Template:On this day/20 Apryle
- 1534 – Jacques Cartier begins his first voyage tae whit is the day the east coast o Canadae, Newfoundland an Labrador.
- 1653 – Oliver Cromwell dissolves the Rump Pairlament.
- 1898 – U.S. Preses William McKinley signed a jynt resolution tae Congress for declaration o War against Spain, beginnin the Spaingie–American War.
- 1999 – Columbine High School massacre: Eric Harris an Dylan Klebold killt 13 fowk an injured 24 ithers afore committing suicide at Columbine High School in Columbine, Colorado.
- 2010 – The Deepwater Horizon drillin rig explodes (picturt) in the Gulf o Mexico, killin eleven wirkers an beginnin an ile spill that wad last sax months.
Adolf Hitler (b. 1889) · Andy Serkis (b. 1964) · Avicii (d. 2018)