The temperature on April 13, 1887 was about 4.1 °C. The air pressure was 10 kgf/m2 and came mainly from the north-northwest. The airpressure was 76 cm mercury. The atmospheric humidity was 85%. 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 9 » Buffalo Bill Cody's Wild West Show opens in London.
June 18 » The Reinsurance Treaty between Germany and Russia is signed.
September 5 » A fire at the Theatre Royal, Exeter, kills 186.
October 1 » Balochistan is conquered by the British Empire.
November 9 » The United States receives rights to Pearl Harbor, Hawaii.
November 11 » August Spies, Albert Parsons, Adolph Fischer and George Engel are executed as a result of the Haymarket affair.
Day of marriage May 25, 1912
The temperature on May 25, 1912 was between 5.6 °C and 13.8 °C and averaged 10.1 °C. There was 3.0 hours of sunshine (19%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the north-northwest. Source: KNMI
August 14 » U.S. Marines invade Nicaragua to support the U.S.-backed government installed there after José Santos Zelaya had resigned three years earlier.
September 25 » Columbia University Graduate School of Journalism is founded in New York City.
September 28 » The Ulster Covenant is signed by some 500,000 Ulster Protestant Unionists in opposition to the Third Irish Home Rule Bill.
October 18 » First Balkan War: King Peter I of Serbia issues a declaration "To the Serbian People", as his country joins the war.
October 26 » First Balkan War: The Ottomans lose the cities of Thessaloniki and Skopje.
November 5 » Woodrow Wilson is elected the 28th President of the United States, defeating incumbent William Howard Taft.
When copying data from this family tree, please include a reference to the origin: J.M. Jans, "Family tree Jans", database, Genealogy Online (https://www.genealogieonline.nl/stamboom_jans/I280.php : accessed January 23, 2026), "Jannigje OPMEER (1887-????)".
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