The temperature on January 21, 1877 was about 6.9 °C. The air pressure was 1 kgf/m2 and came mainly from the northwest. The airpressure was 78 cm mercury. The atmospheric humidity was 84%. 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).
In The Netherlands , there was from November 3, 1877 to August 20, 1879 the cabinet Kappeijne van de Coppello, with Mr. J. Kappeijne van de Coppello (liberaal) as prime minister.
January 20 » The last day of the Constantinople Conference results in agreement for political reforms in the Balkans.
March 2 » Just two days before inauguration, the U.S. Congress declares Rutherford B. Hayes the winner of the 1876 U.S. presidential election even though Samuel J. Tilden had won the popular vote.
May 6 » Chief Crazy Horse of the Oglala Lakota surrenders to United States troops in Nebraska.
May 9 » Mihail Kogălniceanu reads, in the Chamber of Deputies, the Declaration of Independence of Romania. This day became the Independence Day of Romania.
June 15 » Henry Ossian Flipper becomes the first African American cadet to graduate from the United States Military Academy.
July 21 » After rioting by Baltimore and Ohio Railroad workers and the deaths of nine rail workers at the hands of the Maryland militia, workers in Pittsburgh, Pennsylvania, stage a sympathy strike that is met with an assault by the state militia.
Day of death February 9, 1921
The temperature on February 9, 1921 was between -0.5 °C and 3.3 °C and averaged 1.4 °C. There was 0.9 mm of rain. The average windspeed was 2 Bft (weak wind) and was prevailing from the north. Source: KNMI
In The Netherlands , there was from September 9, 1918 to September 18, 1922 the cabinet Ruys de Beerenbrouck I, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
March 18 » The Kronstadt rebellion is suppressed by the Red Army.
March 19 » Irish War of Independence: One of the biggest engagements of the war takes place at Crossbarry, County Cork. About 100 Irish Republican Army (IRA) volunteers escape an attempt by over 1,300 British forces to encircle them.
March 21 » The New Economic Policy is implemented by the Bolshevik Party in response to the economic failure as a result of war communism.
March 24 » The 1921 Women's Olympiad begins in Monte Carlo, first international women's sports event.
July 23 » The Communist Party of China (CPC) is established at the founding National Congress.
August 28 » The Red Army dissolved the Free Territory, after driving the Black Army out of Ukraine.
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/I51696.php : accessed October 8, 2026), "Roelof Poelstra (1877-1921)".
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