The temperature on September 19, 1887 was about 14.5 °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 76%. 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.
April 10 » On Easter Sunday, Pope Leo XIII authorizes the establishment of the Catholic University of America.
June 18 » The Reinsurance Treaty between Germany and Russia is signed.
July 26 » Publication of the Unua Libro, founding the Esperanto movement.
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 November 21, 1912
The temperature on November 21, 1912 was between 2.5 °C and 9.8 °C and averaged 5.5 °C. There was 1.2 mm of rain. There was 3.8 hours of sunshine (45%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northwest. Source: KNMI
February 12 » The Xuantong Emperor, the last Emperor of China, abdicates.
February 25 » Marie-Adélaïde, the eldest of six daughters of Guillaume IV, becomes the first reigning Grand Duchess of Luxembourg.
May 4 » Italy occupies the Greek island of Rhodes.
June 8 » Carl Laemmle incorporates Universal Pictures.
September 25 » Columbia University Graduate School of Journalism is founded in New York City.
November 5 » Woodrow Wilson is elected the 28th President of the United States, defeating incumbent William Howard Taft.
Day of death May 6, 1959
The temperature on May 6, 1959 was between 2.8 °C and 16.6 °C and averaged 10.3 °C. There was 13.5 hours of sunshine (89%). The almost cloudless was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northeast. Source: KNMI
January 30 » The forces of the Sultanate of Muscat occupy the last strongholds of the Imamate of Oman, Saiq and Shuraijah, marking the end of Jebel Akhdar War in Oman.
February 16 » Fidel Castro becomes Premier of Cuba after dictator Fulgencio Batista was overthrown on January 1.
February 28 » Discoverer 1, an American spy satellite that is the first object intended to achieve a polar orbit, is launched but fails to achieve orbit.
May 4 » The 1st Annual Grammy Awards are held.
May 19 » The North Vietnamese Army establishes Group 559, whose responsibility is to determine how to maintain supply lines to South Vietnam; the resulting route is the Ho Chi Minh trail.
September 12 » The Soviet Union launches a large rocket, Lunik II, at the moon.
When copying data from this family tree, please include a reference to the origin: Joop Klavers, "Family tree Klavers", database, Genealogy Online (https://www.genealogieonline.nl/stamboom_klavers/I259335.php : accessed February 7, 2026), "Jan Dirk Jongsma (1887-1959)".
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