May 1, 2003 National Day of Prayer
May 2, 2003 Kentucky Oaks
May 3, 2003 World Press Freedom Day
May 3, 2003 Kentucky Derby
May 4, 2003 Kent State Shootings Remembrance
May 4, 2003 Rhode Island Independence Day
May 5, 2003 Cinco de Mayo
May 6, 2003 National Nurses Day
May 7, 2003 Yom Ha'atzmaut
May 8, 2003 Victory in Europe Day
May 9, 2003 Confederate Memorial Day observed
May 10, 2003 Confederate Memorial Day
May 11, 2003 Mother's Day
May 12, 2003 International Nurses Day
May 14, 2003 The Prophet's Birthday
May 15, 2003 International Day of Families
May 15, 2003 Peace Officers Memorial Day
May 16, 2003 National Defense Transportation Day
May 17, 2003 Armed Forces Day
May 17, 2003 Preakness Stakes
May 21, 2003 World Day for Cultural Diversity for Dialogue and Development
May 22, 2003 International Day for Biological Diversity
May 22, 2003 National Maritime Day
May 25, 2003 African Liberation Day
May 25, 2003 National Missing Children's Day
May 26, 2003 Memorial Day
May 26, 2003 Jefferson Davis' Birthday
May 29, 2003 Ascension Day
May 29, 2003 International Day of United Nations Peacekeepers
May 31, 2003 World No Tobacco Day