About April 1

April 1, 2025 is the 91st day of the year 2025 in the Gregorian calendar. There are 274 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.

DayOfTheWeek.org Are you looking for a day of the week calculator? Try it on any date like anniversaries, birthday of someone you know, or any other date that is special to you. You can even try it on historical dates. For example: April 1
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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 322 days remaining before the start of the next Chinese New Year.

April 1: More About This Day

April 1 is most notable in many countries for being April Fools’ Day.

What Happened On April 1

  • 325
    Crown Prince Jin Chengdi, age 4, succeeds his father Jin Mingdi as emperor of the Eastern Jin Dynasty.
  • 527
    Byzantine Emperor Justin I names his nephew Justinian I as co-ruler and successor to the throne.
  • 1293
    Robert Winchelsey leaves England for Rome, to be consecrated as Archbishop of Canterbury.
  • 1572
    In the Eighty Years’ War, the Watergeuzen capture Brielle from the Spaniards, gaining the first foothold on land for what would become the Dutch Republic.
  • 1789
    In New York City, the United States House of Representatives holds its first quorum and elects Frederick Muhlenberg of Pennsylvania as its first House Speaker.
  • 1833
    The Convention of 1833, a political gathering of settlers in Mexican Texas to help draft a series of petitions to the Mexican government, begins in San Felipe de Austin
  • 1854
    Hard Times begins serialisation in Charles Dickens’ magazine, Household Words.
  • 1865
    American Civil War: Battle of Five Forks – In Siege of Petersburg, Confederate General Robert E. Lee begins his final offensive.
  • 1893
    The rank of Chief Petty Officer in the United States Navy is established.
  • 1918
    The Royal Air Force is created by the merger of the Royal Flying Corps and the Royal Naval Air Service.
  • 1933
    The recently elected Nazis under Julius Streicher organize a one-day boycott of all Jewish-owned businesses in Germany, ushering in a series of anti-Semitic acts.
  • 1937
    Aden becomes a British crown colony. Bombing of Jaén, Spain by Nazi forces.
  • 1944
    Navigation errors lead to an accidental American bombing of the Swiss city of Schaffhausen.
  • 1946
    Aleutian Island earthquake: A 7.8 magnitude earthquake near the Aleutian Islands creates a tsunami that strikes the Hawaiian Islands killing 159, mostly in Hilo.
  • 1947
    Paul becomes king of Greece, on the death of his childless elder brother, George II.
  • 1949
    The 26 counties of the Irish Free State become the Republic of Ireland.
  • 1955
    The EOKA rebellion against The British Empire begins in Cyprus, with the goal of obtaining the desired unification (“enosis”) with Greece.
  • 1970
    President Richard Nixon signs the Public Health Cigarette Smoking Act into law, requiring the Surgeon General’s warnings on tobacco products and banning cigarette advertisements on television and radio in the United States, starting on January 1, 1971.
  • 1979
    Iran becomes an Islamic Republic by a 98% vote, officially overthrowing the Shah.
  • 2001
    Same-sex marriage becomes legal in the Netherlands, the first country to allow it.

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