| May 2016 | |||
|---|---|---|---|
| Date | Day | Holiday | Where |
| May-1 | Sunday | American Loyalty Day | Pennsylvania (Observed Days) |
| May-1 | Sunday | Bird Day | Oklahoma (Observed Days) |
| May-1 | Sunday | Cold War Victory Day | Maine (Designated Days) |
| May-1 | Sunday | Family Day | Alaska (Designated Days) |
| May-1 | Sunday | Law Day | Florida, Missouri (Designated Days) |
| May-1 | Sunday | Law Day | Nevada, New Jersey (Observed Days) |
| May-1 | Sunday | Law Day U.S.A. | Maryland (Commemorative Days) |
| May-1 | Sunday | Lei Day | Hawaii (Designated Days ) |
| May-1 | Sunday | Loyal Heart Award Day | New Jersey (Observed Days) |
| May-1 | Sunday | Loyalty Day | Rhode Island, South Carolina (Special Days) |
| May-1 | Sunday | Silver Star Families of America Day | Missouri (Designated Days) |
| May-2 | Monday | Hemophilia Awareness Day | Arkansas (Memorial Days) |
| May-2 | Monday | Nurses Day | Rhode Island (Special Days) |
| May-2 | Monday | Water Professionals Appreciation Day | Georgia (Observed Days) |
| May-3 | Tuesday | Primary Election Day | Indiana (Public Holidays) |
| May-3 | Tuesday | Teacher Appreciation Day | Ohio (Designated Days) |
| May-4 | Wednesday | Artillery salute and display of flags on Independence Day | Rhode Island (Special Days) |
| May-4 | Wednesday | Firefighters Memorial Day | Michigan (Special Days) |
| May-4 | Wednesday | Holocaust Remembrance Day | New Jersey (Observed Days) |
| May-4 | Wednesday | Rhode Island Independence Day | Rhode Island (Special Days) |
| May-5 | Thursday | A Day of Prayer in New Jersey | New Jersey (Observed Days) |
| May-5 | Thursday | Commonwealth Day of Prayer and Celebration of Religious Freedom | Pennsylvania (Observed Days) |
| May-5 | Thursday | Day of Prayer | Virginia (Special Days) |
| May-5 | Thursday | Holocaust Remembrance day | Michigan (Special Days) |
| May-5 | Thursday | West Virginia Day of Prayer | West Virginia (Special Memorial Days) |
| May-6 | Friday | Arbor Day | Vermont (Commemorative Days) |
| May-6 | Friday | Arbor Day | North Dakota (Designated Days) |
| May-6 | Friday | Day of recognition for early childhood and day-care providers and professionals | Virginia (Special Days) |
| May-6 | Friday | Military Spouse Appreciation Day | Delaware (Special Days) |
| May-6 | Friday | Vietnam Veterans Survivors' and Remembrance Day | South Carolina (Special Days) |
| May-7 | Saturday | Vietnam Veterans' Remembrance Day | New Jersey (Observed Days) |
| May-7 | Saturday | Barrier Awareness Day | Kentucky (Designated Days) |
| May-7 | Saturday | Green Up Day | Vermont (Commemorative Days) |
| May-7 | Saturday | ROHHAD Awareness Day | Missouri (Designated Days) |
| May-8 | Sunday | Hernando de Soto Day | Mississippi (Observed Days) |
| May-8 | Sunday | Mother's Day | Kansas (Days of Commemoration) |
| May-8 | Sunday | Mother's Day | Kentucky, North Dakota (Designated Days) |
| May-8 | Sunday | Mother's Day | Arizona, Nevada, New Jersey, Tennessee (Observed Days) |
| May-8 | Sunday | Mother's Day | Iowa (Recognition Days) |
| May-8 | Sunday | Mother's Day | South Carolina, Virginia (Special Days) |
| May-8 | Sunday | Truman Day | Missouri (Designated Days) |
| May-9 | Monday | Truman Day | Missouri (Public Holidays) |
| May-9 | Monday | Willie Velasquez Day | Texas (Recognition Days) |
| May-10 | Tuesday | Confederate Memorial Day | South Carolina (Public Holidays) |
| May-10 | Tuesday | Confederate Memorial Day | North Carolina (Special Days) |
| May-10 | Tuesday | Saint Damien de Veuster Day | Hawaii (Designated Days ) |
| May-11 | Wednesday | Day of the Teacher | California (Designated Days) |
| May-11 | Wednesday | Public School Paraprofessional Day | Texas (Recognition Days) |
