January 2 » American statesman and diplomat John Hay announces the Open Door Policy to promote trade with China.
January 16 » The United States Senate accepts the Anglo-German treaty of 1899 in which the United Kingdom renounces its claims to the Samoan islands.
February 27 » Second Boer War: In South Africa, British military leaders receive an unconditional notice of surrender from Boer General Piet Cronjé at the Battle of Paardeberg.
March 14 » The Gold Standard Act is ratified, placing the United States currency on the gold standard.
April 5 » Archaeologists in Knossos, Crete, discover a large cache of clay tablets with hieroglyphic writing in a script they call Linear B.
December 14 » Quantum mechanics: Max Planck presents a theoretical derivation of his black-body radiation law.
Day of marriage September 18, 1929
The temperature on September 18, 1929 was between 12.5 °C and 26.3 °C and averaged 18.2 °C. There was 5.4 hours of sunshine (43%). The average windspeed was 2 Bft (weak wind) and was prevailing from the south east. 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.
January 1 » The former municipalities of Point Grey, British Columbia and South Vancouver, British Columbia are amalgamated into Vancouver.
February 26 » President Calvin Coolidge signs an executive order establishing the 96,000 acre Grand Teton National Park in Wyoming.
July 24 » The Kellogg–Briand Pact, renouncing war as an instrument of foreign policy, goes into effect (it is first signed in Paris on August 27, 1928, by most leading world powers).
August 24 » Second day of two-day Hebron massacre during the 1929 Palestine riots: Arab attacks on the Jewish community in Hebron in the British Mandate of Palestine, result in the death of 65–68 Jews; the remaining Jews are forced to flee the city.
October 29 » The New York Stock Exchange crashes in what will be called the Crash of '29 or "Black Tuesday", ending the Great Bull Market of the 1920s and beginning the Great Depression.
December 24 » Assassination attempt on Argentine President Hipólito Yrigoyen.
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