The temperature on June 15, 1971 was between 7.9 °C and 9.9 °C and averaged 9.1 °C. There was 10.9 mm of rain during 15.1 hours. The almost completely overcast was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northeast. Source: KNMI
February 9 » The 6.5–6.7 Mw Sylmar earthquake hits the Greater Los Angeles Area with a maximum Mercalli intensity of XI (Extreme), killing 64 and injuring 2,000.
May 13 » Over 900 unarmed Bengali Hindus are murdered in the Demra massacre.
May 30 » Mariner program: Mariner 9 is launched to map 70% of the surface, and to study temporal changes in the atmosphere and surface, of Mars.
August 22 » J. Edgar Hoover and John Mitchell announce the arrest of 20 of the Camden 28.
November 15 » Intel releases the world's first commercial single-chip microprocessor, the 4004.
November 22 » In Britain's worst mountaineering tragedy, the Cairngorm Plateau Disaster, five children and one of their leaders are found dead from exposure in the Scottish mountains.
When copying data from this family tree, please include a reference to the origin: J. van Broekhoven, "Database Van Broekhoven", database, Genealogy Online (https://www.genealogieonline.nl/database-van-broekhoven/I325579.php : accessed December 24, 2025), "Doodgeboren dochter de Martines (1971)".
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