If something is ceremonial it is proper for a ceremony: The victory was marked by a ceremonial parade; The best china was brought out only on ceremonial occasions. If it is ceremonious it is done with great ceremony, that is, extremely politely or formally: He gave my wife a ceremonious bow, as if she were a princess.
Yellow represents the golden land of South America. Blue stands for the ocean separating the country from Spain. Red symbolizes the blood and courage of the people resisting the tyrants. Effective date: 26 November 1861.