| January | New Year’s Day | 2023-01-01 Sunday | Federal statutory holidays |
| New Year’s Day | 2023-01-02 Monday | Federal statutory holidays | |
| Epiphany | 2023-01-06 Friday | Christian festivals | |
| Orthodox Christmas Day | 2023-01-07 Saturday | Orthodox Festival | |
| Stephen Foster Memorial Day | 2023-01-13 Friday | Holidays or anniversaries | |
| Lee-Jackson Day | 2023-01-13 Friday | Local state festivals | |
| Orthodox New Year | 2023-01-14 Saturday | Orthodox festivals | |
| Robert E. Lee’s Birthday | 2023-01-16 Monday | Local state festivals | |
| Martin Luther King Jr. Day | 2023-01-16 Monday | Federal statutory holidays | |
| Idaho Human Rights Day | 2023-01-16 Monday | Local state festivals | |
| Civil Rights Day | 2023-01-16 Monday | Local state festivals | |
| Confederate Heroes’ Day | 2023-01-19 Thursday | Local state festivals | |
| Robert E. Lee’s Birthday | 2023-01-19 Thursday | Local state festivals | |
| Chinese New Year | 2023-01-22 Sunday | Local state festivals | |
| Kansas Day | 2023-01-29 Sunday | Local state festivals | |
| February | National Freedom Day | 2023-02-01 Wednesday | Holidays or anniversaries |
| Groundhog Day | 2023-02-02 Thursday | Holidays or anniversaries | |
| National Wear Red Day | 2023-02-03 Friday | Holidays or anniversaries | |
| Rosa Parks Day | 2023-02-04 Saturday | Local festivals | |
| Super Bowl | 2023-02-05 Sunday | sports event | |
| Tu Bishvat/Tu B’Shevat | 2023-02-06 Monday | Judaism festival | |
| Lincoln’s Birthday | 2023-02-12 Sunday | Local state festivals | |
| Lincoln’s Birthday | 2023-02-13 Monday | Local state festivals | |
| Valentine’s Day | 2023-02-14 Tuesday | Holidays or anniversaries | |
| Statehood Day | 2023-02-14 Tuesday | Local festivals | |
| Susan B. Anthony’s Birthday | 2023-02-15 Wednesday | Local festivals | |
| Elizabeth Peratrovich Day | 2023-02-16 Thursday | Local festivals | |
| Isra and Mi’raj | 2023-02-18 Saturday | Muslim festivals | |
| Presidents’ Day | 2023-02-20 Monday | Federal statutory holidays | |
| Daisy Gatson Bates Day | 2023-02-20 Monday | Local state festivals | |
| Shrove Tuesday/Mardi Gras | 2023-02-21 Tuesday | Local state festivals | |
| Carnival / Ash Wednesday | 2023-02-22 Wednesday | Christian festivals | |
| Linus Pauling Day | 2023-02-28 Tuesday | Local festival | |
| Mar. | St. David’s Day | 2023-03-01 Wednesday | Christian festivals |
| Read Across America Day | 2023-03-02 Thursday | Holidays or anniversaries | |
| Texas Independence Day | 2023-03-02 Thursday | Local state festival | |
| Employee Appreciation Day | 2023-03-03 Friday | Holidays or anniversaries | |
| Casimir Pulaski Day | 2023-03-06 Monday | Local festival | |
| Town Meeting Day | 2023-03-07 Tuesday | Local state festival | |
| Purim | 2023-03-07 Tuesday | Judaism festival | |
| St. Patrick’s Day | 2023-03-17 Friday | Christian festivals | |
| Evacuation Day | 2023-03-17 Friday | Local state festival | |
| First Day of Ramadan | 2023-03-23 Thursday | Muslim festivals | |
| Maryland Day | 2023-03-25 Saturday | Local festival | |
| Prince Jonah Kuhio Kalanianaole Day | 2023-03-26 Sunday | Local state festival | |
| Prince Jonah Kuhio Kalanianaole Day | 2023-03-27 Monday | Local state festival | |
| Seward’s Day | 2023-03-27 Monday | Local state festival | |
| National Vietnam War Veterans Day | 2023-03-29 Wednesday | Holidays or anniversaries | |
| César Chávez Day | 2023-03-31 Friday | Local state festival | |
| April | Pascua Florida Day | 2023-04-02 Sunday | Local festival |
| Palm Sunday | 2023-04-02 Sunday | Christian festivals | |
| Pascua Florida Day | 2023-04-03 Monday | Local festival | |
| National Tartan Day | 2023-04-06 Thursday | Holidays or anniversaries | |
