May 8, 1967
Davao province was divided into three provinces: Davao del Norte, Davao del Sur and Davao Oriental by virtue of Republic Act No. 4867 authored by then Rep. Lorenzo Sarmiento Sr.
May 12, 1899
Filipino troops, under the command of Emilio Aguinaldo, recaptured the towns of Calumpit and Baliwag from American forces.
May 12, 1962
The celebration of Philippine Independence Day was moved by then President Diosdado Macapagal to June 12 from July 4. On June 12 of that same year, Macapagal and Emilio Aguinaldo commemorated Independence Day at the Aguinaldo Mansion in Kawit, Cavite province.
Compiled by Kathleen de Villa, Inquirer Research
Sources: Inquirer Archives, DOT, Official Calendar of the Republic, Historical Calendar (1521-1969)