Historical Events on May 20

22 significant historical events occurred on May 20. May 20 has seen several notable historical events. On this date, the Metre Convention was signed in 1875, setting international measurement standards. The Triple Alliance between Germany, Austria-Hungary, and Italy was formed in 1882. In 1942, the Demyansk Pocket military operation concluded. Additionally, May 20 has been a day for hosting Formula One Grand Prix races in both the Netherlands and Belgium.

Total Events

22

Time Span

1778–2024

Categories

3

Top Category

general

9 events

26 famous birthdays on May 20

Including Edward B. Lewis, Anton Zeilinger, Frédéric Passy

Event Distribution by Century

Darker = Higher Density

18th C.21st C.

18th Century

2 events

war

1778 minor battle of the American Revolutionary War

politics

Popular revolt in Paris on 20 May 1795 against the policies of the Thermidorian Convention

19th Century

6 events

war

1811 naval battle fought off Tamatave in Madagascar between British and French frigate squadrons during the Napoleonic Wars

politics

1815 treaty between Naples and Austria

war

1815 conflict of the Napoleonic Wars

war

1862 Union capture of Tucson during the American Civil War

politics

Metre Convention — 1875 international treaty

general

Triple Alliance — defensive alliance between Germany, Austria–Hungary and Italy (1882-1915)

20th Century

12 events

war

Strategic battle of Operation Merkur

war

World War II battle on Crete in 1941

war

1941 World War II battle in Crete

war

Military operation from 8 February – 20 May 1942

general

1962 Dutch Grand Prix — Formula One motor race held in 1962

general

1971 massacre by the Pakistan Army

general

1971 massacre during the Bangladesh War of Independence

general

1973 Belgian Grand Prix — Formula One race

politics

1975 Mauritian student protests

general

1984 French Grand Prix — Formula One motor race held in 1984

general

1992 European Cup Final — association football match

general

Organized genocide against Bengali Hindus

21st Century

2 events

general

Foiled terrorism plot

politics

2024 Dream Star Fighting Marigold event

Explore More for May 20

Discover births, deaths, and deeper historical trends for this date.

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