| December 2018 | |||
|---|---|---|---|
| Date | Day | Holiday | Where |
| December-1 | Saturday | Arbor Day | South Carolina (Special Days) |
| December-1 | Saturday | My Nationality American Day | Louisiana (Special Days) |
| December-1 | Saturday | Rosa Parks Day | Ohio (Special Days) |
| December-3 | Monday | Organ Donor Awareness Day | Maine (Special Days) |
| December-7 | Friday | Delaware Day | Delaware (Special Days) |
| December-7 | Friday | Pearl Harbor Remembrance Day | Alaska, Kansas, Nevada, Virginia, Washington, Wyoming (Special Days) |
| December-8 | Saturday | Bodhi Day | Hawaii (Special Days) |
| December-10 | Monday | Wyoming Day | Wyoming (Special Days) |
| December-14 | Friday | Margaret Chase Smith Day | Maine (Special Days) |
| December-15 | Saturday | Bill of Rights Day | Georgia, Iowa, South Carolina, South Dakota, Utah, Virginia (Special Days) |
| December-19 | Wednesday | Senator Hattie W. Caraway Day | Arkansas (Special Days) |
| December-20 | Thursday | Sakada Day | Hawaii (Special Days) |
| December-21 | Friday | Chester Greenwood Day | Maine (Special Days) |
| December-21 | Friday | Homeless persons' memorial day | Ohio (Special Days) |
| December-24 | Monday | Additional Holiday | Virginia (Public Holidays) |
| December-24 | Monday | Christmas Eve | New York Stock Exchange (Half Day) |
| December-24 | Monday | Christmas Eve | Arizona, Arkansas, Florida, Kentucky, Michigan, North Carolina, North Dakota, South Carolina, Texas (Public Holidays) |
| December-24 | Monday | Washington's Birthday | Georgia, Indiana (Public Holidays) |
| December-25 | Tuesday | Christmas | Federal (Federal Holidays) |
| December-25 | Tuesday | Christmas | New York Stock Exchange (NYSE Holidays) |
| December-25 | Tuesday | Christmas | Alabama, Alaska, American Samoa, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, Florida, Georgia, Hawaii, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin, Wyoming (Public Holidays) |
| December-25 | Tuesday | Christmas | US Banks (US Bank Holidays 2018) |
| December-25 | Tuesday | Christmas | United States Postal Service (USPS Holidays) |
| December-26 | Wednesday | Boxing Day | American Samoa, North Carolina, Oklahoma, South Carolina (Public Holidays) |
| December-29 | Saturday | Wounded Knee Day | South Dakota (Special Days) |
| December-31 | Monday | Additional Holiday | Virginia (Public Holidays) |
| December-31 | Monday | New Year's Eve | Kentucky, Michigan (Public Holidays) |