Wikipedia:Selected anniversaries/April 19
- 797 – Byzantine emperor Constantine VI was captured, blinded, and imprisoned by the supporters of his mother Irene.
- 1809 – War of the Fifth Coalition: The French won a hard-fought victory over Austria in Lower Bavaria when their opponents withdrew from the field of battle that evening.
- 1927 – American actress Mae West (pictured) was sentenced to ten days in jail for "corrupting the morals of youth" for her play Sex.
- 1971 – The first space station, Salyut 1, was launched from the Baikonur Cosmodrome near Tyuratam, Kazakh SSR, USSR.
- 1984 – "Advance Australia Fair", written by Scottish-born composer Peter Dodds McCormick, officially replaced "God Save the Queen" as Australia's national anthem.