September 22, 1943: the Philippine national anthem and the national flag were declared official symbols

, during the tumultuous period of the Japanese occupation in World War II, Jorge B. Vargas, Chairman of the Philippine Executive Commission, issued Executive Order No. 211. This decree officially designated the Philippine National Flag and the Philippine National Anthem (Marcha Nacional Filipina) as the official national symbols of the Philippines, laying down strict guidelines for their layout, performance, and public display.