■April Fool's Day ―Monday, April 1, 2013 ■César Chávez Day ―Monday, April 1, 2013 ■Last day of Passover ―Tuesday, April 2, 2013 ■Pascua Florida Day ―Tuesday, April 2, 2013 ■World Autism Awareness Day ―Tuesday, April 2, 2013 ■United Nations' Mine Awareness Day ―Thursday, April 4, 2013 ■National Tartan Day ―Saturday, April 6, 2013 ■Day of Remembrance of the Victims of the Rwanda Genocide ―Sunday, April 7, 2013 ■United Nations' World Health Day ―Sunday, April 7, 2013 ■Yom HaShoah ―Monday, April 8, 2013 ■International Day of Human Space Flight ―Friday, April 12, 2013 ■Patriot's Day ―Monday, April 15, 2013 ■Father Damien Day ―Monday, April 15, 2013 ■Tax Day ―Monday, April 15, 2013 ■Emancipation Day ―Tuesday, April 16, 2013 ■Yom HaAtzmaut ―Tuesday, April 16, 2013 ■San Jacinto Day ―Sunday, April 21, 2013 ■Oklahoma Day ―Monday, April 22, 2013 ■Earth Day ―Monday, April 22, 2013 ■Confederate Memorial Day ―Monday, April 22, 2013 ■World Book and Copyright Day ―Tuesday, April 23, 2013 ■Administrative Professionals Day ―Wednesday, April 24, 2013 ■World Malaria Day ―Thursday, April 25, 2013 ■World Intellectual Property Day ―Friday, April 26, 2013 ■Arbor Day ―Friday, April 26, 2013 ■Global Youth Service Day ―Friday, April 26, 2013 ■World Day for Safety and Health at Work ―Sunday, April 28, 2013 ■Lag B'Omer ―Sunday, April 28, 2013 ■Day of Remembrance for all Victims of Chemical Warfare ―Monday, April 29, 2013 ■Confederate Memorial Day ―Monday, April 29, 2013 ■International Jazz Day ―Tuesday, April 30, 2013