| April 2016 | |||
|---|---|---|---|
| Date | Day | Holiday | Where |
| April-1 | Friday | Arbor Day | Missouri (Designated Days) |
| April-1 | Friday | Dauphine Day | Rhode Island (Special Days) |
| April-2 | Saturday | Pascua Florida Day | Florida (Designated Days) |
| April-3 | Sunday | Parents' and Children's Day | Florida (Designated Days) |
| April-3 | Sunday | Crime Victim and Advocate Commemorative Day | Maryland (Commemorative Days) |
| April-4 | Monday | Gift to Iowa's Future Recognition Day | Iowa (Recognition Days) |
| April-5 | Tuesday | Equal Pay Day | Maine (Designated Days) |
| April-6 | Wednesday | California Poppy Day | California (Designated Days) |
| April-6 | Wednesday | Retired Teachers' Day | Rhode Island (Special Days) |
| April-6 | Wednesday | Tartan Day | Ohio (Designated Days) |
| April-6 | Wednesday | Tartan Day | Nevada (Observed Days) |
| April-6 | Wednesday | World War I day | Ohio (Designated Days) |
| April-8 | Friday | Buddha Day | Hawaii (Designated Days ) |
| April-8 | Friday | Day of recognition for bone marrow donor programs | Virginia (Special Days) |
| April-9 | Saturday | Bataan Day | New Mexico (Designated Days) |
| April-9 | Saturday | Former Prisoner of War Recognition Day | Maine (Designated Days) |
| April-9 | Saturday | Former Prisoners of War Recognition Day | Georgia (Observed Days) |
| April-9 | Saturday | Former Prisoners Of War Recognition Day | Texas (Recognition Days) |
| April-9 | Saturday | POW/MIA Recognition Day | North Carolina (Special Days) |
| April-9 | Saturday | Prisoner of war Recognition Day | Washington (Recognized Days) |
| April-9 | Saturday | Prisoners of War Remembrance Day | Missouri (Designated Days) |
| April-9 | Saturday | Prisoners of War Remembrance Day | Arkansas (Memorial Days) |
| April-9 | Saturday | Prisoners of war remembrance day | Arizona, Oklahoma (Observed Days) |
| April-11 | Monday | Lineman Appreciation Day | North Carolina (Special Days) |
| April-11 | Monday | Missouri Lineworker Appreciation Day | Missouri (Designated Days) |
| April-12 | Tuesday | Anniversary of signing of Halifax Resolves | North Carolina (Special Days) |
| April-12 | Tuesday | RI Patriot Guard Riders Day | Rhode Island (Special Days) |
| April-13 | Wednesday | John Hanson's Birthday | Maryland (Commemorative Days) |
| April-14 | Thursday | Honorary Artists of Oregon Day | Oregon (Commenrations Days) |
| April-14 | Thursday | Pan-American Day | Florida (Designated Days) |
| April-15 | Friday | Arbor Day | Colorado (Designated Days) |
| April-15 | Friday | Local Government Day | Pennsylvania (Observed Days) |
| April-16 | Saturday | Combat Veterans Day | Rhode Island (Special Days) |
| April-16 | Saturday | Dogwood Day | Virginia (Special Days) |
| April-16 | Saturday | Mother Joseph Day | Washington (Recognized Days) |
| April-16 | Saturday | National Healthcare Decisions Day | Maryland (Commemorative Days) |
| April-17 | Sunday | Joe Foss Day | South Dakota (Special Days) |
| April-17 | Sunday | New Jersey Day | New Jersey (Observed Days) |
| April-18 | Monday | Patriots Day | New Jersey (Observed Days) |
| April-18 | Monday | Patriots' Day | Maine, Massachusetts (Public Holidays) |
| April-19 | Tuesday | Patriots' Day | Florida (Designated Days) |
| April-19 | Tuesday | Oklahoma City Bombing Remembrance Day | Oklahoma (Observed Days) |
| April-19 | Tuesday | Patriots' Day | Missouri (Designated Days) |
| April-19 | Tuesday | Patriots' Day | Arkansas (Memorial Days) |
| April-19 | Tuesday | Patriots' Day | Tennessee (Observed Days) |
| April-20 | Wednesday | Bob Bartlett Day | Alaska (Designated Days) |
| April-21 | Thursday | John Muir Day | California (Designated Days) |
| April-21 | Thursday | San Jacinto Day | Texas (Public Holidays) |
| April-22 | Friday | Children's Memorial Day | Michigan (Special Days) |
| April-22 | Friday | Earth Day | Pennsylvania (Observed Days) |
| April-22 | Friday | Workers Memorial Day | Rhode Island (Special Days) |
| April-24 | Sunday | Armenian Genocide Remembrance Day | Michigan (Special Days) |
| April-24 | Sunday | California Day of Remembrance of the Armenian Genocide | California (Designated Days) |
| April-25 | Monday | Arbor Day | Wyoming (Designated Days) |
| April-25 | Monday | Confederate Memorial Day | Alabama, Mississippi (Public Holidays) |
| April-25 | Monday | State holiday | Georgia (Public Holidays) |
| April-26 | Tuesday | Arkansas Bird Day | Arkansas (Memorial Days) |
| April-26 | Tuesday | Bird Day | North Dakota (Designated Days) |
| April-28 | Thursday | Workers Memorial Day | Nebraska (Observed Days) |
| April-28 | Thursday | Denim Day | New Jersey (Observed Days) |
| April-28 | Thursday | Take our Daughters to Work Day | New Jersey (Observed Days) |
| April-28 | Thursday | Workers Memorial Day | North Dakota (Designated Days) |
| April-28 | Thursday | Workers Memorial Day | Tennessee (Observed Days) |
| April-29 | Friday | Arbor Day | Kansas (Days of Commemoration) |
| April-29 | Friday | Arbor Day | Arizona, Nevada, Pennsylvania (Observed Days) |
| April-29 | Friday | Arbor Day | Nebraska (Public Holidays) |
| April-29 | Friday | Arbor Day | Iowa (Recognition Days) |
| April-29 | Friday | Arbor Day | Delaware, Michigan, Montana, Rhode Island, South Dakota, Virginia (Special Days) |
| April-30 | Saturday | Children's Day | Idaho (Special Days) |