Chronyas has 96,570 events dated to the 20th century (1901 to 2000 CE), during the Contemporary world. Below are the most notable ones, in date order.
Most of the events in this century belong to Science & technology and Civilizations & archaeology.
Open this century on the timeline
- 1901Discovery of europium
- 1 January 1901Founding of Australia
- 1903Airplane
- 17 December 1903The Wright brothers make the first powered flight
- 1905Special relativity
- 1905Einstein's miracle year
- 1906Discovery of lutetium
- 17 December 1907Founding of Bhutan
- from 28 July 1914 to 11 November 1918World War I
- 1916General relativity
- 1917Discovery of protactinium
- 1922Discovery of hafnium
- 4 November 1922Howard Carter finds the tomb of Tutankhamun
- 1925Discovery of rhenium
- 1931Big Bang theory proposed
- 1932Construction of Dong Hoi Airport
- 1932Construction of Tan Son Nhat International Airport
- 23 September 1932Founding of Saudi Arabia
- from 1933 to 1945The Holocaust
- 1937Discovery of technetium
- 1939Discovery of francium
- from 1 September 1939 to 2 September 1945World War II
- 1940Discovery of neptunium
- 1940Discovery of astatine
- 1941Discovery of plutonium
- 1944Discovery of americium
- 1944Discovery of curium
- 1945Discovery of promethium
- 1945Invention of computer
- 24 October 1945Founding of United Nations
- 16 November 1945Founding of UNESCO
- from 12 March 1947 to 25 December 1991Cold War
- 7 April 1948Founding of World Health Organization
- 10 December 1948Universal Declaration of Human Rights
- 1949Discovery of berkelium
- 4 April 1949Founding of NATO
- 1950Discovery of californium
- 1950Origins of Formula One
- 1952Discovery of einsteinium
- December 1952Discovery of fermium
- 25 April 1953Watson and Crick publish the structure of DNA
- 1955Discovery of mendelevium
- 1958Discovery of nobelium
- 1959HIV/AIDS
- 1960Founding of Somalia
- from 1960 to 1970The Beatles
- 14 February 1961Discovery of lawrencium
- 1962Founding of Jamaica
- 1 October 1963Founding of Nigeria
- 1964Discovery of rutherfordium
- 1966Founding of Lesotho
- 27 February 1967Founding of Saint Kitts and Nevis
- 1 March 1967Founding of Saint Lucia
- 8 August 1967Founding of ASEAN
- 6 September 1968Founding of Eswatini
- 29 October 1969Invention of Internet
- 18 February 1970Discovery of dubnium
- 1971Email
- 1973Mobile phone
- 10 July 1973Founding of The Bahamas
- 1974Founding of Grenada
- July 1974Discovery of seaborgium
- 1975Founding of Papua New Guinea
- 1976Discovery of bohrium
- 1978Founding of Solomon Islands
- 1 October 1978Founding of Tuvalu
- 1979Founding of Saint Vincent and the Grenadines
- c. 1980sInvention of laptop
- 21 September 1981Founding of Belize
- 1 November 1981Founding of Antigua and Barbuda
- 29 August 1982Discovery of meitnerium
- 1984Discovery of hassium
- 20 November 1985Creation of Microsoft Windows
- 1 November 1993Founding of European Union
- 9 November 1994Discovery of darmstadtium
- 8 December 1994Discovery of roentgenium
- 1996Discovery of copernicium
- January 1999Discovery of flerovium
- 9 September 1999Founding of African Union
- July 2000Discovery of livermorium