January 17 » El Yunque National Forest in Puerto Rico becomes part of the United States National Forest System as the Luquillo Forest Reserve.
February 11 » Anton Bruckner's 9th Symphony receives its first performance in Vienna, Austria.
June 11 » A group of Serbian officers stormed the royal palace and assassinated King Alexander Obrenović and his wife, Queen Draga.
August 29 » The Slava, the last of the five Borodino-class battleships, is launched.
November 18 » The Hay–Bunau-Varilla Treaty is signed by the United States and Panama, giving the United States exclusive rights over the Panama Canal Zone.
December 30 » A fire at the Iroquois Theater in Chicago, Illinois kills at least 605.
Day of marriage October 30, 1929
The temperature on October 30, 1929 was between 7.3 °C and 12.0 °C and averaged 9.3 °C. There was 7.9 mm of rain. There was 0.1 hours of sunshine (1%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northwest. Source: KNMI
In The Netherlands , there was from March 8, 1926 to August 10, 1929 the cabinet De Geer I, with Jonkheer mr. D.J. de Geer (CHU) as prime minister.
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 11 » Kingdom of Italy and the Vatican sign the Lateran Treaty.
February 26 » President Calvin Coolidge signs an executive order establishing the 96,000 acre Grand Teton National Park in Wyoming.
April 6 » Huey P. Long, Governor of Louisiana, is impeached by the Louisiana House of Representatives.
May 15 » A fire at the Cleveland Clinic in Cleveland, Ohio kills 123.
August 11 » Babe Ruth becomes the first baseball player to hit 500 home runs in his career with a home run at League Park in Cleveland, Ohio.
November 3 » The Gwangju Student Independence Movement occurred.
Day of death October 23, 1973
The temperature on October 23, 1973 was between 4.6 °C and 12.6 °C and averaged 8.7 °C. There was 2.4 mm of rain during 1.1 hours. There was 3.6 hours of sunshine (35%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the northwest. 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.
January 8 » Soviet space mission Luna 21 is launched.
October 6 » Egypt and Syria launch coordinated attacks against Israel, beginning the Yom Kippur War.
October 16 » Henry Kissinger and Lê Đức Thọ are awarded the Nobel Peace Prize.
October 20 » The Sydney Opera House is opened by Elizabeth II after 14 years of construction.
November 14 » The Athens Polytechnic uprising, a massive demonstration of popular rejection of the Greek military junta of 1967–74, begins.
November 16 » U.S. President Richard Nixon signs the Trans-Alaska Pipeline Authorization Act into law, authorizing the construction of the Alaska Pipeline.
When copying data from this family tree, please include a reference to the origin: Ferry Posthuma Scholtes, "Family tree Posthuma", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-posthuma/R9.php : accessed September 24, 2026), "Willem Posthuma (1903-1973)".
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