| April 2024 | ||
|---|---|---|
| Date | Holiday | Where |
| April-1, Monday | Gift to Iowa’s Future Recognition Day | Iowa (Special Days) |
| April-6, Saturday | Tartan Day | Nevada (Observance Days) |
| April-8, Monday | Buddha Day | Hawaii (Designated Days) |
| April-9, Tuesday | Former Prisoner of War Recognition Day | Maine (Special Observance Days) |
| April-9, Tuesday | Former Prisoners of War Recognition Day | Georgia (Designated Days) |
| April-15, Monday | Patriot's Day | Maine (State Holidays) |
| April-15, Monday | Patriots’ Day | Massachusetts (State Holidays) |
| April-16, Tuesday | Healthcare Decisions Day” | Nevada (Observance Days) |
| April-17, Wednesday | Joe Foss Day | South Dakota (Special Observance Days) |
| April-17, Wednesday | Flag Day | American Samoa |
| April-19, Friday | Arbor Day | Colorado (Special Days) |
| April-20, Saturday | Dogwood Day | Virginia |
| April-21, Sunday | John Muir Day | California (Special Days) |
| April-21, Sunday | San Jacinto Day | Texas (State Holidays) |
| April-22, Monday | Confederate Memorial Day | Alabama (Public Holidays) |
| April-24, Wednesday | California Day of Remembrance of the Armenian Genocide | California (Special Days) |
| April-26, Friday | Arbor Day | Virginia |
| April-26, Friday | Arbor Day | Nevada (Observance Days) |
| April-26, Friday | Arbor Day | Iowa, Kansas (Special Days) |
| April-26, Friday | Arbor Day | South Dakota (Special Observance Days) |
| April-26, Friday | Arbor Day | Nebraska (State Holidays) |
| April-29, Monday | Confederate Memorial Day | Mississippi (State Holidays) |
| April-29, Monday | Muharram | Virgin Islands |