22 October as never before or since.

1721 Peter the Great became emperor of all the Russians, and a quite few others. I once found this statue referred to as depicting Catherine the Great in a book by two journalists. Thus was confirmed many of my suspicious of the fourth estate. Seen it with my own eyes.
Peter Great horse.jpg
1884 Twenty-six countries adopted Greenwich Mean Time as longitude zero, with 24 time zones, at conference in Washington D.C. Greenwich was the focal point of a great many nautical charts and maps and was chosen because of that.
G M T map.png
1938 Chester Carlson (1906-1968) invented the photocopier in the family kitchen. He tried to sell the machine to IBM, RCA, Kodak and others, but they see no use for a gadget that makes nothing but copies. He called it xerography meaning literally dry writing as distinct from the wet process of mimeograph. He made several fortunes out of it and gave most of it away, including a good deal to the United Nations. Below is the first exposure he made.
xerographic first image.jpg
1975 USAF gave Sergeant John Matlovich a General Discharge because he had publicly declared his homosexuality. This charge denied Matlovich pension and health entitlements. A court later found for Matlovich. The medals were for killing, and the GD was for loving, he said.
Matlovich_time.jpg
1978 Pope John II was inaugurated. Polish born, he held on until 2005. He galvanised the papacy like few others and became a world leader in more than name.
Pope John Paul II.jpg