The temperature on May 9, 1877 was about 16.7 °C. There was 0.1 mm of rain. The air pressure was 3 kgf/m2 and came mainly from the south-southwest. The airpressure was 75 cm mercury. The atmospheric humidity was 64%. 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 18 » An X-ray generating machine is exhibited for the first time by H. L. Smith.
March 1 » Henri Becquerel discovers radioactive decay.
May 18 » The United States Supreme Court rules in Plessy v. Ferguson that the "separate but equal" doctrine is constitutional.
May 27 » The F4-strength St. Louis–East St. Louis tornado hits in St. Louis, Missouri, and East St. Louis, Illinois, killing at least 255 people and causing over $10-million in damage.
September 22 » Queen Victoria surpasses her grandfather King George III as the longest reigning monarch in British history.
December 10 » Alfred Jarry's Ubu Roi premieres in Paris. A riot breaks out at the end of the performance.
When copying data from this family tree, please include a reference to the origin: Peeters Mathieu, "FutureHistory", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-riske/I484.php : accessed December 24, 2025), "Joanna de Clercq (1877-1957)".
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