Different Looks Good Here.
Every person has something special to bring to the world. World Down Syndrome Day is a chance to celebrate people with Down syndrome, challenge misconceptions, and remind everyone that belonging matters.
Because a more inclusive world is a better world for all of us.
- 3Copies
- 21Chromosome
- 3/21The Date
Why 3.21?
Most people have two copies of chromosome 21. The most common form of Down syndrome involves three full copies, though not everyone has the same form. Some people have an extra partial copy.
That’s why March 21, the 21st day of the third month, represents Down syndrome.
The United Nations declared World Down Syndrome Day in December 2011 and has recognized it as an annual observance since 2012.
What Is Down Syndrome?
Down syndrome is a genetic condition caused by an extra full or partial copy of chromosome 21. It is not contagious.
- Every person is an individualPeople may share some characteristics, but each has their own personality, interests, strengths and goals.
- Support is personalSome people need more support in certain areas of life than others. Everyone deserves respect and the support they need.
- Learn, work, connectPeople with Down syndrome can learn, work, build friendships and contribute to their communities.
- Opportunity and choice matterLike anyone, they deserve opportunities to build relationships, make choices and take part fully in their communities.
Awareness Is Where We Start. Inclusion Is What We Build.
Awareness helps us recognize and understand differences. Inclusion is what happens next: inviting someone to take part, making sure a classroom welcomes every student, creating workplaces with opportunity, and building friendships where people feel valued.
In the classroom
Make sure every student is welcomed, invited and expected to belong.
Among friends
Invite someone to play, sit with you, join in. Then keep inviting.
At work
Create workplaces where people of different abilities have real opportunities.
In your community
Build places where people feel valued, not just present.
You Are Valued. You Belong Here. We Celebrate You.
World Down Syndrome Day is about more than one day. It’s about making belonging part of everyday life.
What’s With All the Colorful Socks?
You may notice people wearing bright, mismatched socks on March 21. It’s part of the global Lots of Socks campaign, which uses bold, eye-catching socks to help the Down syndrome community share its voice.
Socks get people asking questions, and questions open the door to talking about Down syndrome, inclusion and belonging. Wear your brightest pair, mix and match, invite friends, then share why you’re celebrating.
It’s a simple way to start a meaningful conversation.
Try Rock Your Socks: pick two that don’t match, wear them proudly, and tell one person what 3/21 means.
Hover to wiggle. Tap to mix it up.Tap to mix it up.
Let’s Talk About Down Syndrome.
Sometimes people avoid conversations about disability because they worry about saying the wrong thing. But respectful conversations build understanding and help everyone feel included. You don’t have to know everything. Listening, learning and kindness are a great place to start.
“The goal isn’t to say everything perfectly. It’s to help create a world where everyone feels seen, respected, and included.”
1Put the person first
How should I refer to someone with Down syndrome?
Down syndrome is one part of who someone is, not all of it. Use respectful language that leads with the person.
“Person with Down syndrome” is generally a respectful way to refer to someone. Also respect how each individual prefers to describe themselves.
Names beat labels: when you can, just use the person’s name.
2It’s okay to ask questions
Is it okay to ask questions about Down syndrome?
Curiosity can lead to understanding when questions are asked with respect.
If your child notices someone who looks, communicates or moves differently, use the moment to explain that everyone is unique and deserves kindness.
Avoid expecting someone to answer personal or medical questions about their disability. For general questions, learn together using a trusted educational source. Respect privacy, and let people decide what they want to share.
3Talk about differences positively
How do I talk about differences with children?
Differences are a normal part of being human. Help children see that people learn, communicate, play and experience the world in different ways.
Different doesn’t mean less.
4Focus on friendship and inclusion
How can children include classmates with Down syndrome?
Encourage children to invite others to play, include classmates in activities and get to know people beyond their differences.
Friends, not just helpers: the most meaningful thing we can do is make sure someone feels welcome.
Included is different from just being there. Notice who is invited in, not only who is in the room.
5Don’t make assumptions
Can I assume what a person with Down syndrome can or cannot do?
People with Down syndrome have different personalities, interests, abilities and support needs.
Avoid guessing what someone can or cannot do based on a diagnosis. Ask, listen and offer support when it is wanted.
What Can I Say?
When a child asks, “Why do they look different?”
“Everyone looks a little different. Some people have Down syndrome, which means their bodies and brains develop a little differently. They’re a person just like you, with their own favorite things, feelings, and interests.”
When someone asks, “What is Down syndrome?”
“Down syndrome happens when someone has an extra full or partial copy of chromosome 21. It can affect how they grow and learn, but it doesn’t define who they are.”
When someone says, “I don’t know what to say.”
“You don’t need special words. Say hello, introduce yourself, and get to know the person.”
Now Let’s Make March 21 a Little Extra.
Learning is a great first step. Taking part turns awareness into action. Celebrate 3.21 is a communitywide initiative bringing families, schools, businesses, churches and neighbors together.
You don’t need to organize a big event or make a donation. You just need to find one meaningful way to participate.
Your extra matters.
Discover ways to celebrate and officially register to be part of Celebrate 3.21.
Learned from: United Nations , NDSS , Official Lots of Socks campaign . Language guidance is general; individuals may prefer different terms.