Wikipedia:Selected anniversaries/April 12
April 12: Passover begins at sunset (Judaism, 2006), Yuri's Night
- 467 - Anthemius became Emperor of the Western Roman Empire.
- 1633 - The formal interrogation of Galileo Galilei by the Inquisition began.
- 1961 - Soviet cosmonaut Yuri Gagarin became the first man to enter outer space.
- 1980 - Terry Fox dipped his artificial leg in the Atlantic Ocean and began running his Marathon of Hope towards the Pacific Ocean to raise funds across Canada for cancer research.
- 1981 - Columbia, the first space shuttle, was launched for its first flight (pictured).