January 30 » The first Anglo-Japanese Alliance is signed in London.
April 20 » Pierre and Marie Curie refine radium chloride.
May 17 » Greek archaeologist Valerios Stais discovers the Antikythera mechanism, an ancient mechanical analog computer.
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.
December 10 » The opening of the reservoir of the Aswan Dam in Egypt.
Day of marriage June 13, 1929
The temperature on June 13, 1929 was between 11.4 °C and 19.1 °C and averaged 16.0 °C. There was 1.6 mm of rain. There was 3.8 hours of sunshine (23%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south-southwest. 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 6 » King Alexander of the Serbs, Croats and Slovenes suspends his country's constitution (the January 6th Dictatorship).
June 1 » The 1st Conference of the Communist Parties of Latin America is held in Buenos Aires.
June 8 » Margaret Bondfield is appointed Minister of Labour. She is the first woman appointed to the Cabinet of the United Kingdom.
June 21 » An agreement brokered by U.S. Ambassador Dwight Whitney Morrow ends the Cristero War in Mexico.
September 24 » Jimmy Doolittle performs the first flight without a window, proving that full instrument flying from take off to landing is possible.
December 19 » The Indian National Congress promulgates the Purna Swaraj (the Declaration of the Independence of India).
Day of death March 12, 1978
The temperature on March 12, 1978 was between 7.8 °C and 13.0 °C and averaged 10.1 °C. There was 6.0 mm of rain during 4.4 hours. The almost completely overcast was. The average windspeed was 2 Bft (weak wind) and was prevailing from the south-southwest. Source: KNMI
In The Netherlands , there was from Monday, December 19, 1977 to Friday, September 11, 1981 the cabinet Van Agt I, with Mr. A.A.M. van Agt (CDA/KVP) as prime minister.
February 17 » The Troubles: The Provisional IRA detonates an incendiary bomb at the La Mon restaurant, near Belfast, killing 12 and seriously injuring 30 others, all Protestants.
March 11 » Coastal Road massacre: At least 37 are killed and more than 70 are wounded when Fatah hijack an Israeli bus, prompting Israel's Operation Litani.
August 22 » The Sandinista National Liberation Front (FLSN) occupies national palace in Nicaragua.
October 21 » Australian civilian pilot Frederick Valentich vanishes over the Bass Strait south of Melbourne, after reporting contact with an unidentified aircraft.
November 17 » The Star Wars Holiday Special airs on CBS, receiving negative reception from critics, fans, and even Star Wars creator George Lucas.
November 18 » In Jonestown, Guyana, Jim Jones led his Peoples Temple to a mass murder–suicide that claimed 918 lives in all, 909 of them in Jonestown itself, including over 270 children. Congressman Leo Ryan is murdered by members of the Peoples Temple hours earlier.
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/I79721.php : accessed October 25, 2026), "Jantje Riemersma (1902-1978)".
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