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.
President of the Philippines
As with many other Axis-occupied countries in the Second World War, the Philippines had at one point two presidents heading two governments. One was Quezon and the Commonwealth government-in-exile in Washington, D.C., and the other was Manila-based Laurel heading the Japanese-sponsored Second Republic. Notably, Laurel was himself instructed to remain in Manila by President Quezon. Laurel was not formally recognized as a President until the rule of Diosdado Macapagal. His inclusion in the official list coincided with the transfer of the official date of Independence Day from July 4 (the anniversary of the Philippines' independence from the United States) to June 12 (the anniversary of the 1898 Declaration of Independence).