Florida) |
| Feb 12 | Georgia Day (Georgia) |
| Feb 13 | Shrove Tuesday/Mardi Gras (AL*, FL*, LA, MS*) |
| Feb 13 | Shrove Tuesday/Mardi Gras |
| Feb 14 | Valentine's Day |
| Feb 14 | Statehood Day (Arizona) |
| Feb 15 | Susan B. Anthony's Birthday (Florida, Wisconsin) |
| Feb 15 | Susan B. Anthony Day (Colorado, New York) |
| Feb 16 | Elizabeth Peratrovich Day (Alaska) |
| Feb 19 | Presidents' Day |
| Feb 19 | Presidents' Day (Most regions) |
| Feb 19 | Presidents' Day (Many regions) |
| Feb 19 | Daisy Gatson Bates Day (Arkansas) |
| Feb 25 | African-American Scientist and Inventor Day (Virginia) |
| Feb 25 | George Rogers Clark Day (Indiana) |
| Feb 28 | Linus Pauling Day (Oregon) |
| Feb 29 | Leap Day |
| Mar 1 | Self-Injury Awareness Day |
| Mar 1 | First Day of Women's History Month |
| Mar 1 | First Day of Irish American Heritage Month |
| Mar 2 | Texas Independence Day (Texas) |
| Mar 4 | Casimir Pulaski Day (Illinois, Indiana) |
| Mar 4 | Casimir Pulaski Day (Wisconsin) |
| Mar 5 | Town Meeting Day (Vermont) |
| Mar 14 | World Kidney Day |
| Mar 15 | Long Covid Awareness Day |
| Mar 17 | St. Patrick's Day |
| Mar 17 | Evacuation Day (Massachusetts) |
| Mar 18 | 'Evacuation Day' observed (Massachusetts) |
| Mar 19 | March Equinox |
| Mar 23 | Earth Hour |
| Mar 25 | Maryland Day (Maryland) |
| Mar 25 | Seward's Day (Alaska) |
| Mar 26 | Prince Jonah Kuhio Kalanianaole Day (Hawaii) |
| Mar 29 | Good Friday (Many regions) |
| Mar 29 | State Holiday (Georgia) |
| Mar 29 | National Vietnam War Veterans Day |
| Mar 30 | Wyoming Veterans Welcome Home Day (Wyoming) |
| Mar 30 | Doctors' Day |
| Mar 30 | Vietnam Veterans Day (Delaware) |
| Mar 30 | Vietnam Veteran Recognition Day (West Virginia) |
| Mar 31 | International Transgender Day of Visibility |
| Mar 31 | Easter Sunday |
| Mar 31 | César Chávez Day (Many regions) |
| Mar 31 | César Chávez Day (California) |
| Apr 1 | April Fool's Day |
| Apr 1 | Easter Monday |
| Apr 1 | 'César Chávez Day' day off (California) |
| Apr 2 | Pascua Florida Day (Florida) |
| Apr 13 | Thomas Jefferson's Birthday |
| Apr 15 | World Art Day |
| Apr 15 | Tax Day |
| Apr 15 | Father Damien Day (Hawaii) |
| Apr 15 | Patriots' Day (Maine, Massachusetts) |
| Apr 16 | Emancipation Day (District of Columbia) |
| Apr 18 | International Day for Monuments and Sites |
| Apr 19 | Arbor Day (Colorado) |
| Apr 21 | San Jacinto Day (Texas) |
| Apr 22 | Oklahoma Day (Oklahoma) |
| Apr 22 | Confederate Memorial Day (Alabama) |
| Apr 25 | Take our Daughters and Sons to Work Day |
| Apr 26 | Arbor Day (Nebraska) |
| Apr 26 | Arbor Day (Delaware) |
| Apr 26 | Confederate Memorial Day (Florida) |
| Apr 26 | State Holiday (Georgia) |
| Apr 29 | Arbor Day (Wyoming) |
| Apr 29 | Confederate Memorial Day (Mississippi) |
| May 1 | Law Day |
| May 1 | Loyalty Day |
| May 1 | Lei Day (Hawaii) |
| May 1 | First Day of Military Appreciation Month |
| May 1 | First Day of Asian Pacific American Heritage Month |