| Maundy Thursday | 2023-04-06 Thursday | Christian festivals | |
| Passover (first day) | 2023-04-06 Thursday | Judaism festival | |
| Good Friday | 2023-04-07 Friday | Local state festival | |
| Holy Saturday | 2023-04-08 Saturday | Christian festivals | |
| Orthodox Easter Day | 2023-04-09 Sunday | Christian festivals | |
| Orthodox Easter Monday | 2023-04-10 Monday | Christian festivals | |
| National Library Workers’ Day | 2023-04-11 Tuesday | Holidays or anniversaries | |
| Thomas Jefferson’s Birthday | 2023-04-13 Thursday | Holidays or anniversaries | |
| Last Day of Passover | 2023-04-13 Thursday | Judaism festival | |
| Orthodox Good Friday | 2023-04-14 Friday | Orthodox Festival | |
| Orthodox Holy Saturday | 2023-04-15 Saturday | Orthodox Festival | |
| Father Damien Day | 2023-04-15 Saturday | Local festival | |
| Emancipation Day | 2023-04-16 Sunday | Local state festival | |
| Orthodox Easter | 2023-04-16 Sunday | Orthodox Festival | |
| Orthodox Easter Monday | 2023-04-17 Monday | Orthodox Festival | |
| Laylatul Qadr (Night of Power) | 2023-04-17 Monday | Muslim festivals | |
| Emancipation Day | 2023-04-17 Monday | Local state festival | |
| Patriot’s Day | 2023-04-17 Monday | Local state festival | |
| Boston Marathon | 2023-04-17 Monday | sports event | |
| Tax Day | 2023-04-17 Monday | Holidays or anniversaries | |
| Yom HaShoah | 2023-04-18 Tuesday | Jewish Memorial Festival | |
| San Jacinto Day | 2023-04-21 Friday | Local state festival | |
| Oklahoma Day | 2023-04-22 Saturday | Local festival | |
| Eid ul Fitr | 2023-04-22 Saturday | Muslim festivals | |
| Confederate Heroes’ Day | 2023-04-24 Monday | Local state festival | |
| Confederate Heroes’ Day | 2023-04-25 Tuesday | Local state festival | |
| Confederate Heroes’ Day | 2023-04-26 Wednesday | Local state festival | |
| Administrative Professionals Day | 2023-04-26 Wednesday | Holidays or anniversaries | |
| Yom Ha’atzmaut | 2023-04-26 Wednesday | Judaism festival | |
| Take our Daughters and Sons to Work Day | 2023-04-27 Thursday | Holidays or anniversaries | |
| Arbor Day | 2023-04-28 Friday | Local state festival | |
| May | Law Day | 2023-05-01 Monday | Holidays or anniversaries |
| Loyalty Day | 2023-05-01 Monday | Holidays or anniversaries | |
| Lei Day | 2023-05-01 Monday | Local festival | |
| National Day of Prayer | 2023-05-04 Thursday | Holidays or anniversaries | |
| Kent State Shootings Remembrance | 2023-05-04 Thursday | Local festival | |
| Rhode Island Independence Day | 2023-05-04 Thursday | Local festival | |
| Cinco de Mayo | 2023-05-05 Friday | Holidays or anniversaries | |
| Kentucky Oaks | 2023-05-05 Friday | sports event | |
| National Explosive Ordnance Disposal (EOD) Day | 2023-05-06 Saturday | Holidays or anniversaries | |
| Kentucky Derby | 2023-05-06 Saturday | sports event | |
| National Nurses Day | 2023-05-06 Saturday | Holidays or anniversaries | |
| Truman Day | 2023-05-08 Monday | Local state festival | |
| Lag BaOmer | 2023-05-09 Tuesday | Judaism festival | |
| Confederate Heroes’ Day | 2023-05-10 Wednesday | Local state festival | |
| Military Spouse Appreciation Day | 2023-05-12 Friday | Holidays or anniversaries | |
| Mother’s Day | 2023-05-14 Sunday | Holidays or anniversaries | |
| Peace Officers Memorial Day | 2023-05-15 Monday | Holidays or anniversaries | |
| Ascension Day | 2023-05-18 Thursday | Christian festivals | |
| National Defense Transportation Day | 2023-05-19 Friday | Holidays or anniversaries | |
| Armed Forces Day | 2023-05-20 Saturday | Holidays or anniversaries | |
| Preakness Stakes | 2023-05-20 Saturday | sports event | |
| National Maritime Day | 2023-05-22 Monday | Holidays or anniversaries | |
