World Down Syndrome Day (WDSD), 21 March, is a global awareness day which has been officially observed by the United Nations since 2012.
The date for WDSD being the 21st day of the 3rd month, was selected to signify the uniqueness of the triplication (trisomy) of the 21st chromosome which causes Down syndrome.
We encourage communities, schools, clubs, companies and individuals to choose their own activities and events to celebrate WDSD and to help raise awareness of this very special celebration. Together we can challenge perceptions of Down syndrome and enable people with Down syndrome to speak up, be heard and be respected as valued members of society as they strive to achieve their goals and pursue their passions.