| May-11 | Wednesday | Vietnam Human Rights Day | Virginia (Special Days) |
| May-12 | Thursday | Fibromyalgia Awareness Day | South Carolina (Special Days) |
| May-12 | Thursday | Maryland Centenarians Day | Maryland (Commemorative Days) |
| May-12 | Thursday | Rhode Island Hero's Day | Rhode Island (Special Days) |
| May-13 | Friday | Family Respect Day | South Carolina (Special Days) |
| May-13 | Friday | Friendship Day | Rhode Island (Special Days) |
| May-13 | Friday | Michigan Manufacturing Day | Michigan (Special Days) |
| May-13 | Friday | Native American Day | Wyoming (Designated Days) |
| May-14 | Saturday | Negro Baseball League Day | Maryland (Commemorative Days) |
| May-15 | Sunday | Citizenship Recognition Day | Oklahoma (Observed Days) |
| May-15 | Sunday | Law Enforcement Memorial Day | Florida (Designated Days) |
| May-15 | Sunday | Peace Officer Memorial Day | Georgia (Observed Days) |
| May-15 | Sunday | Peace Officers Memorial Day | Missouri (Designated Days) |
| May-15 | Sunday | Peace Officers Memorial Day | New Jersey, Pennsylvania (Observed Days) |
| May-15 | Sunday | Police Officers Memorial Day | Michigan, Rhode Island (Special Days) |
| May-15 | Sunday | Police, firemen, first aid day | New Jersey (Observed Days) |
| May-15 | Sunday | Rhode Island Blue Star Parents Day | Rhode Island (Special Days) |
| May-15 | Sunday | Senior Citizen's Day | New Jersey (Observed Days) |
| May-15 | Sunday | Vietnam Veterans Day | Rhode Island (Special Days) |
| May-16 | Monday | Yellow Ribbon Day | Utah (Commemorative Days) |
| May-20 | Friday | Teacher's Day | Florida (Designated Days) |
| May-20 | Friday | Anniversary of Mecklenburg Declaration of Independence | North Carolina (Special Days) |
| May-20 | Friday | Bike to Work Day | Missouri (Designated Days) |
| May-20 | Friday | General Marquis de Lafayette Day | Massachusetts (Commemoration day) |
| May-21 | Saturday | Armed Forces Day | Oregon (Commenrations Days) |
| May-21 | Saturday | Armed Forces Day | Virginia (Special Days) |
| May-22 | Sunday | Harvey Milk Day | California (Designated Days) |
| May-22 | Sunday | Jim Thorpe Day | Oklahoma (Observed Days) |
| May-22 | Sunday | Maine Merchant Marine Day | Maine (Designated Days) |
| May-23 | Monday | Crohn's and Colitis Awareness Day | Ohio (Designated Days) |
| May-24 | Tuesday | Aviation Maintenance Technician Day | New Jersey (Observed Days) |
| May-25 | Wednesday | Children's Memorial Day | New Jersey (Observed Days) |
| May-25 | Wednesday | Missing Persons Day | Maine (Designated Days) |
| May-27 | Friday | Designation of Rachel Carson Day | Pennsylvania (Observed Days) |
| May-27 | Friday | Hubert H. Humphrey, Jr. Day | Pennsylvania (Observed Days) |
| May-27 | Friday | New Jersey Shore Celebration Day | New Jersey (Observed Days) |
| May-28 | Saturday | Bluegrass Day | Tennessee (Observed Days) |
| May-29 | Sunday | Birthday of President John F. Kennedy | Massachusetts (Commemoration day) |
| May-29 | Sunday | John Fitzgerald Kennedy Day | Michigan (Special Days) |
| May-30 | Monday | Memorial Day | Federal, New York Stock Exchange, US Banks |
| May-30 | Monday | Memorial Day | Rhode Island (General Holidays) |
| May-30 | Monday | Memorial Day | New York Stock Exchange (NYSE Holidays) |
| May-30 | Monday | Memorial Day | Alabama, Alaska, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, Florida, Georgia, Hawaii, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin, Wyoming (Public Holidays) |
| May-30 | Monday | Memorial Day | United States Postal Service (USPS Holidays) |
| May-30 | Monday | National Memorial Day | Mississippi, South Carolina (Public Holidays) |