May 1, 2026 Kentucky Oaks
May 2, 2026 World Tuna Day
May 2, 2026 Kentucky Derby
May 2, 2026 National Explosive Ordnance Disposal (EOD) Day
May 3, 2026 World Press Freedom Day
May 4, 2026 Kent State Shootings Remembrance
May 4, 2026 Rhode Island Independence Day
May 5, 2026 Cinco de Mayo
May 6, 2026 National Nurses Day
May 7, 2026 National Day of Prayer
May 8, 2026 Time of Remembrance and Reconciliation for Those Who Lost Their Lives during the Second World War
May 8, 2026 World Ovarian Cancer Day
May 8, 2026 Victory in Europe Day
May 8, 2026 Native American Day
May 8, 2026 Military Spouse Appreciation Day
May 9, 2026 World Migratory Bird Day
May 10, 2026 Mother's Day
May 10, 2026 Confederate Memorial Day
May 10, 2026 Confederate Memorial Day
May 11, 2026 Confederate Memorial Day observed
May 12, 2026 International Nurses Day
May 12, 2026 Primary Election Day
May 14, 2026 Ascension Day
May 15, 2026 International Day of Families
May 15, 2026 Peace Officers Memorial Day
May 15, 2026 National Defense Transportation Day
May 16, 2026 Armed Forces Day
May 16, 2026 Preakness Stakes
May 17, 2026 World Information Society Day
May 20, 2026 World Autoimmune
May 20, 2026 Emergency Medical Services for Children Day
May 21, 2026 World Day for Cultural Diversity for Dialogue and Development
May 22, 2026 International Day for Biological Diversity
May 22, 2026 National Maritime Day
May 22, 2026 Harvey Milk Day
May 23, 2026 International Day to End Obstetric Fistula
May 25, 2026 African Liberation Day
May 25, 2026 Memorial Day
May 25, 2026 Jefferson Davis' Birthday
May 25, 2026 National Missing Children's Day
May 29, 2026 International Day of United Nations Peacekeepers
May 31, 2026 Trinity Sunday
May 31, 2026 World No Tobacco Day
May 20, 2026 Autoinflammatory Arthritis Day