Each year on March 21, communities around the world observe World Down Syndrome Day, a day dedicated to raising awareness and celebrating the lives and contributions of people with Down syndrome.

The date – 3/21-was chosen because people with Down syndrome have three copies of the 21st chromosome, instead of the usual two. The day was officially recognized by the United Nations in 2012 and has since become a global movement promoting understanding, inclusion, and support.

On this day, individuals, schools, and organizations often wear brightly colored or mismatched socks. The socks are meant to start conversations and symbolize the uniqueness and diversity of every person. Activities around the world include educational programs, community events, and social media campaigns encouraging people to ‘Rock Your Socks’ to show support.

Down syndrome is a genetic condition that occurs in about one in every 700 babies born in the United States. Thanks to advances in medical care, education, and community support, people with Down syndrome are living longer, healthier, and more active livesthan ever before.

World Down Syndrome Day is a reminder that every person has unique talents and abilities. By learning more and supporting inclusion in schools, workplaces, and communities, people everywhere can help create a world where everyone belongs.