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- 1972 The first leap second is added to UTC
Leap seconds are added to Coordinated Universal Time (UTC) from time to time to account for the Earth’s slowing rotation.
- 1971 The crew of Soviet spacecraft “Soyuz 11” dies after the loss of air supply
The tradegy’s cause was a faulty valve.
- 1936 The novel “Gone with the Wind” is published
One of the biggest best-sellers in the United States.
Births On This Day,
June 30
- 1985 Michael Phelps
American swimmer
- 1985 Cody Rhodes
American wrestler, actor
- 1983 Cheryl Cole
English singer-songwriter, dancer, model
Deaths On This Day,
June 30
- 2001 Mortimer J. Adler
American philosopher, author
- 1981 Terry Fox
Canadian athlete, activist
- 1975 Rod Serling
American screenwriter, producer, created The Twilight Zone
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