An awareness observance on March 21 raising global awareness of Down syndrome, promoting inclusion, human rights, and full participation of people with Down syndrome in society.
Last updated February 26, 2026 · by the
Holiday Calendar Team
Down Syndrome International (DSi) established the observance, first informally held in 2006 with collaboration from the Brazilian Federation of Associations of Down Syndrome. UN General Assembly resolution A/RES/66/149, adopted December 19, 2011 and proposed by Brazil, officially designated March 21 as World Down Syndrome Day from 2012.
World Down Syndrome Day on March 21 is a day to spread awareness and celebrate the lives of those with Down syndrome. It was first established in 2006 after the United Nations General Assembly declared it an official holiday. This year marks the 15th anniversary of World Down Syndrome Day, which just goes to show how far we've come since then! Let's take this opportunity to honor and recognize people living with Down syndrome for their unique strengths, abilities, and contributions they make every day.
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WHY THIS DAY MATTERS
World Down Syndrome Day encourages people to learn more about Down syndrome, understand its complexities, and dispel any misconceptions they may have. It also serves as a platform for sharing stories of individuals living with Down syndrome, which can help foster greater empathy and understanding among society.
World Down Syndrome Day is a great way to spread awareness about the disorder and the individuals who live with it. It helps to create an understanding of what Down syndrome is and how it affects those living with it, as well as advocate for better education, healthcare and social inclusion for these individuals.
World Down Syndrome Day helps to promote equality and inclusion by highlighting the fact that everyone is valuable. By recognizing and celebrating the accomplishments of individuals with Down syndrome, we can show our support and create an environment where everyone is accepted and included in society.
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