Missouri Germans is celebrating the Day of German Unity! Germany’s unification did not become official until the leaders of both countries- East and West Germany – signed the Treaty of Unification in August of 1990. This established October 3rd as the official day of unification, and today marks the 26th anniversary of the official unification. Tag der Deutschen Einheit, or the Day of German Unity, is a national holiday in Germany with ceremonial festivities scheduled in a different city each year. Wishing you a happy Day of German Unity.