| May 1 | First Day of Jewish American Heritage Month |
| May 2 | National Day of Prayer |
| May 2 | West Virginia Day of Prayer (West Virginia) |
| May 4 | Kent State Shootings Remembrance (Ohio) |
| May 4 | Rhode Island Independence Day (Rhode Island) |
| May 5 | International Family Equality Day |
| May 5 | Cinco de Mayo |
| May 8 | World Ovarian Cancer Day |
| May 8 | World Red Cross and Red Crescent Day |
| May 8 | Truman Day (Missouri) |
| May 8 | Victory in Europe Day |
| May 10 | Confederate Memorial Day (North Carolina) |
| May 10 | Confederate Memorial Day (South Carolina) |
| May 10 | Native American Day (Wyoming) |
| May 10 | Military Spouse Appreciation Day (Delaware) |
| May 12 | International Nurses Day |
| May 12 | Mother's Day |
| May 12 | Mother's Day (Arizona) |
| May 14 | Primary Election Day (West Virginia) |
| May 15 | Peace Officers Memorial Day |
| May 17 | National Defense Transportation Day |
| May 18 | Public Lands Day (Colorado) |
| May 18 | Armed Forces Day |
| May 20 | World Autoimmune / Autoinflammatory Arthritis Day |
| May 22 | National Maritime Day |
| May 22 | Harvey Milk Day (California) |
| May 25 | African Liberation Day |
| May 27 | Memorial Day |
| May 27 | Decoration Day (AK, AL, AR, AZ, CA) |
| May 27 | Jefferson Davis' Birthday (Mississippi) |
| Jun 1 | First Day of Pride Month |
| Jun 1 | First Day of Caribbean-American Heritage Month |
| Jun 1 | Statehood Day (Kentucky, Tennessee) |
| Jun 2 | Native American Day (Arizona) |
| Jun 3 | Jefferson Davis' Birthday (Alabama) |
| Jun 3 | Jefferson Davis' Birthday (Florida) |
| Jun 6 | D-Day |
| Jun 11 | Kamehameha Day (Hawaii) |
| Jun 12 | Loving Day |
| Jun 14 | Flag Day |
| Jun 15 | Juneteenth (Wyoming) |
| Jun 15 | Juneteenth Day (Alaska, Arkansas) |
| Jun 15 | Juneteenth National Freedom Day (California) |
| Jun 15 | Juneteenth National Freedom Day (Montana, Oklahoma) |
| Jun 15 | Juneteenth National Freedom Day (Vermont) |
| Jun 16 | Father's Day (Arizona) |
| Jun 16 | Father's Day |
| Jun 17 | Bunker Hill Day (Massachusetts) |
| Jun 17 | 'Juneteenth Freedom Day' day off (Utah) |
| Jun 19 | Juneteenth |
| Jun 19 | Juneteenth National Freedom Day (Iowa) |
| Jun 19 | Juneteenth Day (Kansas) |
| Jun 19 | Juneteenth (Alabama) |
| Jun 19 | Juneteenth Day (AZ, FL, HI, WI) |
| Jun 19 | Juneteenth Day (Georgia) |
| Jun 19 | Juneteenth National Freedom Day (Idaho) |
| Jun 19 | Juneteenth (Colorado) |
| Jun 19 | Juneteenth Independence Day (Connecticut) |
| Jun 19 | Juneteenth National Freedom Day (Delaware) |
| Jun 19 | Juneteenth National Freedom Day (Illinois) |
| Jun 19 | Juneteenth (South Dakota) |
| Jun 19 | National Juneteenth Freedom Day (Kentucky) |
| Jun 19 | Juneteenth (Louisiana) |
| Jun 19 | Juneteenth (Maine) |
| Jun 19 | Juneteenth National Independence Day (District of Columbia, Maryland) |
| Jun 19 | Juneteenth Independence Day (Massachusetts) |
| Jun 19 | Juneteenth National Freedom Day (Michigan) |
