The temperature on April 18, 1875 was about 16.0 °C. The air pressure was 1 kgf/m2 and came mainly from the north. The airpressure was 76 cm mercury. The atmospheric humidity was 43%. 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).
January 5 » The Palais Garnier, one of the most famous opera houses in the world, is inaugurated in Paris.
February 24 » The SSGothenburg hits the Great Barrier Reef and sinks off the Australian east coast, killing approximately 100, including a number of high-profile civil servants and dignitaries.
March 3 » Georges Bizet's opera Carmen receives its première at the Opéra-Comique in Paris.
May 1 » Alexandra Palace reopens after being burned down in a fire in 1873.
May 17 » Aristides wins the first Kentucky Derby with the jockey Oliver Lewis (2:37.75)
September 27 » The merchant sailing ship Ellen Southard is wrecked in a storm at Liverpool.
Day of marriage May 17, 1900
The temperature on May 17, 1900 was about 13.0 °C. The airpressure was 76 cm mercury. The atmospheric humidity was 62%. Source: KNMI
January 16 » The United States Senate accepts the Anglo-German treaty of 1899 in which the United Kingdom renounces its claims to the Samoan islands.
February 27 » Fußball-Club Bayern München is founded.
June 14 » Hawaii becomes a United States territory.
June 14 » The second German Naval Law calls for the Imperial German Navy to be doubled in size, resulting in an Anglo-German naval arms race.
June 25 » The Taoist monk Wang Yuanlu discovers the Dunhuang manuscripts, a cache of ancient texts that are of great historical and religious significance, in the Mogao Caves of Dunhuang, China.
August 14 » The Eight-Nation Alliance occupies Beijing, China, in a campaign to end the bloody Boxer Rebellion in China.
Day of death May 11, 1936
The temperature on May 11, 1936 was between 9.6 °C and 15.8 °C and averaged 12.3 °C. There was 0.2 mm of rain during 0.6 hours. There was 2.3 hours of sunshine (15%). The average windspeed was 2 Bft (weak wind) and was prevailing from the east-northeast. Source: KNMI
July 11 » The Triborough Bridge in New York City is opened to traffic.
August 19 » The Great Purge of the Soviet Union begins when the first of the Moscow Trials is convened.
August 31 » Radio Prague, now the official international broadcasting station of the Czech Republic, goes on the air.
September 9 » The crews of Portuguese Navy frigate NRPAfonso de Albuquerque and destroyer Dão mutinied against the Salazar dictatorship's support of General Franco's coup and declared their solidarity with the Spanish Republic.
September 10 » First World Individual Motorcycle Speedway Championship, Held at London's (England) Wembley Stadium
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/I167198.php : accessed October 19, 2026), "Clara van der Werff (1875-1936)".
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