June 30 is the 181st day of the year in the Gregorian calendar; 184 days remain until the end of the year.
We have some interesting facts & historic events all about June 30th, including areas in religion, crime, health and more.
Keep reading for more interesting facts about June 30th in history!
Table of Contents
Global Celebrations
- World Social Media Day
- National Meteor Watch Day
- World Asteroid Day
- International Day of Parliamentarism
- National Bomb Pop Day
Historic Events
What Happened On This Day – June 30
1972: The first leap second is added to UT
CLeap seconds are added to Coordinated Universal Time (UTC) from time to time to account for the Earth’s slowing rotation. UTC is the basis for the calculation of local times worldwide.
1971: The crew of Soviet spacecraft “Soyuz 11” dies after the loss of air supply
The cause of the tragedy was a faulty valve. The three cosmonauts had previously achieved the first docking of a spacecraft to a space station in history.
1936: The novel “Gone with the Wind” is published
Margaret Mitchell’s story set in the American South during the American Civil War became one of the United States’ biggest best-sellers. The 1939 movie version starring Vivien Leigh and Clark Gable was similarly successful.
1908: The Tunguska event leaves 2000 square km of Siberian forest flattened and scorched
The devastation is believed to have been caused by the explosion of an asteroid or comet. It is the largest impact event in recorded history.
1905: Albert Einstein submits a paper outlining his theory of special relativity
The text “Zur Elektrodynamik bewegter Körper” comprises the currently accepted theory about the relationship between space and time. The theory of special relativity is the basis for his theory of general relativity, which he published in 1916.
1960: President Joseph Kasa-Vubu speaking at the independence ceremony. Léopoldvile, Congo. June 30, 1960

1944: B-17 Flying Fortress ‘Mizpah’ after it’s nose was blown off by anti-aircraft fire over Budapest, Hungary. 1944.

1938: Carol II Hohenzollern of Romania and his son, Prince Michael (later King Michael) in 1938

Famous Birthdays
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
1975: Ralf Schumacher, German race car driver
1966: Mike Tyson, American boxer, actor
Heartbreaking Deaths
Deaths On This Day, June 30
2012: Yitzhak Shamir, Israeli politician, 7th Prime Minister of Israel
2001: Chet Atkins, American musician, songwriter, producer
1984: Lillian Hellman, American playwright
1974: Vannevar Bush, American engineer
1934: Kurt von Schleicher, German general, politician, 23rd Chancellor of Germany