1612 – Galileo Galilei becomes the first astronomer to observe the planet Neptune (he mistakenly catalogued it as a fixed star)

1918 – Constance Markievicz while detained in Holloway prison, became the first woman to be elected MP to the British House of Commons.

1972 – Kim Il-sung, already Prime Minister of North Korea and General Secretary of the Workers’ Party of Korea, became the first President of North Korea.