| May 2017 | |||
|---|---|---|---|
| Date | Day | Holiday | Where |
| May-1 | Monday | American Loyalty Day | Pennsylvania (Designated Days) |
| May-1 | Monday | Bird Day | Oklahoma (Observed Days) |
| May-1 | Monday | Cold War Victory Day | Maine (Designated Days) |
| May-1 | Monday | Family Day | Alaska (Designated Days) |
| May-1 | Monday | Hemophilia Awareness Day | Arkansas (Memorial Days) |
| May-1 | Monday | Law Day | Maryland (Commemorative Days) |
| May-1 | Monday | Law Day | Florida, Missouri (Designated Days) |
| May-1 | Monday | Law Day | Nevada, New Jersey (Observed Days) |
| May-1 | Monday | Lei Day | Hawaii (Designated Days) |
| May-1 | Monday | Loyalty Day | Rhode Island, South Carolina (Special Days) |
| May-1 | Monday | Nurses Day | Rhode Island (Special Days) |
| May-1 | Monday | Silver Star Families of America Day | Missouri (Designated Days) |
| May-1 | Monday | Water Professionals Appreciation Day | Georgia (Observed Days) |
| May-4 | Thursday | Artillery salute and display of flags on Independence Day | Rhode Island (Special Days) |
| May-4 | Thursday | Commonwealth Day of Prayer | Virginia (Special Days) |
| May-4 | Thursday | Firefighters Memorial Day | Michigan (Special Days) |
| May-4 | Thursday | Loyal Heart Award Day | New Jersey (Observed Days) |
| May-4 | Thursday | Peace Officers Memorial Day | Pennsylvania (Designated Days) |
| May-4 | Thursday | Rhode Island Independence Day | Rhode Island (Special Days) |
| May-4 | Thursday | West Virginia Day of Prayer | West Virginia (Special Memorial Days) |
| May-5 | Friday | Arbor Day | Vermont (Observed Days) |
| May-5 | Friday | Vietnam Veterans Day | South Carolina (Special Days) |
| May-6 | Saturday | Green Up Day | Vermont (Observed Days) |
| May-7 | Sunday | A Day of Prayer in New Jersey | New Jersey (Observed Days) |
| May-7 | Sunday | Barrier Awareness Day | Kentucky (Designated Days) |
| May-7 | Sunday | Holocaust Remembrance Day | New Jersey (Observed Days) |
| May-7 | Sunday | Rhode Island Blue Star Parents Day | Rhode Island (Special Days) |
| May-7 | Sunday | ROHHAD Awareness Day | Missouri (Designated Days) |
| May-8 | Monday | Hernando de Soto Day | Mississippi (Local Holidays) |
| May-8 | Monday | Mother's Day | Kentucky (Designated Days) |
| May-8 | Monday | Mother's Day | Nevada (Observed Days) |
| May-8 | Monday | Truman Day | Missouri (Designated Days) |
| May-8 | Monday | Truman Day | Missouri (Public Holidays) |
| May-9 | Tuesday | Teacher Appreciation Day | Ohio (Designated Days) |
| May-9 | Tuesday | Willie Velasquez Day | Texas (Recognition Days) |
| May-10 | Wednesday | Confederate Memorial Day | South Carolina (Public Holidays) |
| May-10 | Wednesday | Confederate Memorial Day | North Carolina (Special Days) |
| May-10 | Wednesday | Day of the Teacher | California (Designated Days) |
| May-10 | Wednesday | Public School Paraprofessional Day | Texas (Recognition Days) |
| May-10 | Wednesday | Saint Damien de Veuster Day | Hawaii (Designated Days) |
| May-11 | Thursday | Maryland Centenarians Day | Maryland (Commemorative Days) |
| May-11 | Thursday | Vietnam Human Rights Day | Virginia (Special Days) |
| May-12 | Friday | Day of recognition for direct care staffs and other long-termcare professionals | Virginia (Special Days) |
