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
30 famous birthdays on May 20
Including Frédéric Passy, Anton Zeilinger, Edward B. Lewis
View Birthdays
Event Distribution by Century
Darker = Higher Density18th C.21st C.
18th Century
2 events19th Century
6 events20th Century
12 events21st Century
2 eventsExplore More for May 20
Discover births, deaths, and deeper historical trends for this date.