World Down Syndrome Day

About World Down Syndrome Day

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

March 21st was selected to signify the uniqueness of the triplication of the chromosome which causes Down syndrome. People with Down syndrome have an extra chromosome (they have 3 copies of chromosome 21 - hence 21/3

Down Syndrome International (DSi) encourages people all over the world to choose their own activities and events on WDSD to help raise awareness of what Down syndrome is, what it means to have Down syndrome, and how people with Down syndrome play a vital role in our lives and communities.

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