| May-12 | Friday | Fibromyalgia Awareness Day | South Carolina (Special Days) |
| May-12 | Friday | Friendship Day | Rhode Island (Special Days) |
| May-12 | Friday | Military Spouse Appreciation Day | Delaware (Special Days) |
| May-12 | Friday | Native American Day | Wyoming (Designated Days) |
| May-13 | Saturday | Negro Baseball League Day | Maryland (Commemorative Days) |
| May-14 | Sunday | Mother's Day | Kansas (Commemoration day) |
| May-14 | Sunday | Mother's Day | North Dakota, Tennessee (Designated Days) |
| May-14 | Sunday | Mother's Day | Arizona, New Jersey (Observed Days) |
| May-14 | Sunday | Mother's Day | Iowa (Recognition Days) |
| May-14 | Sunday | Mother's Day | Virginia (Special Days) |
| May-15 | Monday | Commonwealth Day of Prayer and Celebration of Religious Freedom | Pennsylvania (Designated Days) |
| May-15 | Monday | Law Enforcement Memorial Day | Florida (Designated Days) |
| May-15 | Monday | Peace Officers Memorial Day | Missouri (Designated Days) |
| May-15 | Monday | Peace Officers Memorial Day | Georgia, New Jersey (Observed Days) |
| May-15 | Monday | Peace Officers Memorial Day | Michigan, Rhode Island (Special Days) |
| May-15 | Monday | Vietnam Veterans Day | New Jersey (Observed Days) |
| May-15 | Monday | Vietnam Veterans Day | Rhode Island (Special Days) |
| May-15 | Monday | Yellow Ribbon Day | Utah (Commemorative Days) |
| May-19 | Friday | Bike to Work Day | Missouri (Designated Days) |
| May-19 | Friday | Michigan Manufacturing Day | Michigan (Special Days) |
| May-19 | Friday | Teacher's Day | Florida (Designated Days) |
| May-20 | Saturday | Anniversary of Mecklenburg Declaration of Independence | North Carolina (Special Days) |
| May-20 | Saturday | Armed Forces Day | Oregon (Commenrations Days) |
| May-20 | Saturday | Armed Forces Day | Virginia (Special Days) |
| May-20 | Saturday | Aviation Maintenance Technician Day | New Jersey (Observed Days) |
| May-20 | Saturday | General Marquis de Lafayette Day | Massachusetts (Special Days) |
| May-21 | Sunday | Citizenship Recognition Day | Oklahoma (Observed Days) |
| May-21 | Sunday | Police, firemen, first aid day | New Jersey (Observed Days) |
| May-22 | Monday | Harvey Milk Day | California (Designated Days) |
| May-22 | Monday | Jim Thorpe Day | Oklahoma (Observed Days) |
| May-22 | Monday | Maine Merchant Marine Day | Maine (Designated Days) |
| May-23 | Tuesday | Crohn's and Colitis Awareness Day | Ohio (Designated Days) |
| May-24 | Wednesday | Senior Citizen's Day | New Jersey (Observed Days) |
| May-25 | Thursday | Children's Memorial Day | New Jersey (Observed Days) |
| May-25 | Thursday | Missing Persons Day | Maine (Designated Days) |
| May-27 | Saturday | Bluegrass Day | Tennessee (Designated Days) |
| May-27 | Saturday | Hubert H. Humphrey, Jr. Day | Pennsylvania (Designated Days) |
| May-27 | Saturday | Rachel Carson Day | Pennsylvania (Designated Days) |
| May-29 | Monday | Birthday of President John F. Kennedy | Massachusetts, Michigan (Special Days) |
| May-29 | Monday | Memorial Day | Federal, New York Stock Exchange, United States Postal Service, US Banks |
| May-29 | Monday | Memorial Day | Alabama, Alaska, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, Florida, Georgia, Hawaii, Idaho, Illinois, Indiana, Iowa, 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) |