Apr 1, 2001 Daylight Saving Time starts
Apr 1, 2001 April Fool's Day
Apr 2, 2001 Pascua Florida Day
Apr 6, 2001 National Tartan Day
Apr 7, 2001 United Nations' World Health Day
Apr 8, 2001 Passover (first day)
Apr 12, 2001 Maundy Thursday
Apr 13, 2001 Orthodox Good Friday
Apr 13, 2001 Friday the 13th
Apr 14, 2001 Holy Saturday
Apr 14, 2001 Orthodox Holy Saturday
Apr 15, 2001 Last day of Passover
Apr 15, 2001 Orthodox Easter
Apr 15, 2001 Easter Sunday
Apr 15, 2001 Father Damien Day
Apr 16, 2001 Orthodox Easter Monday
Apr 16, 2001 Easter Monday
Apr 16, 2001 Emancipation Day
Apr 16, 2001 Patriot's Day
Apr 16, 2001 Boston Marathon
Apr 21, 2001 San Jacinto Day
Apr 22, 2001 Oklahoma Day
Apr 23, 2001 World Book and Copyright Day
Apr 23, 2001 Confederate Memorial Day
Apr 23, 2001 Confederate Heroes' Day
Apr 25, 2001 Administrative Professionals Day
Apr 26, 2001 Yom Ha'atzmaut
Apr 26, 2001 World Intellectual Property Day
Apr 26, 2001 Confederate Heroes' Day
Apr 30, 2001 Confederate Memorial Day