The events of , represent one of the most significant and catastrophic episodes in the history of early global exploration. Following the death of Ferdinand Magellan at the Battle of Mactan on April 27, 1521, the remaining members of the Spanish expedition found themselves in a precarious political and security environment in the port of Cebu.

Significant Events in May in Filipino History
Felipe Padilla de León (1912-1992) was a composer, conductor, and scholar who spent his life capturing the Filipino spirit through music. He treated his craft not just as art but as a mission to affirm the nation's cultural identity. Posthumously named National Artist for Music in 1997, he stands as the most prolific Filipino composer of the post‑war period, producing an extraordinary legacy - from monumental operas to his contributions to the lyrics of the national anthem.
The historiography of the Philippine Revolution of 1896 has traditionally emphasized the military exploits and political rivalries of its male protagonists, often relegating the women of the movement to the periphery of the national narrative. Yet, the structural integrity and logistical survival of the Kataastaasan, Kagalanggalangang Katipunan ng mga Anak ng Bayan (KKK) or Katipunan were inextricably linked to a clandestine network of female operatives who managed the movement's most vulnerable resources. At the center of this network was Espiridiona "Nonay" Bonifacio y de Castro, the younger sister of the Katipunan's founder and Supremo, Andres Bonifacio. Born in Tondo, Manila on , her life, which spanned the twilight of the Spanish colonial era, the entirety of the American occupation, and the first decade of the independent Philippine Republic, serves as a vital bridge between the lived reality of the revolution and its subsequent institutionalization in the Filipino consciousness.
On May 1, 1954, Ferdinand Marcos and Imelda Romualdez were married at the Pro Cathedral of San Miguel in Manila, after being married in a civil ceremony in Baguio City. Though they seemed an unlikely match, Marcos being a Liberal and an Ilocano and Imelda being a Nacionalista by family tradition and a Waray-waray, he pursued her.
On May 1, 1898, the naval battle between a squadron of the United States led by Admiral Geroge Dewey and a Spanish fleet under Admiral Montojo took place in Manila Bay, destroying the Spanish fleet. Soon after, the Spanish Governor-General intimated his willingness to surrender Manila but Dewey had no enough force to occupy the city.
On May 1, 1903, the first Labor Day celebration in the Philippines took place. It was organized by the Union Obrera Democratica de Filipinas, the first labor federation in the country. Thousands of workers marched from Plaza Moriones in Tondo to Malacañang to demand complete independence, while chanting anti American capitalism and imperialism.
On May 2, 1929, Eddie Garcia was born Eduardo Verchez Garcia in Juban, Sorsogon to Antonio Garcia and Vicenta Verchez. He was regarded as the "Greatest Filipino actor of All Time", the only Filipino actor to have been inducted in three categories in the Filipino Academy of Movie Arts and Sciences (FAMAS) Award Hall of Fame: Best Actor, Best Supporting Actor, and Best Director.
On May 2, 1902, on urgent recommendation of the Philippine Commission, the US Congress passed an act authorizing a coinage system for the Philippines with a standard Philippine dollar, or "peso", worth fifty cents of American money and exchangeable at government treasuries for this amount.
Concordia College, officially known as the Colegio de la Inmaculada Concepcion de la Concordia, is a private Catholic institution located in Paco, Manila. It was founded in 1868 by Doña Margarita Roxas de Ayala, who converted her three-and-a-half-hectare villa, the La Concordia Estate, into a school.
On May 3, 1968, Ford automotive assembly plant was formally inaugurated 50 years after Ford came to the Philippines. President and Mrs. Marcos were the principal sponsors and Reverend Father Pacifico Ortiz, S. J., officiated the invocation and blessing ceremonies. Industry Undersecretary Cesar Virata stood proxy for the President who was in Bicol at the time.