| Jun 19 | Juneteenth (Minnesota) |
| Jun 19 | Juneteenth Freedom Day (Mississippi) |
| Jun 19 | Juneteenth (Missouri) |
| Jun 19 | Juneteenth (Nebraska) |
| Jun 19 | Juneteenth Day (Nevada) |
| Jun 19 | Juneteenth (New Hampshire) |
| Jun 19 | Juneteenth (NY, VA, WA) |
| Jun 19 | Juneteenth Freedom Day (New Mexico) |
| Jun 19 | Juneteenth (North Carolina) |
| Jun 19 | Juneteenth (North Dakota) |
| Jun 19 | Juneteenth (Ohio) |
| Jun 19 | Juneteenth (Oregon) |
| Jun 19 | Juneteenth National Freedom Day (Pennsylvania) |
| Jun 19 | Juneteenth National Freedom Day (Rhode Island) |
| Jun 19 | Juneteenth Celebration of Freedom Day (South Carolina) |
| Jun 19 | Juneteenth (Tennessee) |
| Jun 19 | Juneteenth Freedom Day (Utah) |
| Jun 19 | Juneteenth (West Virginia) |
| Jun 19 | Emancipation Day (Texas) |
| Jun 20 | West Virginia Day (West Virginia) |
| Jun 20 | American Eagle Day |
| Jun 20 | June Solstice |
| Jun 21 | Juneteenth Day (New Jersey) |
| Jun 28 | Carolina Day (South Carolina) |
| Jul 4 | Independence Day (Many regions) |
| Jul 4 | Independence Day |
| Jul 13 | Nathan Bedford Forrest Day (Tennessee) |
| Jul 24 | Pioneer Day (Utah) |
| Jul 27 | Korean War Veteran Recognition Day (West Virginia) |
| Jul 27 | National Korean War Veterans Armistice Day |
| Jul 28 | Parents' Day |
| Aug 1 | Colorado Day (Colorado) |
| Aug 4 | American Family Day (Arizona) |
| Aug 7 | Purple Heart Day (West Virginia, Wyoming) |
| Aug 7 | Purple Heart Day |
| Aug 12 | Victory Day (Rhode Island) |
| Aug 16 | Statehood Day (Hawaii) |
| Aug 16 | Bennington Battle Day (Vermont) |
| Aug 18 | National Navajo Code Talkers Day (Arizona) |
| Aug 19 | National Aviation Day |
| Aug 26 | Susan B. Anthony Day (Massachusetts) |
| Aug 27 | Lyndon Baines Johnson Day (Texas) |
| Aug 31 | International Overdose Awareness Day |
| Sep 2 | Labor Day (All) |
| Sep 2 | Labor Day |
| Sep 4 | World Sexual Health Day |
| Sep 7 | Still's Disease Awareness Day |
| Sep 7 | Carl Garner Federal Lands Cleanup Day |
| Sep 7 | Native American Day (Delaware) |
| Sep 8 | National Grandparents Day |
| Sep 9 | California Admission Day (California) |
| Sep 10 | World Suicide Prevention Day |
| Sep 11 | Patriot Day |
| Sep 11 | Patriot Day (Alaska) |
| Sep 12 | International Programmers' Day |
| Sep 13 | Friday the 13th |
| Sep 15 | First Day of National Hispanic Heritage Month |
| Sep 15 | Constitution Commemoration Day (Arizona) |
| Sep 17 | Constitution Day and Citizenship Day |
| Sep 20 | National POW/MIA Recognition Day |
| Sep 22 | Emancipation Day (Ohio) |
| Sep 22 | September Equinox |
| Sep 23 | International Celebrate Bisexuality Day |
| Sep 23 | American Indian Day (Tennessee) |
| Sep 27 | Native American Day (California, Nevada) |
| Sep 27 | American Indian Heritage Day (Montana, Texas) |
| Sep 27 | Michigan Indian Day (Michigan) |
| Sep 28 | World Rabies Day |
| Sep 28 | Public Lands Day (Wyoming) |
| Sep 28 | National Public Lands Day |
