The temperature on April 12, 1887 was about 11.6 °C. The air pressure was 4 kgf/m2 and came mainly from the south east. The airpressure was 76 cm mercury. The atmospheric humidity was 54%. 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 8 » The Dawes Act authorizes the President of the United States to survey Native American tribal land and divide it into individual allotments.
May 9 » Buffalo Bill Cody's Wild West Show opens in London.
June 23 » The Rocky Mountains Park Act becomes law in Canada creating the nation's first national park, Banff National Park.
July 26 » Publication of the Unua Libro, founding the Esperanto movement.
November 9 » The United States receives rights to Pearl Harbor, Hawaii.
Day of marriage June 9, 1910
The temperature on June 9, 1910 was between 14.4 °C and 24.9 °C and averaged 19.2 °C. There was 2.8 mm of rain. There was 7.0 hours of sunshine (42%). The average windspeed was 2 Bft (weak wind) and was prevailing from the northeast. Source: KNMI
June 17 » Aurel Vlaicu pilots an A. Vlaicu nr. 1 on its first flight.
September 20 » The ocean liner SSFrance, later known as the "Versailles of the Atlantic", is launched.
September 22 » The Duke of York's Picture House opens in Brighton, now the oldest continually operating cinema in Britain.
October 6 » Eleftherios Venizelos is elected prime minister of Greece for the first of seven times.
October 21 » HMSNiobe arrives in Halifax Harbour to become the first ship of the Royal Canadian Navy.
December 21 » An underground explosion at the Hulton Bank Colliery No. 3 Pit in Over Hulton, Westhoughton, England, kills 344 miners.
Day of death September 21, 1966
The temperature on September 21, 1966 was between 4.1 °C and 22.9 °C and averaged 13.1 °C. There was 9.7 hours of sunshine (79%). The almost cloudless was. The average windspeed was 1 Bft (weak wind) and was prevailing from the north-northeast. Source: KNMI
June 2 » Surveyor program: Surveyor 1 lands in Oceanus Procellarum on the Moon, becoming the first U.S. spacecraft to soft-land on another world.
August 22 » Labor movements NFWA and AWOC merge to become the United Farm Workers Organizing Committee (UFWOC), predecessor of the United Farm Workers.
September 8 » The landmark American science fiction television series Star Trek premieres with its first-aired episode, "The Man Trap".
October 15 » The Black Panther Party is created by Huey P. Newton and Bobby Seale.
November 28 » Michel Micombero overthrows the monarchy of Burundi and makes himself the first president.
December 18 » Saturn's moon Epimetheus is discovered by astronomer Richard Walker.
When copying data from this family tree, please include a reference to the origin: R.A.Hemerik, "Descendants Hemerik-Broekhuizen-Huner-Koper-Barink", database, Genealogy Online (https://www.genealogieonline.nl/parenteel-hemerik/I20186.php : accessed January 13, 2026), "Jan ten Donkelaar (1887-1966)".
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