January 31 » Czechoslav Trade Union Association is founded in Prague.
April 30 » J. J. Thomson of the Cavendish Laboratory announces his discovery of the electron as a subatomic particle, over 1,800 times smaller than a proton (in the atomic nucleus), at a lecture at the Royal Institution in London.
July 2 » British-Italian engineer Guglielmo Marconi obtains a patent for radio in London.
August 2 » Anglo-Afghan War: The Siege of Malakand ends when a relief column is able to reach the British garrison in the Malakand states.
September 10 » Lattimer massacre: A sheriff's posse kills 19 unarmed striking immigrant miners in Lattimer, Pennsylvania, United States.
December 30 » The British Colony of Natal annexes Zululand.
Day of marriage May 11, 1922
The temperature on May 11, 1922 was between 0.7 °C and 11.8 °C and averaged 6.5 °C. There was 3.4 hours of sunshine (22%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northwest. Source: KNMI
In The Netherlands , there was from September 9, 1918 to September 18, 1922 the cabinet Ruys de Beerenbrouck I, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
In The Netherlands , there was from September 19, 1922 to August 4, 1925 the cabinet Ruys de Beerenbrouck II, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
February 27 » A challenge to the Nineteenth Amendment to the United States Constitution, allowing women the right to vote, is rebuffed by the Supreme Court of the United States in Leser v. Garnett.
March 10 » Mahatma Gandhi is arrested in India, tried for sedition, and sentenced to six years in prison, only to be released after nearly two years for an appendicitis operation.
March 15 » After Egypt gains nominal independence from the United Kingdom, Fuad I becomes King of Egypt.
April 7 » The United States Secretary of the Interior leases federal petroleum reserves to private oil companies on excessively generous terms.
June 17 » Portuguese naval aviators Gago Coutinho and Sacadura Cabral complete the first aerial crossing of the South Atlantic.
November 26 » Howard Carter and Lord Carnarvon become the first people to enter the tomb of Pharaoh Tutankhamun in over 3000 years.
Day of death August 1, 1973
The temperature on August 1, 1973 was between 11.9 °C and 26.7 °C and averaged 19.7 °C. There was 0.1 mm of rain during 0.1 hours. There was 6.8 hours of sunshine (44%). The partly clouded was. The average windspeed was 1 Bft (weak wind) and was prevailing from the east. Source: KNMI
In The Netherlands , there was from Thursday, July 20, 1972 to Friday, May 11, 1973 the cabinet Biesheuvel II, with Mr. B.W. Biesheuvel (ARP) as prime minister.
In The Netherlands , there was from Friday, May 11, 1973 to Monday, December 19, 1977 the cabinet Den Uyl, with Drs. J.M. den Uyl (PvdA) as prime minister.
February 27 » The American Indian Movement occupies Wounded Knee in protest of the federal government.
May 11 » Citing government misconduct, Daniel Ellsberg's charges for his involvement in releasing the Pentagon Papers to The New York Times are dismissed.
August 22 » The Congress of Chile votes in favour of a resolution condemning President Salvador Allende's government and demands that he resign or else be unseated through force and new elections.
September 20 » Billie Jean King beats Bobby Riggs in the Battle of the Sexes tennis match at the Houston Astrodome.
October 8 » Yom Kippur War: Israel loses more than 150 tanks in a failed attack on Egyptian-occupied positions.
November 7 » The United States Congress overrides President Richard M. Nixon's veto of the War Powers Resolution, which limits presidential power to wage war without congressional approval.
When copying data from this family tree, please include a reference to the origin: Dirk Ham, "Family tree Ham en Dallinga", database, Genealogy Online (https://www.genealogieonline.nl/ham-stamboom/I2682.php : accessed February 3, 2026), "Evert Vaartjes (1897-1973)".
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