INTERNATIONAL DAY

World Down Syndrome Day

Celebrate the uniqueness of individuals with Down syndrome on this special day, advocacy and awareness are key themes.

MAR21

Sunday, March 21Every year on March 21

days to go

Roots: First observed in 2006
Vibe: Celebratory and educational
Also on Mar 21: Memory Day · Quilting Day · Single Parent Day
Hashtag: #WorldDownSyndromeDay

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3 ways to celebrate

AT HOME

Read and learn together

Explore books and videos about Down syndrome and talk about inclusion as a family.

WITH FRIENDS

Wear bright mismatched socks

Rock two different colorful socks to spark kind conversations about inclusion.

AT WORK OR SCHOOL

Invite a guest speaker

Host someone from a Down syndrome organization to share stories and answer questions.

Plan ahead

World Down Syndrome Day is observed on March 21 every year. Here is where it lands for the next ten years, handy for planners, marketers and party people.

2026Sat, Mar 21this year

2027Sun, Mar 21

2028Tue, Mar 21

2029Wed, Mar 21

2030Thu, Mar 21

2031Fri, Mar 21

2032Sun, Mar 21

2033Mon, Mar 21

2034Tue, Mar 21

2035Wed, Mar 21

2036Fri, Mar 21

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Fast facts

1In 700 births in the U.S.

Approximately 6,000Babies born with Down syndrome annually in the U.S.

The story

World Down Syndrome Day (WDSD) is an annual event that takes place on March 21, symbolizing the triplication of the 21st chromosome, which causes Down syndrome. Established in 2006 by Down Syndrome International, this day has grown into a worldwide celebration, with events occurring in schools, communities, and online.

Read the full story

The observance encourages people to participate in activities that promote the rights, inclusion, and well-being of individuals with Down syndrome. Schools often host educational programs, while advocacy groups organize walks and fundraisers to spread awareness. These events serve not only as celebrations but also as powerful platforms for education.

In the U.S., organizations like the National Down Syndrome Society (NDSS) lead the charge by providing resources and support for families and individuals affected by Down syndrome. They emphasize the importance of inclusion in education, employment, and community life, driving home the message that everyone deserves equal opportunities.

Internationally, countries celebrate WDSD with their unique traditions, showcasing the universal desire for acceptance and understanding. From the United Kingdom to Australia, individuals and groups come together to advocate for a world where people with Down syndrome can thrive and be valued members of society.