January 17 » El Yunque National Forest in Puerto Rico becomes part of the United States National Forest System as the Luquillo Forest Reserve.
April 26 » Atlético Madrid Association football club is founded
May 29 » In the May Coup, Alexander I, King of Serbia, and Queen Draga, are assassinated in Belgrade by the Black Hand (Crna Ruka) organization.
June 16 » The Ford Motor Company is incorporated.
July 4 » The Philippine–American War is officially concluded.
December 30 » A fire at the Iroquois Theater in Chicago, Illinois kills at least 605.
Day of marriage August 20, 1931
The temperature on August 20, 1931 was between 12.5 °C and 20.1 °C and averaged 15.7 °C. There was 10.1 hours of sunshine (70%). The average windspeed was 5 Bft (very strong wind) and was prevailing from the south-southwest. Source: KNMI
In The Netherlands , there was from August 10, 1929 to May 26, 1933 the cabinet Ruys de Beerenbrouck III, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
March 26 » Ho Chi Minh Communist Youth Union is founded in Vietnam.
March 26 » Swissair is founded as the national airline of Switzerland.
June 23 » Wiley Post and Harold Gatty take off from Roosevelt Field, Long Island in an attempt to circumnavigate the world in a single-engine plane.
November 7 » The Chinese Soviet Republic is proclaimed on the anniversary of the October Revolution.
December 11 » Statute of Westminster 1931: The British Parliament establishes legislative equality between the UK and the Dominions of the Commonwealth—Australia, Canada, Newfoundland, New Zealand, South Africa, and Ireland.
Day of death July 26, 1974
The temperature on July 26, 1974 was between 9.0 °C and 17.2 °C and averaged 14.4 °C. There was 4.6 mm of rain during 3.2 hours. There was 0.1 hours of sunshine (1%). The heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
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 1 » A fire in the 25-story Joelma Building in São Paulo, Brazil kills 189 and injures 293.
March 1 » Watergate scandal: Seven are indicted for their role in the Watergate break-in and charged with conspiracy to obstruct justice.
May 15 » Ma'alot massacre: Members of the Democratic Front for the Liberation of Palestine attack and take hostages at an Israeli school; a total of 31 people are killed, including 22 schoolchildren.
August 9 » As a direct result of the Watergate scandal, Richard Nixon becomes the first President of the United States to resign from office. His Vice President, Gerald Ford, becomes president.
September 1 » The SR-71 Blackbird sets (and holds) the record for flying from New York to London in the time of 1 hour, 54 minutes and 56.4 seconds at a speed of 1,435.587 miles per hour (2,310.353km/h).
December 19 » Nelson Rockefeller is sworn in as Vice President of the United States under President Gerald Ford under the provisions of the 25th Amendment to the United States Constitution.
When copying data from this family tree, please include a reference to the origin: Nico de Kunder, "Family tree De Kunder", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-de-kunder/I3397.php : accessed March 12, 2026), "Adriaan Leendert Moerman (1903-1974)".
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