In-N-Out Burger opened its first restaurant in Baldwin Park, Los Angeles, US.
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The US gross national debt exceeded $1 trillion.
Inventor Chester Carlson created the first Xerox image.
The first images from the surface of Venus were received after the Soviet spacecraft Venera 9 landed on the planet.
NASA announced that 16 researchers would be a part of a nine-month study on unidentified aerial phenomena or UFOs.
The Royal Observatory in Greenwich, UK, was adopted as the world's Prime Meridian.
