3.21 World Down Syndrome Day
Since 2012, the United Nations has observed World Down Syndrome Day every 21 March to raise awareness and advocate for the rights of people with Down Syndrome. The date 3.21 symbolises the extra copy of chromosome 21 that most individuals with Down Syndrome have. This extra chromosome blesses our friends with Down syndrome with a genuine and sincere spirit, filling their lives with possibility and meaning.
Learn more about World Down Syndrome Day.
The Meaning of Mismatched Socks
A sock’s shape is like a chromosome, and a pair of mismatched socks is like the extra chromosome found in people with Down Syndrome. Different, yet each with its own unique character. With a shift in our mindset, even different colours and patterns can create something wonderful. With more acceptance and inclusion, our friends with Down Syndrome can live lives just as vibrant and meaningful as anyone else.
321 Smile
People with Down Syndrome often have a simple, open-hearted, and pure nature. Their smiles are infectious, spreading joy to everyone around them. Inspired by these lovely smiles, our president, Mrs. Victoria Tang-Owen, created the “321 Smile” logo as a memorable symbol to share their positive energy with the community.
Design concept:
- A ribbon fashioned from mismatched socks conveys a friendly and gentle impression, symbolising our friends with Down Syndrome;
- Blue and yellow represents hope, happiness and our acceptance of and support for individuals with Down Syndrome.
World Down Syndrome Day Echo Event 2026
“Pure and True” 321 Smile Photo Exhibition
Through this exhibition, we hope to bring you pure joy by sharing the genuine smiles of people with Down Syndrome and let the public see their happiness, their connections, and their life stories.
Details are as follows:
Date: 21-22 March 2026 (Saturday & Sunday)
Time: 12nn-6pm
Venue: C.C. Wu Building – G/F（302-308 Hennessy Road, Wanchai）
Programme: Photo exhibition, Inclusive craft workshop, Postcard message corner
Enquiries: 2718 7778
* Every visitor will receive a “Pure and True” postcard.
Other Events
“Respect • Inclusion • Care” The 15th World Down Syndrome Day Theme Event
The 15th World Down Syndrome Day theme event, jointly organized by the Down Syndrome Working Committee of the China Association of Intellectual Disabilities and the Guangdong Association for the Mentally Disabled and Their Relatives, will be held from 20 to 22 March, 2026. Our association is honored to be invited to participate in this grand event. We will send representatives from the Down’s Dancing Group and the Down’s Cantonese Opera Group, with a total of 34 people attending, who will perform at the event and interact with other participants.
DS Quick Facts
To enhance public’s understanding on the people with Down Syndrome, we are sharing quick facts to celebrate the unique strengths and charm of our friends with Down Syndrome. Let us create a more accepting and inclusive world together!
Causes of Down Syndrome
Down Syndrome is caused by having an extra copy of chromosome 21. There are three main types:
Trisomy 21: Accounting for about 95% of people with Down Syndrome, Trisomy 21 means that every cell contains three copies of chromosome 21.
Robertsonian translocation: This type accounts for around 5-6% of cases. It happens when the extra copy of chromosome 21 attaches to another chromosome.
Mosaicism: In about 1% of cases, some cells have an extra copy of chromosome 21, while others do not.
Wonderful Qualities of People with Down Syndrome
People with Down Syndrome share wonderful traits. They are optimistic, friendly, and caring. Their warm smiles brighten everyone around them.
Chi Chat with DS People
People with Down Syndrome enjoy chatting and are often very enthusiastic. These simple tips will help you to open up many engaging topics to talk about with them.
Other chapters will be released gradually.
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