January 30 » The first Anglo-Japanese Alliance is signed in London.
February 27 » Second Boer War: Australian soldiers Harry "Breaker" Morant and Peter Handcock are executed in Pretoria after being convicted of war crimes.
April 18 » The 7.5 Mw Guatemala earthquake shakes Guatemala with a maximum Mercalli intensity of VIII (Severe), killing between 800–2,000.
June 28 » The U.S. Congress passes the Spooner Act, authorizing President Theodore Roosevelt to acquire rights from Colombia for the Panama Canal.
July 17 » Willis Carrier creates the first air conditioner in Buffalo, New York.
August 22 » Theodore Roosevelt becomes the first President of the United States to make a public appearance in an automobile.
Day of marriage May 23, 1930
The temperature on May 23, 1930 was between 8.8 °C and 19.8 °C and averaged 14.1 °C. There was 12.9 hours of sunshine (80%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the north-northeast. 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.
February 18 » While studying photographs taken in January, Clyde Tombaugh discovers Pluto.
March 31 » The Motion Picture Production Code is instituted, imposing strict guidelines on the treatment of sex, crime, religion and violence in film, in the U.S., for the next thirty-eight years.
October 5 » British airship R101 crashes in France en route to India on its maiden voyage.
November 3 » Getúlio Vargas becomes Head of the Provisional Government in Brazil after a bloodless coup on October 24.
November 11 » Patent number US1781541 is awarded to Albert Einstein and Leó Szilárd for their invention, the Einstein refrigerator.
December 7 » W1XAV in Boston, Massachusetts telecasts video from the CBS radio orchestra program, The Fox Trappers. The telecast also includes the first television commercial in the United States, an advertisement for I.J. Fox Furriers, who sponsored the radio show.
Day of death July 25, 1994
The temperature on July 25, 1994 was between 18.7 °C and 29.0 °C and averaged 23.6 °C. There was 0.8 mm of rain during 1.3 hours. There was 7.1 hours of sunshine (45%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the southwest. Source: KNMI
In The Netherlands , there was from Tuesday, November 7, 1989 to Monday, August 22, 1994 the cabinet Lubbers III, with Drs. R.F.M. Lubbers (CDA) as prime minister.
In The Netherlands , there was from Monday, August 22, 1994 to Monday, August 3, 1998 the cabinet a href="https://nl.wikipedia.org/wiki/Kabinet-Kok_I" class="extern">Kok I, with W. Kok (PvdA) as prime minister.
March 21 » The United Nations Framework Convention on Climate Change enters into force.
April 14 » In a U.S. friendly fire incident during Operation Provide Comfort in northern Iraq, two United States Air Force aircraft mistakenly shoot-down two United States Army helicopters, killing 26 people.
April 27 » South African general election: The first democratic general election in South Africa, in which black citizens could vote. The Interim Constitution comes into force.
May 18 » Israeli troops finish withdrawing from the Gaza Strip, ceding the area to the Palestinian National Authority to govern.
June 1 » Republic of South Africa becomes a Commonwealth republic.
September 3 » Sino-Soviet split: Russia and the People's Republic of China agree to de-target their nuclear weapons against each other.
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/I166749.php : accessed October 20, 2026), "Jannes de Boer (1902-1994)".
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