Rare Chromosome and Gene Disorder Awareness Day, also known as Rare Chromo Day, is observed worldwide every year on a Thursday in June. This observance is organized by Unique, a UK-based charity that supports individuals affected by rare gene and chromosome disorders. The day aims to bring together affected individuals and their families to exchange information, share experiences, and advocate for research and better access to diagnosis and treatment. Common symptoms of these disorders include developmental delays, growth abnormalities, and neurological issues. Although most rare genetic disorders are currently incurable, treatment focuses on managing symptoms and improving quality of life. People celebrate by donating to or raising funds for organizations that support patients with these disorders and sharing their stories on social media using the hashtag #RareChromoDay.