February 14 » Voting machines are approved by the U.S. Congress for use in federal elections.
March 4 » Cyclone Mahina sweeps in north of Cooktown, Queensland, with a 12 metres (39ft) wave that reaches up to 5 kilometres (3.1mi) inland, killing over 300.
March 30 » German Society of Chemistry issues an invitation to other national scientific organizations to appoint delegates to the International Committee on Atomic Weights.
July 29 » The First Hague Convention is signed.
September 13 » Mackinder, Ollier and Brocherel make the first ascent of Batian (5,199 m - 17,058ft), the highest peak of Mount Kenya.
Day of marriage May 24, 1923
The temperature on May 24, 1923 was between 1.9 °C and 14.8 °C and averaged 8.5 °C. There was 8.9 hours of sunshine (55%). The average windspeed was 2 Bft (weak wind) and was prevailing from the north. 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.
September 8 » Honda Point disaster: Nine US Navy destroyers run aground off the California coast. Seven are lost, and twenty-three sailors killed.
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.
October 29 » Turkey becomes a republic following the dissolution of the Ottoman Empire.
October 31 » The first of 160 consecutive days of 100° Fahrenheit at Marble Bar, Western Australia.
November 9 » In Munich, Germany, police and government troops crush the Beer Hall Putsch in Bavaria. The failed coup is the work of the Nazis.
Day of death March 15, 1976
The temperature on March 15, 1976 was between 0.9 °C and 8.4 °C and averaged 4.0 °C. There was 0.7 mm of rain during 1.0 hours. There was 0.4 hours of sunshine (3%). The heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the east. Source: KNMI
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 1 » A bomb explodes on board Middle East Airlines Flight 438 over Qaisumah, Saudi Arabia, killing all 81 people on board.
February 4 » In Guatemala and Honduras an earthquake kills more than 22,000.
July 19 » Sagarmatha National Park in Nepal is created.
July 28 » The Tangshan earthquake measuring between 7.8 and 8.2 moment magnitude flattens Tangshan in the People's Republic of China, killing 242,769 and injuring 164,851.
August 18 » In the Korean Demilitarized Zone at Panmunjom, the Axe murder incident results in the death of two US soldiers.
September 3 » Viking program: The American Viking 2 spacecraft lands at Utopia Planitia on Mars.
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/I166809.php : accessed September 24, 2026), "Jan Jansma (1899-1976)".
Copy warning
Genealogical publications are copyright protected. Although data is often retrieved from public archives, the searching, interpreting, collecting, selecting and sorting of the data results in a unique product. Copyright protected work may not simply be copied or republished.
Please stick to the following rules
Request permission to copy data or at least inform the author, chances are that the author gives permission, often the contact also leads to more exchange of data.
Do not use this data until you have checked it, preferably at the source (the archives).
State from whom you have copied the data and ideally also his/her original source.