World Down Syndrome Day (WDSD), 21 March, is a global awareness day which has been officially observed by the United Nations since 2012.

Celebrated annually on March 26, Epilepsy Awareness Day, or Purple Day was created to increase the public’s understanding of this brain disorder and to eliminate the fear and stigma surrounding it.

April 2, World Autism Awareness Day, has been an officially sanctioned United Nations General Assembly Day of Observance since 2008.