Clyde Tombaugh Discovers Pluto, February 18, 1930

The United Kingdom, Japan and the United States sign the London Naval Treaty regulating submarine warfare and limiting shipbuilding. Date: April 22, 1930 Read more on Wikipedia → 📅 Other events on April 22 📅 Events on this day in 1930 📅 On This Day (Today) More events from 1930First London Naval Treaty Ratifications Exchange…

Sovnarkom establishes decree time in the USSR. Date: June 16, 1930 Read more on Wikipedia → 📅 Other events on June 16 📅 Events on this day in 1930 📅 On This Day (Today) More events from 1930International Unemployment Day Global Demonstrations by Comintern March 6, 1930Mahatma Gandhi Begins Salt March Protest, March 12, 1930Elm…

The Romanian Football Federation joins FIFA. Date: February 16, 1930 Read more on Wikipedia → 📅 Other events on February 16 📅 Events on this day in 1930 📅 On This Day (Today) More events from 1930Pluto Officially Proposed for Newly Discovered Dwarf Planet, May 1, 1930Elm Farm Ollie First Cow to Fly and Be…

"Pluto" is officially proposed for the name of the newly discovered dwarf planet by Vesto Slipher in the Lowell Observatory Observation Circular. The name quickly catches on. Date: May 1, 1930 Read more on Wikipedia → 📅 Other events on May 1 📅 Events on this day in 1930 📅 On This Day (Today) More…

International Unemployment Day demonstrations globally initiated by the Comintern. Date: March 6, 1930 Read more on Wikipedia → 📅 Other events on March 6 📅 Events on this day in 1930 📅 On This Day (Today) More events from 1930Salmas Earthquake Shakes Iran and Turkey, 3,000 Killed May 7, 1930W1XAV Telecasts First U.S. TV Ad,…