Belgium National Day

Belgian National Day also known as Belgium National Day observed annually on 21 July in Belgium.

Commemoration of King Leopold I taking the constitutional oath as the first King of the Belgians on 21 July 1831, marking the foundation of the modern Kingdom of Belgium.

Origin through the Belgian Revolution. Official designation by law in 1890, replacing the earlier National Day of 27 September. Celebration of Belgium's independence, constitutional monarchy, democracy, sovereignty, and national unity.

Military and civilian parades, royal ceremonies, Te Deum service, concerts, cultural events, and fireworks, especially in Brussels. National holiday reflecting Belgian history, heritage, constitutional values, and national identity.