Philippine Declaration of Independence
Following the end of World War II, the United States granted independence to the Philippines on 4 July 1946 via the Treaty of Manila. July 4 was observed in the Philippines as "Independence Day" until August 4, 1964 when, upon the advice of historians and the urging of nationalists, President Diosdado Macapagal signed into law Republic Act No. 4166 designating June 12 as the country's "Independence Day". June 12 had previously been observed as "Flag Day" and many government buildings are urged to display the Philippine Flag in their offices.
Commonwealth (U.S. insular area)
The Commonwealth of the Philippines was an insular area that held commonwealth status from November 15, 1935 until July 4, 1946. The United States recognized the future independence of the Philippines in 1934 but called for a transitional ten-year period from 1934 up to 1944. The Second World War disrupted the schedule and the Philippines became fully independent in 1946.