What are the important events that happened on June 15? Here are historical events, facts, and some myths about this day.

June 15: Facts & Myths About This Day

June 15 is the 166^th day of the year 2025 in the Gregorian calendar. There are 199 days remaining until the end of this year. The day of the week is Sunday.

Under the Julian calendar, this day is June 2, 2025 – a Sunday. Both day of the week are the same but did you notice the difference with the Gregorian calendar?

When this day started, 486,096 hours has elapsed since midnight of January 1, 1970 – the Unix epoch.

Strange as it may, if we name this day after a polygon then it will be called ‘hectahexacontahexagon’ day.

Gemini is the zodiac 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 247 days remaining before the start of the next Chinese New Year.

The ancient Maya civilization believes that the end of the world will happen on December 21, 2012. There are now 4,559 days since this fabled cataclysmic event.

June 15 Historical Events

• 1184 –
  King Magnus V of Norway is killed at the Battle of Fimreite.
• 1667 –
  The first human blood transfusion is administered by Dr. Jean-Baptiste Denys.
• 1776 –
  Delaware Separation Day – Delaware votes to suspend government under the British Crown and separate officially from Pennsylvania.
• 1836 –
  Arkansas is admitted as the 25th U.S. state.
• 1859 –
  Pig War: Ambiguity in the Oregon Treaty leads to the “Northwestern Boundary Dispute” between United States and British/Canadian settlers.
• 1864 –
  Arlington National Cemetery is established when 200 acre around Arlington Mansion (formerly owned by Confederate General Robert E. Lee) are officially set aside as a military cemetery by U.S. Secretary of War Edwin M. Stanton.
• 1877 –
  Henry Ossian Flipper becomes the first African American cadet to graduate from the United States Military Academy.
• 1920 –
  A new border treaty between Germany and Denmark gives northern Schleswig to Denmark.
• 1978 –
  King Hussein of Jordan marries American Lisa Halaby, who takes the name Queen Noor.
• 1985 –
  Rembrandt’s painting Danaë is attacked by a man (later judged insane) who throws sulfuric acid on the canvas and cuts it twice with a knife.

Who were born on June 15?

• 1911 –
  W.V. Awdry, British children’s writer (d. 1997)
• 1927 –
  Hugo Pratt, Italian comic book creator (d. 1995)
• 1954 –
  Beverley Whitfield, Australian swimmer (d. 1996)
• 1956 –
  Lance Parrish, American baseball player
• 1961 –
  Kai Eckhardt, German bassist and composer (Garaj Mahal, Vital Information)
• 1968 –
  Károly Güttler, Hungarian swimmer
• 1969 –
  Cédric Pioline, French tennis player
• 1970 –
  Gaëlle Méchaly, French soprano
• 1971 –
  Christos Myriounis, Greek basketball player
• 1984 –
  Tim Lincecum, American baseball player

Who died on June 15?

• 1246 –
  Duke Frederick II of Austria (b. 1219)
• 1614 –
  Henry Howard, 1st Earl of Northampton, English politician (b. 1540)
• 1679 –
  Guillaume Courtois, French painter (b. 1628)
• 1844 –
  Thomas Campbell, Scottish poet (b. 1777)
• 1888 –
  Emperor Friedrich III of Germany (b. 1831)
• 1965 –
  E. A. Speiser, American Bible scholar (b. 1902)
• 1995 –
  John Vincent Atanasoff, American computer pioneer (b. 1903)
• 2000 –
  Jules Roy, French writer (b. 1907)
• 2001 –
  Henri Alekan, French cinematographer (b. 1909)
• 2006 –
  Raymond Devos, French humourist (b. 1922)