The first leap second was added to the UTC time system.
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Donald Trump became the first US president to visit North Korea while meeting Kim Jong Un.
The first Chevrolet Corvette was manufactured in the US.
The US government passed the Indian Trade and Intercourse Act.
An unidentified object thought to be a meteoroid or comet smashed into a remote forest in Siberia and destroyed 21,528 square feet of land.
Charles J. Guiteau was hung until dead for the assassination of US President James A. Garfield.