| Harvey Milk Day | 2023-05-22 Monday | Local festival | |
| Emergency Medical Services for Children Day | 2023-05-24 Wednesday | Holidays or anniversaries | |
| National Missing Children’s Day | 2023-05-25 Thursday | Holidays or anniversaries | |
| Shavuot | 2023-05-26 Friday | Judaism festival | |
| Pentecost | 2023-05-28 Sunday | Christian festivals | |
| Whit Monday | 2023-05-29 Monday | Christian festivals | |
| Memorial Day | 2023-05-29 Monday | Federal statutory holidays | |
| Jefferson Davis’ Birthday | 2023-05-29 Monday | Local festival | |
| June | Statehood Day | 2023-06-01 Thursday | Local festival |
| Jefferson Davis’ Birthday | 2023-06-03 Saturday | Local festival | |
| Trinity Sunday | 2023-06-04 Sunday | Christian festivals | |
| Jefferson Davis’ Birthday | 2023-06-05 Monday | Local state festival | |
| D-Day | 2023-06-06 Tuesday | Holidays or anniversaries | |
| Corpus Christi | 2023-06-08 Thursday | Christian festivals | |
| Belmont Stakes | 2023-06-10 Saturday | sports event | |
| Bunker Hill Day | 2023-06-11 Sunday | Local festival | |
| Kamehameha Day | 2023-06-11 Sunday | Local state festival | |
| Kamehameha Day | 2023-06-12 Monday | Local state festival | |
| Army Birthday | 2023-06-14 Wednesday | Holidays or anniversaries | |
| Flag Day | 2023-06-14 Wednesday | Holidays or anniversaries | |
| Father’s Day | 2023-06-18 Sunday | Holidays or anniversaries | |
| Holidays or anniversaries | 2023-06-19 Monday | Local festival | |
| West Virginia Day | 2023-06-20 Tuesday | Local state festival | |
| American Eagle Day | 2023-06-20 Tuesday | Holidays or anniversaries | |
| Eid ul Adha | 2023-06-29 Thursday | Muslim festivals | |
| July | Independence Day | 2023-07-04 Tuesday | Federal statutory holidays |
| French National Day | 2023-07-14 Friday | Holidays or anniversaries | |
| Muharram/Islamic New Year | 2023-07-19 Wednesday | Muslim festivals | |
| Parents’ Day | 2023-07-23 Sunday | Holidays or anniversaries | |
| Pioneer Day | 2023-07-24 Monday | Local state festival | |
| National Korean War Veterans Armistice Day | 2023-07-27 Thursday | Holidays or anniversaries | |
| Tisha B’Av | 2023-07-27 Thursday | Judaism festival | |
| August | Colorado Day | 2023-08-01 Tuesday | Local festival |
| Coast Guard Birthday | 2023-08-04 Friday | Holidays or anniversaries | |
| Purple Heart Day | 2023-08-07 Monday | Holidays or anniversaries | |
| Victory Day | 2023-08-14 Monday | Local state festival | |
| Assumption of Mary | 2023-08-15 Tuesday | Christian festivals | |
| Bennington Battle Day | 2023-08-16 Wednesday | Local state festival | |
| Statehood Day | 2023-08-18 Friday | Local state festival | |
| National Aviation Day | 2023-08-19 Saturday | Holidays or anniversaries | |
| Senior Citizens’ Day | 2023-08-21 Monday | Holidays or anniversaries | |
| Women’s Equality Day | 2023-08-26 Saturday | Holidays or anniversaries | |
| Lyndon Baines Johnson Day | 2023-08-27 Sunday | Local state festival | |
| September | Labor Day / May Day | 2023-09-04 Monday | Federal statutory holidays |
| Carl Garner Federal Lands Cleanup Day | 2023-09-09 Saturday | Holidays or anniversaries | |
| California Admission Day | 2023-09-09 Saturday | Local festival | |
| National Grandparents Day | 2023-09-10 Sunday | Holidays or anniversaries | |
| Patriot Day | 2023-09-11 Monday | Holidays or anniversaries | |
| National POW/MIA Recognition Day | 2023-09-15 Friday | Holidays or anniversaries | |
| Rosh Hashana | 2023-09-16 Saturday | Local state festival | |
| Constitution Day and Citizenship Day | 2023-09-17 Sunday | Holidays or anniversaries | |
| Constitution Day and Citizenship Day | 2023-09-18 Monday | Holidays or anniversaries | |
| Air Force Birthday | 2023-09-18 Monday | Holidays or anniversaries | |
