January 2 » American statesman and diplomat John Hay announces the Open Door Policy to promote trade with China.
February 7 » A Chinese immigrant in San Francisco falls ill to bubonic plague in the first plague epidemic in the continental United States.
March 18 » AFC Ajax Amsterdam, The Netherlands's biggest and most successful football club, was founded.
May 29 » N'Djamena is founded as Fort-Lamy by the French commander Émile Gentil.
June 18 » Empress Dowager Cixi of China orders all foreigners killed, including foreign diplomats and their families.
July 9 » The Governor of Shanxi province in North China orders the execution of 45 foreign Christian missionaries and local church members, including children.
Day of marriage May 30, 1923
The temperature on May 30, 1923 was between 6.5 °C and 16.6 °C and averaged 11.7 °C. There was 3.4 mm of rain. There was 0.9 hours of sunshine (6%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northeast. Source: KNMI
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 15 » Greece becomes the last European country to adopt the Gregorian calendar.
June 18 » Checker Taxi puts its first taxi on the streets.
August 16 » The United Kingdom gives the name "Ross Dependency" to part of its claimed Antarctic territory and makes the Governor-General of the Dominion of New Zealand its administrator.
September 1 » The Great Kantō earthquake devastates Tokyo and Yokohama, killing about 105,000 people.
September 29 » The French Mandate for Syria and the Lebanon takes effect.
October 15 » The German Rentenmark is introduced in Germany to counter hyperinflation in the Weimar Republic.
Day of death December 21, 1964
The temperature on December 21, 1964 was between -1.7 and 1.5 °C. There was 0.5 hours of sunshine (6%). The partly or heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the northeast. Source: KNMI
February 17 » In Wesberry v. Sanders the Supreme Court of the United States rules that congressional districts have to be approximately equal in population.
May 20 » Discovery of the cosmic microwave background radiation by Robert Woodrow Wilson and Arno Penzias.
June 1 » Kenya becomes a republic with Jomo Kenyatta (1897 – 22 August 1978) as its first President (1964 to 1978).
June 10 » United States Senate breaks a 75-day filibuster against the Civil Rights Act of 1964, leading to the bill's passage.
July 31 » Ranger program: Ranger 7 sends back the first close-up photographs of the moon, with images 1,000 times clearer than anything ever seen from earth-bound telescopes.
October 1 » Japanese Shinkansen ("bullet trains") begin high-speed rail service from Tokyo to Osaka.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I80861.php : accessed December 28, 2025), "Hillebrand Brandsma (1900-1964)".
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