Since its creation in 2008, Rare Disease Day has played a critical part in building an international rare disease community that is multi-disease, global, and diverse– but united in purpose.

Rare Disease Day is observed every year on 28 February (or 29 in leap years)—the rarest day of the year.
Rare Disease Day was set up and is coordinated by EURORDIS and 65+ national alliance patient organisation partners.