What happened on December 20

44 documented historical events happened on December 20, from antiquity to the present day. The best known is this: Attempting to form an alliance with the Mongol Empire, Louis IX of France met with two of their envoys while en route to the Seventh Crusade. On the same day, in another year: Led by George Cathcart, British troops defeated Basuto and Taung forces at the Battle of Berea in present-day Lesotho, leading to an offer of peace from King Moshoeshoe I. On Almanaccolo every event is listed in chronological order, grouped by century, and links to the Wikipedia article it comes from, so you can always read further or check the source. Alongside the events you find who was born and who died on this date, and which observances are celebrated around the world.

160 people with a Wikipedia article were born on December 20, including Ferdinand Buisson, Knut Wicksell, Ivana Kobilca. The list spans every era and every field — art, science, politics, sport, entertainment — ordered by year of birth, from the earliest to the most recent. The six featured people are those most has been written about: the ordering uses the length of their Wikipedia article as an indicator of prominence. For each one you find their occupation, year of birth and a link to the full biography.

98 people with a Wikipedia article died on December 20, including AD 69, Alfonso III of Asturias, Peter of Moscow. The list is in chronological order by year of death and spans all of documented history, from antiquity to the present day. For each person you find their occupation, the year and a link to the Wikipedia biography, where the full story and its sources can be read.

12 observances are celebrated on December 20 around the world: Abolition of Slavery Day, also known as Fête des Cafres (Réunion, French Guiana), Bo Aung Kyaw Day (Myanmar), Christian feast day: Dominic of Silos, Christian feast day: Blessed Michał Piaszczyński, Christian feast day: O Clavis, Christian feast day: Philogonius. The list gathers national holidays, international days and religious or civil observances falling on this date in different countries, as recorded on Wikipedia. Some are fixed and recur on the same day every year; others depend on the local calendar. Each links to the article explaining its origin and meaning.