What are the important events that happened on April 20? Here are historical events, facts, and some myths about this day.

April 20: Facts & Myths About This Day

April 20 is the 110^th day of the year 2025 in the Gregorian calendar. There are 255 days remaining until the end of this year. The day of the week is Sunday.

Under the Julian calendar, this day is April 7, 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, 1,745,107,200 seconds 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 ‘hectadecagon’ day.

Aries is the zodiac sign of a person born on this day. Diamond is the modern birthstone for this month. Opal is the mystical birthstone from Tibetan origin that dates back over a thousand years.

According to the lunisolar Chinese calendar, there are 303 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 4,503 days since this fabled cataclysmic event.

April 20 Historical Events

• 1453 –
  The last naval battle in Byzantine history occurs, as three Genoese galleys escorting a Byzantine transport fight their way through the huge Ottoman blockade fleet and into the Golden Horn.
• 1653 –
  Oliver Cromwell dissolves the Rump Parliament.
• 1657 –
  Freedom of religion is granted to the Jews of New Amsterdam (later New York City).
• 1770 –
  The Georgian king Erekle II, abandoned by his Russian ally Count Totleben, wins a victory over Ottoman forces at Aspindza.
• 1810 –
  The Governor of Caracas declares independence from Spain.
• 1836 –
  U.S. Congress passes an act creating the Wisconsin Territory.
• 1861 –
  American Civil War: Robert E. Lee resigns his commission in the United States Army in order to command the forces of the state of Virginia.
• 1916 –
  The Chicago Cubs play their first game at Weeghman Park (currently Wrigley Field), defeating the Cincinnati Reds 7-6 in 11 innings.
• 1926 –
  Western Electric and Warner Bros. announce Vitaphone, a process to add sound to film.
• 2007 –
  Johnson Space Center Shooting: A man with a handgun barricades himself in NASA’s Johnson Space Center in Houston, Texas before killing a male hostage and himself.

Who were born on April 20?

• 1633 –
  Emperor Go-Komyo of Japan (d. 1654)
• 1727 –
  Comte de Mercy-Argenteau, Belgian-born Austrian diplomat (d. 1794)
• 1884 –
  Princess Beatrice of Edinburgh and Saxe-Coburg and Gotha (d. 1966)
• 1923 –
  Mother Angelica, American nun and broadcaster
• 1937 –
  George Takei, American actor
• 1938 –
  Johnny Tillotson, American singer and songwriter
• 1939 –
  Gro Harlem Brundtland, former Prime Minister of Norway
• 1948 –
  Rémy Trudel, French Canadian politician
• 1958 –
  Viacheslav Fetisov, Russian ice hockey player
• 1971 –
  Nikos Kyzeridis, Greek footballer

Who died on April 20?

• 1176 –
  Richard de Clare, 2nd Earl of Pembroke, English military leader (b. 1130)
• 1558 –
  Johannes Bugenhagen, German reformer (b. 1485)
• 1643 –
  Christoph Demantius, German composer (b. 1567)
• 1874 –
  Alexander H. Bailey, American politician (b. 1817)
• 1951 –
  Ivanoe Bonomi, Prime Minister of Italy (b. 1873)
• 1999 –
  Rick Rude, American professional wrestler (b. 1958)
• 2002 –
  Alan Dale, American singer (b. 1925)
• 2005 –
  Fumio Niwa, Japanese novelist (b. 1904)
• 2007 –
  Andrew Hill, American jazz composer and pianist (b. 1931)
• 2011 –
  Tim Hetherington, British-American photojournalist (b. 1970)