May 7 – A Philippine AirlinesC-47[7] with Daet–Manila flight route[8] explodes in mid-air;[7] all 13 persons on board are reported killed,[9] with only a body later recovered, along with the plane's debris at Alabat Island.[7] The explosion is later revealed being caused by a time bomb which has been planted by a couple. At least four suspects are arrested.[9]
June 1 – Eleven guerrillas are killed by government forces in an Huk outpost on a camp in the Sierra Madre. The following day, the base-camp near Mount Guiniat, which turns out to be "Stalin University", is captured; 37 more Huks are killed in the ensuing week-long operation. Since May, joint Constabulary and Army forces have been pursuing Huks involved in the ambush of Quezon's group.[5]
September 11 – Huk commander Alexander Viernes is killed by the Philippine Army near Kangkong in the Sierra Madre, following a two-month search, ending the four-month operation with an entire Huk regional command dismantled, 146 insurgents killed and 40 more captured.[5] The death toll might be higher as the constabulary has estimated this at 500 by late July.[11]
October 31 – The date, which has been set by the national government, as the deadline for the evacuation of persons in an International Refugee Organization (IRO) refugee camp in Sturbabao Island off Samar, which has been established in February and houses more than 5,000 people. By late November, there are still 3,800, mostly white Russians, in the said resettlement camp.[13]
November 1–3 – Visayas is hit within two days by what would be the worst typhoon in 12 years before leaving for South China Sea. Damages are estimated at $25 million.[14] Affected islands are Cebu, where a 100-mph wind is the worst in 37 years, and 15 people are killed;[14][15] and Negros, where 200 additional deaths are reported,[15] and Panay being stricken 12 hours earlier than forecast.[14]
November 26 – The national government formally rejects a request by the IRO for an extension for settling political refugees from China encamped in the country.[13]
As per Act No. 2711 section 29,[16] issued on March 10, 1917, any legal holiday of fixed date falls on Sunday, the next succeeding day shall be observed as legal holiday. Sundays are also considered legal religious holidays. Bonifacio Day was added through Philippine Legislature Act No. 2946. It was signed by then-Governor General Francis Burton Harrison in 1921.[17] On October 28, 1931, the Act No. 3827 was approved declaring the last Sunday of August as National Heroes Day.[18]