The temperature on May 1, 1887 was about 10.5 °C. The air pressure was 12 kgf/m2 and came mainly from the northeast. The airpressure was 76 cm mercury. The atmospheric humidity was 48%. 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.
April 10 » On Easter Sunday, Pope Leo XIII authorizes the establishment of the Catholic University of America.
June 8 » Herman Hollerith applies for US patent #395,781 for the 'Art of Compiling Statistics', which was his punched card calculator.
June 18 » The Reinsurance Treaty between Germany and Russia is signed.
July 4 » The founder of Pakistan, Quaid-i-Azam Muhammad Ali Jinnah, joins Sindh-Madrasa-tul-Islam, Karachi.
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 23, 1910
The temperature on May 23, 1910 was between 10.8 °C and 23.7 °C and averaged 17.6 °C. There was 12.0 hours of sunshine (75%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the northeast. Source: KNMI
April 28 » Frenchman Louis Paulhan wins the 1910 London to Manchester air race, the first long-distance aeroplane race in England.
June 19 » The first Father's Day is celebrated in Spokane, Washington.
July 15 » In his book Clinical Psychiatry, Emil Kraepelin gives a name to Alzheimer's disease, naming it after his colleague Alois Alzheimer.
August 22 » Korea is annexed by Japan with the signing of the Japan–Korea Treaty of 1910, beginning a period of Japanese rule of Korea that lasted until the end of World War II.
September 20 » The ocean liner SSFrance, later known as the "Versailles of the Atlantic", is launched.
September 26 » Indian journalist Swadeshabhimani Ramakrishna Pillai is arrested after publishing criticism of the government of Travancore and is exiled.
When copying data from this family tree, please include a reference to the origin: Peeters Mathieu, "FutureHistory", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-riske/I28075.php : accessed August 28, 2026), "Helena Charlotta Augusta van Heck (1887-????)".
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