The temperature on July 1, 1887 was about 19.7 °C. The air pressure was 16 kgf/m2 and came mainly from the north-northeast. The airpressure was 77 cm mercury. The atmospheric humidity was 66%. 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 4 » Argonia, Kansas elects Susanna M. Salter as the first female mayor in the United States.
May 9 » Buffalo Bill Cody's Wild West Show opens in London.
June 8 » Herman Hollerith applies for US patent #395,781 for the 'Art of Compiling Statistics', which was his punched card calculator.
July 26 » Publication of the Unua Libro, founding the Esperanto movement.
October 1 » Balochistan is conquered by the British Empire.
Day of death August 30, 1964
The temperature on August 30, 1964 was between 5.7 °C and 17.6 °C and averaged 11.9 °C. There was 0.4 mm of rain during 0.5 hours. There was 6.6 hours of sunshine (48%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the northwest. Source: KNMI
January 8 » President Lyndon B. Johnson declares a "War on Poverty" in the United States.
March 6 » Constantine II becomes King of Greece.
August 1 » The former Belgian Congo is renamed the Democratic Republic of the Congo.
August 4 » Civil rights movement: Civil rights workers Michael Schwerner, Andrew Goodman and James Chaney are found dead in Mississippi after disappearing on June 21.
August 13 » Peter Allen and Gwynne Evans are hanged for the murder of John Alan West becoming the last people executed in the United Kingdom.
December 5 » Lloyd J. Old discovered the first linkage between the major histocompatibility complex (MHC) and disease—mouse leukemia—opening the way for the recognition of the importance of the MHC in the immune response.
When copying data from this family tree, please include a reference to the origin: Hendrik Dreyer, "Dreyer Tree", database, Genealogy Online (https://www.genealogieonline.nl/dreyer-tree/I13047.php : accessed January 27, 2026), "Zacharias Christiaan Grobler (1887-1964)".
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