About June 15

June 15, 2021 is the 166th day of the year 2021 in the Gregorian calendar. There are 199 days remaining until the end of this year. The day of the week is Tuesday.

You can browse the full year calendar in case you need it.

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Gemini is the sun sign of a person born on this day. Pearl is the modern birthstone for this month. Moonstone is the mystical birthstone from Tibetan origin that dates back over a thousand years.

According to the lunisolar Chinese calendar, there are 231 days remaining before the start of the next Chinese New Year.

What Happened On June 15

  • 923
    Battle of Soissons: King Robert I of France is killed and King Charles the Simple is arrested by the supporters of Duke Rudolph of Burgundy.
  • 1184
    King Magnus V of Norway is killed at the Battle of Fimreite.
  • 1219
    Northern Crusades: Danish victory at the Battle of Lyndanisse (modern-day Tallinn) establishes the Danish Duchy of Estonia. According to legend, this battle also marks the first use of the Dannebrog, the world’s first national flag still in use, as the national flag of Denmark.
  • 1520
    Pope Leo X threatens to excommunicate Martin Luther in papal bull Exsurge Domine.
  • 1580
    Philip II of Spain declares William the Silent to be an outlaw.
  • 1667
    The first human blood transfusion is administered by Dr. Jean-Baptiste Denys.
  • 1752
    Benjamin Franklin proves that lightning is electricity (traditional date, the exact date is unknown).
  • 1775
    American Revolutionary War: George Washington is appointed commander-in-chief of the Continental Army.
  • 1776
    Delaware Separation Day – Delaware votes to suspend government under the British Crown and separate officially from Pennsylvania.
  • 1808
    Joseph Bonaparte becomes King of Spain.
  • 1836
    Arkansas is admitted as the 25th U.S. state.
  • 1844
    Charles Goodyear receives a patent for vulcanization, a process to strengthen rubber.
  • 1859
    Pig War: Ambiguity in the Oregon Treaty leads to the “Northwestern Boundary Dispute” between United States and British/Canadian settlers.
  • 1888
    Crown Prince Wilhelm becomes Kaiser Wilhelm II; he will be the last Emperor of the German Empire.
  • 1904
    A fire aboard the steamboat SS General Slocum in New York City’s East River kills 1,000.
  • 1919
    John Alcock and Arthur Brown complete the first nonstop transatlantic flight when they reach Clifden, County Galway, Ireland.
  • 1940
    World War II: Operation Ariel begins – Allied troops start to evacuate France, following Germany’s takeover of Paris and most of the nation.
  • 1954
    UEFA (Union of European Football Associations) is formed in Basel, Switzerland.
  • 1991
    In the Philippines, Mount Pinatubo erupts in the second largest volcanic eruption of the 20th Century. In the end, over 800 people die.
  • 1992
    The United States Supreme Court rules in United States v. Álvarez-Machaín that it is permissible for the United States to forcibly extradite suspects in foreign countries and bring them to the USA for trial, without approval from those other countries.

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