Celebrating Kids With Down Syndrome Help empower children with Down Syndrome through the TinySuperheroes Cape Program. Each cape says, "You belong here" to a child with Down syndrome. Your gift shows them they are loved, valuable, and gives them Courage, Strength and Hope for the future. Your sponsorship today, even the tiniest amount, will help kids discover their superpowers of Courage, Strength and Hope. World Down Syndrome Day is celebrated on March 21st (3/21) to signify Trisomy 21, the scientific description of Down syndrome or the 3rd copy of the 21st chromosome. Celebrate 3/21 by sporting colorful mismatched socks to represent chromosomes and show that uniqueness is fun and worth celebrating.