Trisomy 18 Awareness Day, also known as Edwards Syndrome Awareness Day, is observed worldwide every March 18. This day was created to highlight Trisomy 18, a genetic disorder characterized by three copies of a specific chromosome, which affects various parts of the body, including the head and heart. The condition, first identified by John Hilton Edwards in 1960, leads to severe disabilities and requires lifelong special care for affected individuals. Events on this day aim to educate the public about Trisomy 18 and support families dealing with the syndrome. Participants are encouraged to learn more about the disorder, share information, donate to relevant organizations, and use social media hashtags like #Trisomy18AwarenessDay and #EdwardsSyndromeAwarenessDay.