The temperature on December 18, 1887 was about 1.6 °C. There was 6 mm of rain. The air pressure was 15 kgf/m2 and came mainly from the west-southwest. The airpressure was 75 cm mercury. The atmospheric humidity was 98%. 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.
January 20 » The United States Senate allows the Navy to lease Pearl Harbor as a naval base.
February 2 » In Punxsutawney, Pennsylvania the first Groundhog Day is observed.
April 10 » On Easter Sunday, Pope Leo XIII authorizes the establishment of the Catholic University of America.
June 23 » The Rocky Mountains Park Act becomes law in Canada creating the nation's first national park, Banff National Park.
September 5 » A fire at the Theatre Royal, Exeter, kills 186.
November 11 » August Spies, Albert Parsons, Adolph Fischer and George Engel are executed as a result of the Haymarket affair.
Day of marriage May 22, 1915
The temperature on May 22, 1915 was between 13.2 °C and 25.8 °C and averaged 19.4 °C. There was 10.4 hours of sunshine (65%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east-northeast. Source: KNMI
In The Netherlands , there was from August 29, 1913 to September 9, 1918 the cabinet Cort van der Linden, with Mr. P.W.A. Cort van der Linden (liberaal) as prime minister.
January 28 » An act of the U.S. Congress creates the United States Coast Guard as a branch of the United States Armed Forces.
March 27 » Typhoid Mary, the first healthy carrier of disease ever identified in the United States is put in quarantine for the second time, where she would remain for the rest of her life.
May 7 » World War I: German submarine U-20 sinks RMS Lusitania, killing 1,198 people, including 128 Americans. Public reaction to the sinking turns many former pro-Germans in the United States against the German Empire.
June 5 » Denmark amends its constitution to allow women's suffrage.
June 21 » The U.S. Supreme Court hands down its decision in Guinn v. United States 238 US 347 1915, striking down Oklahoma grandfather clause legislation which had the effect of denying the right to vote to blacks.
October 12 » World War I: British nurse Edith Cavell is executed by a German firing squad for helping Allied soldiers escape from Belgium
Day of death July 10, 1941
The temperature on July 10, 1941 was between 15.8 °C and 32.1 °C and averaged 23.5 °C. There was 9.2 mm of rain during 0.6 hours. There was 12.4 hours of sunshine (75%). The average windspeed was 2 Bft (weak wind) and was prevailing from the northwest. Source: KNMI
In The Netherlands , there was from September 3, 1940 to July 27, 1941 the cabinet Gerbrandy I, with Prof. dr. P.S. Gerbrandy (ARP) as prime minister.
In The Netherlands , there was from July 27, 1941 to February 23, 1945 the cabinet Gerbrandy II, with Prof. dr. P.S. Gerbrandy (ARP) as prime minister.
July 6 » The German army launches its offensive to encircle several Soviet armies near Smolensk.
November 7 » World War II: Soviet hospital ship Armenia is sunk by German planes while evacuating refugees and wounded military and staff of several Crimean hospitals. It is estimated that over 5,000 people died in the sinking.
December 8 » World War II: U.S. President Franklin D. Roosevelt declares December 7 to be "a date which will live in infamy", after which the U.S. declares war on Japan.
December 12 » World War II: Fifty-four Japanese A6M Zero fighters raid Batangas Field, Philippines. Jesús Villamor and four Filipino fighter pilots fend them off; César Basa is killed.
December 24 » World War II: Benghazi is conquered by the British Eighth Army.
December 26 » U.S. President Franklin D. Roosevelt signs a bill establishing the fourth Thursday in November as Thanksgiving Day in the United States.
When copying data from this family tree, please include a reference to the origin: Jan Kaper, "Family tree Kaper", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-kaper/I22784.php : accessed February 16, 2026), "Clemendina Helmens (1887-1941)".
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