April 19th is known as Amaretto Day and Hanging Out Day.
NASA's Ingenuity helicopter became the first helicopter to fly on another planet.
NetherRealm's Mortal Kombat, the first game in the franchise reboot, was released for PS3 and Xbox 360.
Cardinal Joseph Ratzinger was elected as Pope under the name Pope Benedict XVI.
American construction worker Rodney King received $3.8 million in compensation after suffering police brutality on March 3, 1991.
Prolific killer Charles Manson was sentenced to death by gas chamber.
Johnny Cash released his 'Ring of Fire' single.
Grace Kelly married Rainier III, the Prince of Monaco.
The Warsaw Uprising involved Jews in the Warsaw Ghetto resisting Nazi Germany during WWII.
The Roman Catholic Church declared Joan of Arc a saint.
Charles Darwin, who taught the world the theory of evolution by natural selection, died at 73 years old.
The Battle of Lexington and Concord began, which kicked off the American Revolutionary War between 1775 & 1783.
Captain James Cook sighted Australia for the first time.
The town of Chartres in France surrendered to King Henry IV.
The Treaty of Frankfurt was signed between Holy Roman Emperor Charles V and Protestants.
