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.
February 20 » Tchaikovsky's ballet Swan Lake receives its premiere at the Bolshoi Theatre in Moscow.
April 24 » Russo-Turkish War: Russian Empire declares war on Ottoman Empire.
May 5 » American Indian Wars: Sitting Bull leads his band of Lakota into Canada to avoid harassment by the United States Army under Colonel Nelson Miles.
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 20 » Alexander Graham Bell installs the world's first commercial telephone service in Hamilton, Ontario, Canada.
November 21 » Thomas Edison announces his invention of the phonograph, a machine that can record and play sound.
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.
February 21 » Constituent Assembly of the Democratic Republic of Georgia adopts the country's first constitution.
February 25 » Georgian capital Tbilisi falls to the invading Russian forces after heavy fighting and the Russians declare the Georgian Soviet Socialist Republic.
March 8 » Spanish Prime Minister Eduardo Dato Iradier is assassinated while exiting the parliament building in Madrid.
March 18 » The Kronstadt rebellion is suppressed by the Red Army.
July 11 » A truce in the Irish War of Independence comes into effect.
October 8 » KDKA in Pittsburgh's Forbes Field conducts the first live broadcast of a football game.
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 3, 2026), "Roelof Poelstra (1877-1921)".
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