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.
February 2 » In Punxsutawney, Pennsylvania the first Groundhog Day is observed.
June 23 » The Rocky Mountains Park Act becomes law in Canada creating the nation's first national park, Banff National Park.
July 4 » The founder of Pakistan, Quaid-i-Azam Muhammad Ali Jinnah, joins Sindh-Madrasa-tul-Islam, Karachi.
July 6 » David Kalākaua, monarch of the Kingdom of Hawaii, is forced to sign the Bayonet Constitution, which transfers much of the king's authority to the Legislature of the Kingdom of Hawaii.
July 26 » Publication of the Unua Libro, founding the Esperanto movement.
September 5 » A fire at the Theatre Royal, Exeter, kills 186.
Day of death August 11, 1970
The temperature on August 11, 1970 was between 8.2 °C and 20.2 °C and averaged 15.3 °C. There was 0.1 mm of rain during 0.1 hours. There was 8.4 hours of sunshine (56%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the north-northwest. Source: KNMI
March 5 » The Treaty on the Non-Proliferation of Nuclear Weapons goes into effect after ratification by 43 nations.
March 31 » Explorer 1 re-enters the Earth's atmosphere after 12 years in orbit.
April 24 » China launches Dong Fang Hong I, becoming the fifth nation to put an object into orbit using its own booster.
September 16 » King Hussein of Jordan declares war against the Palestine Liberation Organization, the conflict which became to be known as Black September.
October 17 » FLQ terrorists murder Quebec Vice-Premier and Minister of Labour Pierre Laporte.
November 12 » The Oregon Highway Division attempts to destroy a rotting beached Sperm whale with explosives, leading to the now infamous "exploding whale" incident.
When copying data from this family tree, please include a reference to the origin: Van Knippenberg, "Family tree Van Knippenberg", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-van-knippenberg/I3454.php : accessed January 2, 2026), "Johannes Leo Hubertus Knols (1887-1970)".
Copy warning
Genealogical publications are copyright protected. Although data is often retrieved from public archives, the searching, interpreting, collecting, selecting and sorting of the data results in a unique product. Copyright protected work may not simply be copied or republished.
Please stick to the following rules
Request permission to copy data or at least inform the author, chances are that the author gives permission, often the contact also leads to more exchange of data.
Do not use this data until you have checked it, preferably at the source (the archives).
State from whom you have copied the data and ideally also his/her original source.