The World Autism Awareness Day (WAAD) 2015 is on April, 02. It was designated under by the United Nations General Assembly resolution "62/139. World Autism Awareness Day," adopted on December 18, 2007, proposed by Representatives of the State Qatar, and supported by all member states.
The World Autism Awareness Day Resolution had four main components: (1) the establishment of April 2 as WAAD, (2) participation of UN organizations, member states, NGOs and all private & public organizations in WAAD, (3) raise awareness of Autism on all levels in society, (4) Security-General should deliver this message to member states and all other UN organs.
Autism is a disorder of neural development characterized by impaired social interaction and communication, and by restricted and repetitive behavior. These signs all begin before a child is three years old. Not many children with autism live independently after reaching adulthood, though some become successful. An autistic culture has developed, with some individuals seeking a cure and others believing autism should be accepted as a difference and not treated as a disorder. (With material from: Wikipedia)