1970 in the Philippines

• President: Ferdinand Marcos (Nacionalista Party)
• Vice President: Fernando Lopez (Nacionalista Party)
• House Speaker: José Laurel, Jr.
• Chief Justice: Roberto Concepcion
• Congress: 7th (starting January 26)

• January to March – The First Quarter Storm^[1] was a period of leftist unrest in the Philippines, composed of a series of heavy demonstrations, protests, and marches against the government.
• January 26 – Pres. Marcos delivers his State of the Nation Address at the Legislative Building, Manila. Student groups, led by the National Union of Students of the Philippines and Kabataang Makabayan, conducts a rally outside the building, in which, are confronted by the riot police as they march to Malacañang, leaving many injuries.^[2]
• January 30 – Another confrontation between riot police and about 2,000 demonstrators, mostly students, outside Malacañang Palace, kills six people in what would be called the "Battle of Mendiola," and marks the beginning of the First Quarter Storm.^[2]

• February 10 – President Marcos issues a moratorium on executions pending a study by Congress on the death penalty. Such general reprieve to all convicts will be lifted in early 1972.^[3]
• February 18 – United States Embassy in Manila is attacked by an estimated 2,000-3,000 youths, who had broken from a massive peaceful demonstrations,^[4] after holding a People's Congress in Plaza Miranda.^[2]

• March 3 – A People's March is organized by the Movement for a Democratic Philippines, and the group marches from Welcome Rotonda in Quezon City to Post Office Building in Plaza Lawton, Manila.^[2]

• April 5 – 7 – Demonstrations and strikes against oil price and transportation cost increases, and violent anti-American riots break out.^[2]
• April 7 – Destructive earthquake shook the Manila area, killed 15 persons and injured 200 others.^[4]
• April 21 – Philippine twin-engine Hawker Siddeley, ripped by an explosion in the tail section, fell near the village of Pantabangan, Nueva Ecija, all 36 aboard died.^[4]

• May 20 – Another protest actions against Marcos government and the involvement of United States in Vietnam War are held.^[2]

• June 12 – Philippine fishing boat "Baby Princess" capsized in a violent storm 300 miles southwest of Manila, 22 persons were rescued, 22 others were devoured by sharks.^[4]

• October 13 – Super Typhoon Sening landfalls on Lagonoy Gulf with sustained winds of 280 km/h. Sening left over 80,000 people homeless, in addition to killing 575 people (193 people were unaccounted for, and have since been declared dead, bringing the total toll to 768) and injuring nearly 1600.^[5] US$74 million (1970 US$, $373 million 2005 USD) of damage was estimated.

• November 10 – A nationwide election is held for 320 delegates—representing all the legislative districts—among 2,482 candidates, of the Constitutional Convention, which will meet to revise the Commonwealth-era (1935) Constitution.^[6][2]
• November 19 – Philippine military officials denied charges made by Senator Stuart Symington (Democratic; Missouri) that the United States had provided cash assistance to the Philippine contingent in Vietnam.^[4]
• November 20 – Violent typhoon (Typhoon Patsy or Yoling) with winds of (more than) 125 mph raged through the heavily populated (Luzon) island, wrecking the harbor and airport facilities at Manila.^[4] Typhoon Patsy was one of the deadliest typhoons to strike the Philippines in its history. 611 people were killed (with 351 missing) on the island, and 135 people were killed at sea due to shipping failures. In Manila, 120 persons died, 60 others were missing, and more than 1,000 injured; property damage reached $80 million.^[4]
• November 27–29 – Papal visit of Pope Paul VI, the country's first. Upon his arrival at Manila International Airport, he survived an assassination attempt by a Bolivian painter, Benjamin Mendoza (a knife-wielding assailant dressed as a priest^[4]).^[2][7][8]

• December 29 – The New People's Army conducts a raid in the armory of the Philippine Military Academy, with Lt. Victor Corpuz, academy's constabulary officer, as its accomplice.^[2]

As per Act No. 2711 section 29,^[9] 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.^[10] On October 28, 1931, the Act No. 3827 was approved declaring the last Sunday of August as National Heroes Day.^[11] As per Republic Act No. 3022,^[12] April 9 is proclaimed as Bataan Day. Independence Day was changed from July 4 (Philippine Republic Day) to June 12 (Philippine Independence Day) on August 4, 1964.^[13]

• January 1 – New Year's Day
• February 22 – Legal Holiday
• March 27 – Maundy Thursday
• March 28 – Good Friday
• April 9 – Araw ng Kagitingan (Day of Valor)
• May 1 – Labor Day
• June 12 – Independence Day
• July 4 – Philippine Republic Day
• August 13 – Legal Holiday
• August 30 – National Heroes Day
• November 26 – Thanksgiving Day
• November 30 – Bonifacio Day
• December 25 – Christmas Day
• December 30 – Rizal Day

• June 1 - NewsWatch, the longest-running newscast premiered on KBS-9 (now RPN-9 until 2012).

• Sesame Street, premiered on KBS-9 (now RPN-9 until 1980).

• August 24 – September 4 – The country participated in the 1970 Asian Games held in Bangkok, Thailand. It ranked 11th with 1 gold medal, 9 silver medals and 12 bronze medals with a total of 22 over-all medals.^[14]