Template:On this day/20 Mey
- 325 – The First Cooncil o Nicaea is formally appent, stairtin the first ecumenical cooncil o the Christian Kirk.
- 1498 – Portuguese explorer Vasco da Gama diskivers the sea route tae Indie whan he arrives at Kozhikode (previously kent as Calicut), Indie.
- 1883 – Krakatoa begins tae erupt (picturt); the volcano explodes three months later, killin mair nor 36,000 fowk.
- 1932 – Amelia Earhart taks aff frae Newfoundland tae begin the warld's first solo nonstap flicht athort the Atlantic Ocean bi a female pilot, laundin in Ireland the next day.
- 1940 – The Holocaust: The first preesoners arrive at a new concentration camp at Auschwitz.
Honoré de Balzac (b. 1799) · Cher (b. 1946) · Iker Casillas (b. 1981)