The temperature on October 1, 1875 was about 15.1 °C. The air pressure was 3 kgf/m2 and came mainly from the south-southwest. The airpressure was 76 cm mercury. The atmospheric humidity was 79%. Source: KNMI
From August 27, 1874 till November 3, 1877 the Netherlands had a cabinet Heemskerk - Van Lijnden van Sandenburg with the prime ministers Mr. J. Heemskerk Azn. (conservatief) and Mr. C.Th. baron Van Lijnden van Sandenburg (AR).
April 10 » India: Arya Samaj is founded in Mumbai by Swami Dayananda Saraswati to propagate his goal of social reform.
May 17 » Aristides wins the first Kentucky Derby with the jockey Oliver Lewis (2:37.75)
May 20 » Signing of the Metre Convention by 17 nations leading to the establishment of the International System of Units.
June 19 » The Herzegovinian rebellion against the Ottoman Empire begins.
July 9 » The Herzegovina Uprising against Ottoman rule begins, which would last until 1878 and have far-reaching implications throughout the Balkans.
September 3 » The first official game of polo is played in Argentina after being introduced by British ranchers.
Day of marriage April 19, 1906
The temperature on April 19, 1906 was between 4.9 °C and 9.0 °C and averaged 7.0 °C. There was 1.3 mm of rain. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the north. 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.
April 27 » The State Duma of the Russian Empire meets for the first time.
May 22 » The Wright brothers are granted U.S. patent number 821,393 for their "Flying-Machine".
June 30 » The United States Congress passes the Meat Inspection Act and Pure Food and Drug Act.
September 20 » The Cunard Line's RMSMauretania is launched at Newcastle upon Tyne, England.
November 9 » Theodore Roosevelt is the first sitting President of the United States to make an official trip outside the country. He did so to inspect progress on the Panama Canal.
November 24 » A 13–6 victory by the Massillon Tigers over their rivals, the Canton Bulldogs, for the "Ohio League" Championship, leads to accusations that the championship series was fixed and results in the first major scandal in professional American football.
Day of death February 13, 1961
The temperature on February 13, 1961 was between 7.1 °C and 8.8 °C and averaged 8.1 °C. The almost completely overcast was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
January 25 » In Washington, D.C., President John F. Kennedy delivers the first live presidential television news conference.
January 31 » Project Mercury: Mercury-Redstone 2: Ham the Chimp travels into outer space.
April 16 » In a nationally broadcast speech, Cuban leader Fidel Castro declares that he is a Marxist–Leninist and that Cuba is going to adopt Communism.
May 24 » American civil rights movement: Freedom Riders are arrested in Jackson, Mississippi, for "disturbing the peace" after disembarking from their bus.
July 21 » Mercury program: Mercury-Redstone 4 Mission: Gus Grissom piloting Liberty Bell 7 becomes the second American to go into space (in a suborbital mission).
September 18 » U.N. Secretary-General Dag Hammarskjöld dies in an air crash while attempting to negotiate peace in the Katanga region of the Democratic Republic of the Congo.
When copying data from this family tree, please include a reference to the origin: Elly Gelderman, "Family tree Gelderman", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-gelderman/I3919.php : accessed March 16, 2026), "Willem Jan Post (1875-1961)".
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