The temperature on May 8, 1911 was between 5.0 °C and 18.1 °C and averaged 12.6 °C. There was 13.6 hours of sunshine (89%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northeast. Source: KNMI
January 15 » Palestinian Arabic-language Falastin newspaper founded.
February 18 » The first official flight with airmail takes place from Allahabad, United Provinces, British India (now India), when Henri Pequet, a 23-year-old pilot, delivers 6,500 letters to Naini, about 10 kilometres (6.2mi) away.
May 19 » Parks Canada, the world's first national park service, is established as the Dominion Parks Branch under the Department of the Interior.
June 22 » Mexican Revolution: Government forces bring an end to the Magonista rebellion of 1911 in the Second Battle of Tijuana.
July 7 » The United States, UK, Japan, and Russia sign the North Pacific Fur Seal Convention of 1911 banning open-water seal hunting, the first international treaty to address wildlife preservation issues.
December 27 » "Jana Gana Mana", the national anthem of India, is first sung in the Calcutta Session of the Indian National Congress.
Day of marriage October 30, 1934
The temperature on October 30, 1934 was between 3.2 °C and 9.0 °C and averaged 6.4 °C. There was 5.1 mm of rain during 2.3 hours. There was 2.3 hours of sunshine (24%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
January 15 » The 8.0 Mw Nepal–Bihar earthquake strikes Nepal and Bihar with a maximum Mercalli intensity of XI (Extreme), killing an estimated 6,000–10,700 people.
February 23 » Leopold III becomes King of Belgium.
March 26 » The United Kingdom driving test is introduced.
May 15 » Kārlis Ulmanis establishes an authoritarian government in Latvia.
July 2 » The Night of the Long Knives ends with the death of Ernst Röhm.
December 29 » Japan renounces the Washington Naval Treaty of 1922 and the London Naval Treaty of 1930.
Day of death June 16, 1975
The temperature on June 16, 1975 was between 8.0 °C and 18.4 °C and averaged 13.6 °C. There was -0.1 mm of rain. There was 11.9 hours of sunshine (71%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the west. Source: KNMI
In The Netherlands , there was from Friday, May 11, 1973 to Monday, December 19, 1977 the cabinet Den Uyl, with Drs. J.M. den Uyl (PvdA) as prime minister.
April 25 » As North Vietnamese forces close in on the South Vietnamese capital Saigon, the Australian Embassy is closed and evacuated, almost ten years to the day since the first Australian troop commitment to South Vietnam.
May 6 » During a lull in fighting, 100,000 Armenians gather in Beirut for the 60th anniversary commemorations of the Armenian Genocide.
June 29 » Steve Wozniak tested his first prototype of Apple I computer.
August 14 » The Rocky Horror Picture Show, the longest-running release in film history, opens in London.
September 16 » Cape Verde, Mozambique, and São Tomé and Príncipe join the United Nations.
November 28 » East Timor declares its independence from Portugal.
Day of burial June 21, 1975
The temperature on June 21, 1975 was between 13.0 °C and 24.1 °C and averaged 19.1 °C. There was 0.6 mm of rain during 0.5 hours. There was 5.9 hours of sunshine (35%). The partly or heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northeast. Source: KNMI
In The Netherlands , there was from Friday, May 11, 1973 to Monday, December 19, 1977 the cabinet Den Uyl, with Drs. J.M. den Uyl (PvdA) as prime minister.
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The Family tree Van Os publication was prepared by wijlen Harry Lubberman (as indicated in the digital, genealogical legacy, this publication remains online, contact is not possible).
When copying data from this family tree, please include a reference to the origin: wijlen Harry Lubberman, "Family tree Van Os", database, Genealogy Online (https://www.genealogieonline.nl/van-os-stamboom/I472.php : accessed February 17, 2026), "Gerhardus Hermannus Johan "Gerard" Kolker (1911-1975)".
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