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Today until World Down Syndrome Day 2026!

World Down Syndrome Day 2026 falls on March 21, 2026. Use the countdown to plan your celebration — history, traditions, fun facts and emoji stickers below.

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📖 Read the full World Down Syndrome Day guide →

🧦 About World Down Syndrome Day

Raises awareness of Down syndrome; the date 3/21 symbolizes the triplication of chromosome 21. Celebrated in world.

🔗 More observances to look forward to

Global Family DayWorld Introvert DayWorld Braille DayNational Bird DayData Privacy DayWorld Wetlands Day