May 1, 2027 Orthodox Holy Saturday
May 1, 2027 Kentucky Derby
May 1, 2027 National Explosive Ordnance Disposal (EOD) Day
May 2, 2027 Orthodox Easter
May 2, 2027 World Tuna Day
May 3, 2027 Orthodox Easter Monday
May 3, 2027 World Press Freedom Day
May 4, 2027 Kent State Shootings Remembrance
May 4, 2027 Rhode Island Independence Day
May 5, 2027 Cinco de Mayo
May 6, 2027 Ascension Day
May 6, 2027 National Nurses Day
May 6, 2027 National Day of Prayer
May 7, 2027 Truman Day observed
May 7, 2027 Military Spouse Appreciation Day
May 8, 2027 Time of Remembrance and Reconciliation for Those Who Lost Their Lives during the Second World War
May 8, 2027 World Migratory Bird Day
May 8, 2027 World Ovarian Cancer Day
May 8, 2027 Victory in Europe Day
May 10, 2027 Confederate Memorial Day
May 10, 2027 Confederate Memorial Day
May 12, 2027 Yom Ha'atzmaut
May 12, 2027 International Nurses Day
May 14, 2027 Native American Day
May 15, 2027 International Day of Families
May 15, 2027 Peace Officers Memorial Day
May 15, 2027 Armed Forces Day
May 15, 2027 Preakness Stakes
May 17, 2027 World Information Society Day
May 19, 2027 Emergency Medical Services for Children Day
May 20, 2027 World Autoimmune
May 21, 2027 World Day for Cultural Diversity for Dialogue and Development
May 21, 2027 National Defense Transportation Day
May 22, 2027 International Day for Biological Diversity
May 22, 2027 National Maritime Day
May 22, 2027 Harvey Milk Day
May 23, 2027 Trinity Sunday
May 23, 2027 International Day to End Obstetric Fistula
May 25, 2027 African Liberation Day
May 25, 2027 National Missing Children's Day
May 27, 2027 Corpus Christi
May 29, 2027 International Day of United Nations Peacekeepers
May 31, 2027 World No Tobacco Day
May 31, 2027 Memorial Day
May 31, 2027 Jefferson Davis' Birthday
May 20, 2027 Autoinflammatory Arthritis Day