The temperature on April 30, 1881 was about 9.6 °C. There was 1 mm of rain. The air pressure was 2 kgf/m2 and came mainly from the southwest. The airpressure was 76 cm mercury. The atmospheric humidity was 95%. Source: KNMI
In The Netherlands , there was from August 20, 1879 to April 23, 1883 the cabinet Van Lijnden van Sandenburg, with Mr. C.Th. baron Van Lijnden van Sandenburg (conservatief-AR) as prime minister.
February 24 » China and Russia sign the Sino-Russian Ili Treaty.
April 14 » The Four Dead in Five Seconds Gunfight is fought in El Paso, Texas.
May 10 » Carol I is crowned the King of the Romanian Kingdom.
June 14 » The White Rajahs territories become the British protectorate of Sarawak.
June 28 » The Austro–Serbian Alliance of 1881 is secretly signed.
July 1 » The world's first international telephone call is made between St. Stephen, New Brunswick, Canada, and Calais, Maine, United States.
Day of marriage July 7, 1904
The temperature on July 7, 1904 was between 10.5 °C and 22.7 °C and averaged 17.1 °C. There was 8.9 hours of sunshine (54%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west. Source: KNMI
February 8 » Aceh War: Dutch Colonial Army's Marechaussee regiment led by General G.C.E. van Daalen launch military campaign to capture Gayo Highland, Alas Highland, and Batak Highland in Dutch East Indies' Northern Sumatra region, which ends with genocide to Acehnese and Bataks people.
February 9 » Russo-Japanese War: Battle of Port Arthur concludes.
May 9 » The steam locomotive City of Truro becomes the first steam engine in Europe to exceed 100mph (160km/h).
May 21 » The Fédération Internationale de Football Association (FIFA) is founded in Paris.
August 23 » The automobile tire chain is patented.
December 3 » The Jovian moon Himalia is discovered by Charles Dillon Perrine at California's Lick Observatory.
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The Family tree Van Leeuwen publication was prepared by L.H.van Leeuwen (contact is not possible).
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