| Sep 29 | World Heart Day |
| Sep 29 | Gold Star Mother's Day |
| Oct 1 | World Vegetarian Day |
| Oct 3 | Rosh Hashana (Texas) |
| Oct 6 | World Cerebral Palsy Day |
| Oct 6 | German American Day |
| Oct 7 | Frances Xavier Cabrini Day (Colorado) |
| Oct 7 | Child Health Day |
| Oct 9 | Leif Erikson Day (Colorado) |
| Oct 10 | World Sight Day |
| Oct 11 | Casimir Pulaski Day (Michigan, Rhode Island) |
| Oct 11 | Anniversary of Death of General Pulaski (Massachusetts) |
| Oct 12 | Robert E. Lee's Birthday (Arkansas) |
| Oct 12 | Yom Kippur (Texas) |
| Oct 14 | Columbus Day (Many regions) |
| Oct 14 | Columbus Day |
| Oct 14 | Fraternal Day (Alabama) |
| Oct 14 | Yorktown Victory Day (Virginia) |
| Oct 14 | Discoverers’ Day (Hawaii) |
| Oct 14 | Native American Day (Oklahoma, South Dakota) |
| Oct 14 | Indigenous People's Day (Most regions) |
| Oct 14 | Indigenous People's Day (Michigan, Minnesota) |
| Oct 14 | American Indian Heritage Day (Alabama) |
| Oct 15 | White Cane Safety Day |
| Oct 18 | Alaska Day (Alaska) |
| Oct 25 | Nevada Day (Nevada) |
| Oct 29 | World Stroke Day |
| Oct 31 | Halloween |
| Nov 1 | World Vegan Day |
| Nov 1 | First Day of Native American Heritage Month |
| Nov 5 | Election Day |
| Nov 5 | Election Day (Many regions) |
| Nov 5 | Susan B. Anthony Day (West Virginia) |
| Nov 7 | Return Day (Delaware) |
| Nov 11 | Barack Obama Day (Alabama) |
| Nov 11 | Veterans Day |
| Nov 11 | Veterans Day (All except MA, RI, TX, WY) |
| Nov 11 | Veterans' Day/Armistice Day (MS, RI, TX) |
| Nov 12 | World Pneumonia Day |
| Nov 17 | World Prematurity Day |
| Nov 19 | International Men's Day |
| Nov 19 | George Rogers Clark Day (Ohio) |
| Nov 20 | Transgender Day of Remembrance |
| Nov 28 | Thanksgiving Day |
| Nov 28 | Thanksgiving Day (All) |
| Nov 29 | Nellie Tayloe Ross's Birthday (Wyoming) |
| Nov 29 | State Holiday (Georgia) |
| Nov 29 | Presidents' Day (New Mexico) |
| Nov 29 | Lincoln's Birthday/Lincoln's Day (Indiana) |
| Nov 29 | Day After Thanksgiving (Many regions) |
| Nov 29 | Family Day (Nevada) |
| Nov 29 | Acadian Day (Louisiana) |
| Nov 29 | Black Friday |
| Nov 29 | American Indian Heritage Day (Maryland) |
| Nov 29 | Native American Heritage Day |
| Nov 29 | Native American Heritage Day (Washington) |
| Dec 1 | Rosa Parks Day (Ohio) |
| Dec 1 | Rosa Parks Day (Alabama) |
| Dec 2 | Cyber Monday |
| Dec 7 | Pearl Harbor Remembrance Day (Alaska, Wyoming) |
| Dec 7 | Pearl Harbor Remembrance Day |
| Dec 7 | Delaware Day (Delaware) |
| Dec 10 | Wyoming Day (Wyoming) |
| Dec 13 | Friday the 13th |
| Dec 15 | Bill of Rights Day |
| Dec 17 | Pan American Aviation Day |
| Dec 17 | Wright Brothers Day |
| Dec 21 | December Solstice |
| Dec 24 | Christmas Eve (Many regions) |
| Dec 24 | Christmas Eve |
| Dec 25 | Christmas Day (All) |
| Dec 25 | Christmas Day |
| Dec 26 | Day After Christmas Day (KS, NC, SC, TX) |
| Dec 31 | New Year's Eve |
| Dec 31 | New Year's Eve (LA, MI, WI) |
