The temperature on May 2, 1913 was between 6.9 °C and 13.5 °C and averaged 9.6 °C. There was 2.7 mm of rain. There was 3.8 hours of sunshine (25%). The average windspeed was 2 Bft (weak wind) and was prevailing from the west. Source: KNMI
In The Netherlands , there was from February 12, 1908 to August 29, 1913 the cabinet Heemskerk, with Mr. Th. Heemskerk (AR) as prime minister.
In The Netherlands , there was from August 29, 1913 to September 9, 1918 the cabinet Cort van der Linden, with Mr. P.W.A. Cort van der Linden (liberaal) as prime minister.
February 2 » Grand Central Terminal is opened in New York City.
April 8 » The 17th Amendment to the United States Constitution, requiring direct election of Senators, becomes law.
July 3 » Confederate veterans at the Great Reunion of 1913 reenact Pickett's Charge; upon reaching the high-water mark of the Confederacy they are met by the outstretched hands of friendship from Union survivors.
July 31 » The Balkan States sign an armistice in Bucharest.
August 13 » First production in the UK of stainless steel by Harry Brearley.
December 21 » Arthur Wynne's "word-cross", the first crossword puzzle, is published in the New York World.
Day of death September 17, 1970
The temperature on September 17, 1970 was between 10.0 °C and 18.2 °C and averaged 14.0 °C. There was 0.1 mm of rain during 0.2 hours. There was 4.8 hours of sunshine (38%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
April 28 » Vietnam War: U.S. President Richard Nixon formally authorizes American combat troops to take part in the Cambodian campaign.
June 21 » Penn Central declares Section 77 bankruptcy in what was the largest U.S. corporate bankruptcy to date.
September 2 » NASA announces the cancellation of two Apollo missions to the Moon, Apollo 15 (the designation is re-used by a later mission), and Apollo 19.
September 6 » Two passenger jets bound from Europe to New York are simultaneously hijacked by Palestinian terrorist members of the PFLP and taken to Dawson's Field, Jordan.
October 5 » The British Trade Commissioner is kidnapped by members of the FLQ, triggering the October Crisis in Canada.
November 21 » Vietnam War: Operation Ivory Coast: A joint United States Air Force and Army team raids the Sơn Tây prisoner-of-war camp in an attempt to free American prisoners of war thought to be held there.
When copying data from this family tree, please include a reference to the origin: Yolande Harps, "Family tree Harps (Harp)", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-harps/I149.php : accessed January 7, 2026), "Roelof Johannes Harps (1913-1970)".
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