The temperature on June 30, 1886 was about 16.5 °C. The air pressure was 12 kgf/m2 and came mainly from the north-northeast. The airpressure was 77 cm mercury. The atmospheric humidity was 57%. Source: KNMI
In The Netherlands , there was from April 23, 1884 to April 21, 1888 the cabinet Heemskerk, with Mr. J. Heemskerk Azn. (conservatief) as prime minister.
May 4 » Haymarket affair: A bomb is thrown at policemen trying to break up a labor rally in Chicago, United States, killing eight and wounding 60. The police fire into the crowd.
May 8 » Pharmacist John Pemberton first sells a carbonated beverage named "Coca-Cola" as a patent medicine.
June 10 » Mount Tarawera in New Zealand erupts, killing 153 people and burying the famous Pink and White Terraces. Eruptions continue for three months creating a large, 17km long fissure across the mountain peak.
June 13 » A fire devastates much of Vancouver, British Columbia.
July 3 » The New-York Tribune becomes the first newspaper to use a linotype machine, eliminating typesetting by hand.
November 30 » The Folies Bergère stages its first revue.
Day of marriage January 13, 1912
The temperature on January 13, 1912 was between 1.5 °C and 4.5 °C and averaged 3.1 °C. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east-southeast. Source: KNMI
February 29 » The Piedra Movediza (Moving Stone) of Tandil falls and breaks.
March 5 » Italo-Turkish War: Italian forces are the first to use airships for military purposes, employing them for reconnaissance behind Turkish lines.
October 8 » The First Balkan War begins when Montenegro declares war against the Ottoman Empire.
November 7 » The Deutsche Opernhaus (now Deutsche Oper Berlin) opens in the Berlin neighborhood of Charlottenburg, with a production of Beethoven's Fidelio.
November 19 » First Balkan War: The Serbian Army captures Bitola, ending the five-century-long Ottoman rule of Macedonia.
Day of death December 23, 1938
The temperature on December 23, 1938 was between -14.7 °C and -5.9 °C and averaged -10.1 °C. The average windspeed was 2 Bft (weak wind) and was prevailing from the northeast. Source: KNMI
March 12 » Anschluss: German troops occupy and absorb Austria.
May 25 » Spanish Civil War: The bombing of Alicante kills 313 people.
September 12 » Adolf Hitler demands autonomy and self-determination for the Germans of the Sudetenland region of Czechoslovakia.
September 23 » The Czechoslovak army is mobilized in response to the Munich Agreement.
October 31 » Great Depression: In an effort to restore investor confidence, the New York Stock Exchange unveils a fifteen-point program aimed to upgrade protection for the investing public.
November 16 » LSD is first synthesized by Albert Hofmann from ergotamine at the Sandoz Laboratories in Basel.
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/I218265.php : accessed October 14, 2026), "Ibeltje Alkema (1886-1938)".
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