| March 2021 | ||
|---|---|---|
| Date | Holiday | Where |
| March-1, Monday | Casimir Pulaski Day | Indiana (Designated Days) |
| March-1, Monday | Casimir Pulaski Holiday | Illinois (Designated Days) |
| March-2, Tuesday | Arkansas Teachers' Day | Arkansas (Memorial Days) |
| March-2, Tuesday | Texas Independence Day | Texas (Public Holidays) |
| March-2, Tuesday | Town Meeting Day | Vermont (Public Holidays) |
| March-4, Thursday | Idaho day | Idaho (Designated Days) |
| March-5, Friday | Arkansas Agriculture Recognition Day | Arkansas (Memorial Days) |
| March-7, Sunday | Arbor Day | California (Designated Days) |
| March-12, Friday | Girl Scouts of the United States of America day | Arizona (Observed Days) |
| March-15, Monday | Arbor Day | Arkansas (Memorial Days) |
| March-20, Saturday | Save the Florida Panther Day | Florida (Designated Days) |
| March-20, Saturday | The day of the astronomical Northward equinox | California (Designated Days) |
| March-21, Sunday | Baha'i New Year's Day | Hawaii (Designated Days) |
| March-21, Sunday | Prison Chaplains Appreciation Day | Georgia (Designated Days) |
| March-25, Thursday | Tuskegee airmen commemoration day | Arizona (Observed Days) |
| March-26, Friday | Prince Kuhio Day | Hawaii (Public Holidays) |
| March-29, Monday | Iowa State Flag Day | Iowa (Designated Days) |
| March-29, Monday | Seward's Day | Alaska (Public Holidays) |
| March-29, Monday | Vietnam veterans' day | Arizona (Observed Days) |
| March-29, Monday | Vietnam War Veterans Day | Illinois (Designated Days) |
| March-30, Tuesday | Vietnam Veterans Day | Delaware (Special Days) |
| March-30, Tuesday | Welcome Home Vietnam Veterans Day | California (Designated Days) |
| March-31, Wednesday | Cesar Chavez Day | California, Colorado (Designated Days) |
| March-31, Wednesday | Cesar Chavez Day | California (Public Holidays) |
| March-31, Wednesday | Dr. Cesar Estrada Chavez day | Arizona (Observed Days) |