About April 20
April 20, 2025 is the 110th 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.
You can browse the full year calendar in case you need it.
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Aries is the sun 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.
What Happened On April 20
- 1323 –The University of Rome La Sapienza is instituted by Pope Boniface VIII.
- 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 –Admiral Robert Blake destroys a Spanish silver fleet under heavy fire at Santa Cruz de Tenerife.
- 1657 –Freedom of religion is granted to the Jews of New Amsterdam (later New York City).
- 1689 –The former King James II of England, now deposed, lays siege to Derry.
- 1792 –France declares war on Austria, the beginning of French Revolutionary Wars.
- 1818 –The case of Ashford v Thornton ends, with Abraham Thornton allowed to go free rather than face a retrial for murder, after his demand for trial by battle is upheld.
- 1836 –U.S. Congress passes an act creating the Wisconsin Territory.
- 1862 –Louis Pasteur and Claude Bernard complete the first pasteurization tests.
- 1865 –Astronomer Pietro Angelo Secchi demonstrates the Secchi disk, which measures water clarity, aboard Pope Pius IX’s yacht, the L’Immaculata Concezion.
- 1912 –Opening day for baseball’s Tiger Stadium in Detroit, Michigan, and Fenway Park in Boston, Massachusetts.
- 1914 –19 men, women, and children die in the Ludlow Massacre during a Colorado coal-miner’s strike.
- 1918 –Manfred von Richthofen, aka The Red Baron, shoots down his 79th and 80th victims, his final victories before his death the following day.
- 1945 –World War II: Fuehrerbunker: Adolf Hitler makes his last trip to the surface to award Iron Crosses to boy soldiers of the Hitler Youth.
- 1968 –English politician Enoch Powell makes his controversial Rivers of Blood speech.
- 1972 –Apollo 16, commanded by John Young, lands on the moon.
- 1980 –Climax of Berber Spring in Algeria as hundreds of Berber political activists are arrested.
- 1985 –The ATF raids The Covenant, The Sword, and the Arm of the Lord compound in northern Arkansas.
- 1986 –Pianist Vladimir Horowitz performs in his native Russia for the first time in 61 years.
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