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Event Series Event Series: World Down Syndrome Day

World Down Syndrome Day

March 21, 2026 All day

World Down Syndrome Day (WDSD), March 21st, is a global awareness day which has been officially observed by the United Nations since 2012.  The date for WDSD, 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.  To learn more, visit: https://www.worlddownsyndromeday.org/