The temperature on August 23, 1873 was about 15.2 °C. There was 6 mm of rain. The air pressure was 1 kgf/m2 and came mainly from the west-southwest. The airpressure was 76 cm mercury. The atmospheric humidity was 94%. Source: KNMI
From July 6, 1872 till August 27, 1874 the Netherlands had a cabinet De Vries - Fransen van de Putte with the prime ministers Mr. G. de Vries Azn. (liberaal) and I.D. Fransen van de Putte (liberaal).
March 1 » E. Remington and Sons in Ilion, New York begins production of the first practical typewriter.
March 22 » The Spanish National Assembly abolishes slavery in Puerto Rico.
May 20 » Levi Strauss and Jacob Davis receive a U.S. patent for blue jeans with copper rivets.
May 23 » The Canadian Parliament establishes the North-West Mounted Police, the forerunner of the Royal Canadian Mounted Police.
June 18 » Susan B. Anthony is fined $100 for attempting to vote in the 1872 presidential election.
July 21 » At Adair, Iowa, Jesse James and the James–Younger Gang pull off the first successful train robbery in the American Old West.
Day of marriage May 11, 1907
The temperature on May 11, 1907 was between 10.7 °C and 26.6 °C and averaged 18.4 °C. There was 12.5 hours of sunshine (81%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southeast. Source: KNMI
In The Netherlands , there was from August 17, 1905 to February 11, 1908 the cabinet De Meester, with Mr. Th. de Meester (unie-liberaal) as prime minister.
February 5 » Belgian chemist Leo Baekeland announces the creation of Bakelite, the world's first synthetic plastic.
March 24 » The first issue of the Georgian Bolshevik newspaper Dro is published.
May 23 » The unicameral Parliament of Finland gathers for its first plenary session.
August 15 » Ordination in Constantinople of Fr. Raphael Morgan, the first African-American Orthodox priest, "Priest-Apostolic" to America and the West Indies.
December 16 » The American Great White Fleet begins its circumnavigation of the world.
December 17 » Ugyen Wangchuck is crowned first King of Bhutan.
Day of death May 15, 1948
The temperature on May 15, 1948 was between 8.1 °C and 22.7 °C and averaged 16.2 °C. There was 14.0 hours of sunshine (89%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the northeast. Source: KNMI
In The Netherlands , there was from July 3, 1946 to August 7, 1948 the cabinet Beel I, with Dr. L.J.M. Beel (KVP) as prime minister.
From August 7, 1948 till March 15, 1951 the Netherlands had a cabinet Drees - Van Schaik with the prime ministers Dr. W. Drees (PvdA) and Mr. J.R.H. van Schaik (KVP).
February 28 » Christiansborg Cross-Roads shooting in the Gold Coast, when a British police officer opens fire on a march of ex-servicemen, killing three of them and sparking major riots and looting in Accra.
May 9 » Czechoslovakia's Ninth-of-May Constitution comes into effect.
June 26 » William Shockley files the original patent for the grown-junction transistor, the first bipolar junction transistor.
July 16 » The storming of the cockpit of the Miss Macao passenger seaplane, operated by a subsidiary of the Cathay Pacific Airways, marks the first aircraft hijacking of a commercial plane.
July 31 » At Idlewild Field in New York, New York International Airport (later renamed John F. Kennedy International Airport) is dedicated.
December 10 » The Human Rights Convention is signed by the United Nations.
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/I55724.php : accessed October 12, 2026), "Ytje Helder (1873-1948)".
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