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.
May 6 » Chief Crazy Horse of the Oglala Lakota surrenders to United States troops in Nebraska.
May 9 » A magnitude 8.8 earthquake off the coast of Peru kills 2,541, including some as far away as Hawaii and Japan.
June 20 » Alexander Graham Bell installs the world's first commercial telephone service in Hamilton, Ontario, Canada.
August 9 » Indian Wars: Battle of the Big Hole: A small band of Nez Percé Indians clash with the United States Army.
December 6 » The first edition of The Washington Post is published.
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 second Peace of Riga is signed between Poland and the Soviet Union.
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 31 » The Royal Australian Air Force is formed.
May 19 » The United States Congress passes the Emergency Quota Act establishing national quotas on immigration.
July 22 » Rif War: The Spanish Army suffers its worst military defeat in modern times to the Berbers of the Rif region of Spanish Morocco.
October 5 » The World Series is the first to be broadcast on radio.
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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