On this day in history April 9,
- 1975 – The first game of the Philippine Basketball Association, the second oldest professional basketball league in the world.
- 1975 – 8 people in South Korea, who are involved in People’s Revolutionary Party Incident, are hanged.
- 1980 – The Iraqi regime of Saddam Hussein kills philosopher Muhammad Baqir al-Sadr and his sister Bint al-Huda after three days of torture.
- 1981 – The U.S. Navy nuclear submarine USS George Washington accidentally collides with the Nissho Maru, a Japanese cargo ship, sinking it.
- 1989 – The April 9 tragedy in Tbilisi, Georgian Soviet Socialist Republic, an anti-Soviet peaceful demonstration and hunger strikes, demanding restoration of Georgian independence is dispersed by the Soviet army, resulting in 20 deaths and hundreds of injuries.
- 1991 – Georgia declares independence from the Soviet Union
- 1992 – A U.S. Federal Court finds former Panamanian dictator Manuel Noriega guilty of drug and racketeering charges. He is sentenced to 30 years in prison.