| Jan 1 | New Year's Day |
| Jan 6 | Epiphany |
| 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 19 | Robert E. Lee's Birthday (Florida) |
| Jan 19 | State Holiday (Georgia) |
| Feb 1 | National Freedom Day |
| Feb 1 | First Day of Black History Month |
| Feb 2 | Groundhog Day |
| Feb 2 | Lunar New Year (Colorado) |
| Feb 4 | Rosa Parks Day (California, Missouri) |
| 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 | Super Bowl |
| Feb 12 | Lincoln's Birthday (Florida) |
| Feb 12 | Georgia Day (Georgia) |
| Feb 13 | Shrove Tuesday/Mardi Gras |
| Feb 14 | Ash Wednesday |
| 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 19 | Presidents' Day |
| Feb 25 | African-American Scientist and Inventor Day (Virginia) |
| Feb 25 | George Rogers Clark Day (Indiana) |
| Feb 28 | Linus Pauling Day (Oregon) |
| Mar 1 | St. David's Day |
| Mar 1 | First Day of Women's History Month |
| Mar 1 | First Day of Irish American Heritage Month |
| Mar 4 | Casimir Pulaski Day (Illinois, Indiana) |
| Mar 4 | Casimir Pulaski Day (Wisconsin) |
| Mar 17 | St. Patrick's Day |
| Mar 19 | March Equinox |
| Mar 24 | Palm Sunday |
| Mar 25 | Maryland Day (Maryland) |
| Mar 28 | Maundy Thursday |
| Mar 29 | Good Friday (Many regions) |
| Mar 29 | National Vietnam War Veterans Day |
| Mar 30 | Holy Saturday |
| 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 | Easter Sunday |
| Apr 1 | Easter Monday |
| Apr 2 | Pascua Florida Day (Florida) |
| Apr 13 | Thomas Jefferson's Birthday |
| Apr 15 | Tax Day |
| Apr 15 | Father Damien Day (Hawaii) |
| Apr 15 | Boston Marathon |
| Apr 19 | Arbor Day (Colorado) |
| Apr 22 | Oklahoma Day (Oklahoma) |
| Apr 25 | Take our Daughters and Sons to Work Day |
| Apr 26 | Arbor Day (Delaware) |
| Apr 26 | Confederate Memorial Day (Florida) |
| Apr 26 | State Holiday (Georgia) |
| Apr 29 | Arbor Day (Wyoming) |
| 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 3 | Kentucky Oaks |
| May 4 | Kent State Shootings Remembrance (Ohio) |
| May 4 | Kentucky Derby |
| May 4 | Rhode Island Independence Day (Rhode Island) |
| May 5 | Cinco de Mayo |
| May 8 | Victory in Europe Day |
| May 9 | Ascension Day |
| May 10 | Confederate Memorial Day (North Carolina) |
| May 10 | Military Spouse Appreciation Day (Delaware) |
| May 12 | Mother's Day |
| May 15 | Peace Officers Memorial Day |
| May 17 | National Defense Transportation Day |
| May 18 | Public Lands Day (Colorado) |
| May 18 | Armed Forces Day |
| May 18 | Preakness Stakes |
| May 19 | Pentecost |
| May 20 | Whit Monday |
| May 22 | National Maritime Day |
| May 22 | Harvey Milk Day (California) |
| May 26 | Trinity Sunday |
| May 27 | Memorial Day |
| May 27 | Jefferson Davis' Birthday (Mississippi) |
| May 30 | Corpus Christi |
| Jun 1 | First Day of Pride Month |
| Jun 1 | First Day of Caribbean-American Heritage Month |
| Jun 1 | Statehood Day (Kentucky, Tennessee) |
| Jun 3 | Jefferson Davis' Birthday (Florida) |
| Jun 6 | D-Day |
| Jun 8 | Belmont Stakes |
| Jun 12 | Loving Day |
| Jun 14 | Flag Day |
| Jun 16 | Father's Day |
| Jun 19 | Juneteenth |
| Jun 19 | Juneteenth (North Carolina) |
| Jun 20 | American Eagle Day |
| Jun 20 | June Solstice |
| Jun 28 | Carolina Day (South Carolina) |
| Jul 4 | Independence Day |
| Jul 13 | Nathan Bedford Forrest Day (Tennessee) |
| 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 7 | Purple Heart Day (West Virginia, Wyoming) |
| Aug 7 | Purple Heart Day |
| Aug 15 | Assumption of Mary |
| Aug 19 | National Aviation Day |
| Aug 26 | Susan B. Anthony Day (Massachusetts) |
| Sep 2 | Labor Day |
| Sep 7 | Carl Garner Federal Lands Cleanup Day |
| Sep 8 | National Grandparents Day |
| Sep 11 | Patriot Day |
| Sep 15 | First Day of National Hispanic Heritage Month |
| Sep 17 | Constitution Day and Citizenship Day |
| Sep 20 | National POW/MIA Recognition Day |
| Sep 22 | Emancipation Day (Ohio) |
| Sep 22 | September Equinox |
| Sep 28 | Public Lands Day (Wyoming) |
| Sep 28 | National Public Lands Day |
| Sep 29 | Gold Star Mother's Day |
| Oct 4 | Feast of St Francis of Assisi |
| Oct 6 | German American Day |
| Oct 7 | Child Health Day |
| Oct 9 | Leif Erikson Day (Colorado) |
| 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 13 | Chicago Marathon |
| Oct 14 | Columbus Day |
| Oct 15 | White Cane Safety Day |
| Oct 31 | Halloween |
| Nov 1 | All Saints' Day |
| Nov 1 | First Day of Native American Heritage Month |
| Nov 2 | All Souls' Day |
| Nov 3 | New York City Marathon |
| Nov 5 | Election Day |
| Nov 5 | Susan B. Anthony Day (West Virginia) |
| Nov 11 | Barack Obama Day (Alabama) |
| Nov 11 | Veterans Day |
| Nov 19 | George Rogers Clark Day (Ohio) |
| Nov 28 | Thanksgiving Day |
| Nov 29 | Nellie Tayloe Ross's Birthday (Wyoming) |
| Nov 29 | Black Friday |
| Nov 29 | Native American Heritage Day |
| Dec 1 | First Sunday of Advent |
| Dec 1 | Rosa Parks Day (Ohio) |
| Dec 2 | Cyber Monday |
| Dec 7 | Pearl Harbor Remembrance Day |
| Dec 7 | Pearl Harbor Remembrance Day (Alaska, Wyoming) |
| Dec 7 | Delaware Day (Delaware) |
| Dec 9 | Feast of the Immaculate Conception |
| Dec 10 | Wyoming Day (Wyoming) |
| Dec 12 | Feast of Our Lady of Guadalupe |
| 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 |
| Dec 25 | Christmas Day |
| Dec 25 | Christmas Day (All) |
| Dec 31 | New Year's Eve |