| Emancipation Day | 2023-09-22 Friday | Local festival | |
| Native American Day | 2023-09-22 Friday | Local festival | |
| Gold Star Mother’s Day | 2023-09-24 Sunday | Holidays or anniversaries | |
| Yom Kippur | 2023-09-25 Monday | Local state festival | |
| Milad un Nabi (Mawlid) | 2023-09-27 Wednesday | Muslim festivals | |
| First Day of Sukkot | 2023-09-30 Saturday | Judaism festival | |
| October | Child Health Day | 2023-10-02 Monday | Holidays or anniversaries |
| Feast of St Francis of Assisi | 2023-10-04 Wednesday | Christian festivals | |
| Last Day of Sukkot | 2023-10-06 Friday | Judaism festival | |
| Shmini Atzeret | 2023-10-07 Saturday | Judaism festival | |
| Simchat Torah | 2023-10-08 Sunday | Judaism festival | |
| Leif Erikson Day | 2023-10-09 Monday | Holidays or anniversaries | |
| Columbus Day | 2023-10-09 Monday | Local festival | |
| Native American Day | 2023-10-09 Monday | Local festival | |
| Navy Birthday | 2023-10-13 Friday | Holidays or anniversaries | |
| White Cane Safety Day | 2023-10-15 Sunday | Holidays or anniversaries | |
| Boss’s Day | 2023-10-16 Monday | Holidays or anniversaries | |
| Alaska Day | 2023-10-18 Wednesday | Local state festival | |
| Sweetest Day | 2023-10-21 Saturday | Holidays or anniversaries | |
| Nevada Day | 2023-10-27 Friday | Local state festival | |
| Halloween | 2023-10-31 Tuesday | Holidays or anniversaries | |
| November | All Saints Day | 2023-11-01 Wednesday | Christian festivals |
| All Souls’ Day | 2023-11-02 Thursday | Christian festivals | |
| New York City Marathon | 2023-11-05 Sunday | sports event | |
| Marine Corps Birthday | 2023-11-10 Friday | Holidays or anniversaries | |
| Veterans Day | 2023-11-10 Friday | Federal statutory holidays | |
| Veterans Day | 2023-11-11 Saturday | Federal statutory holidays | |
| Thanksgiving Day | 2023-11-23 Thursday | Federal statutory holidays | |
| Day After Thanksgiving | 2023-11-24 Friday | Local state festival | |
| Black Friday | 2023-11-24 Friday | Holidays or anniversaries | |
| American Indian Heritage Day | 2023-11-24 Friday | Local state festival | |
| Robert E. Lee’s Birthday | 2023-11-24 Friday | Local state festival | |
| Presidents’ Day | 2023-11-24 Friday | Local state festival | |
| Lincoln’s Birthday | 2023-11-24 Friday | Local state festival | |
| Cyber Monday | 2023-11-27 Monday | Holidays or anniversaries | |
| December | Rosa Parks Day | 2023-12-01 Friday | Local festival |
| First Sunday of Advent | 2023-12-03 Sunday | Christian festivals | |
| St Nicholas Day | 2023-12-06 Wednesday | Holidays or anniversaries | |
| Pearl Harbor Remembrance Day | 2023-12-07 Thursday | Holidays or anniversaries | |
| Immaculate Conception | 2023-12-08 Friday | Christian festivals | |
| Chanukah/Hanukkah (first day) | 2023-12-08 Friday | Judaism festival | |
| Feast of Our Lady of Guadalupe | 2023-12-12 Tuesday | Christian festivals | |
| National Guard Birthday | 2023-12-13 Wednesday | Holidays or anniversaries | |
| Bill of Rights Day | 2023-12-15 Friday | Holidays or anniversaries | |
| Last day of Hanukkah | 2023-12-15 Friday | Judaism festival | |
| Pan American Aviation Day | 2023-12-17 Sunday | Holidays or anniversaries | |
| Wright Brothers Day | 2023-12-17 Sunday | Holidays or anniversaries | |
| Wright Brothers Day | 2023-12-17 Sunday | Holidays or anniversaries | |
| Christmas Eve | 2023-12-24 Sunday | Local state festival | |
| Christmas Day | 2023-12-25 Monday | Local state festival | |
| Kwanzaa (first day) | 2023-12-26 Tuesday | Holidays or anniversaries | |
| Day After Christmas Day | 2023-12-26 Tuesday | Local state festival | |
| New Year’s Eve | 2023-12-31 Sunday | Local state festival |
