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DIGITAL ALMANAC · EUROPE/LISBON

Historical events for
Saturday, 4 April 2026

14 Week94 day of year26% of year🌖 Moon
  • Birth

    D. Maria II (The Educator)

    Queen Maria II (born April 4, 1819, and died November 15, 1853) was the thirtieth Queen of Portugal. After recovering the crown at the end of the Civil War, her reign was dedicated to consolidating liberalism and promoting national public education.

    † 15/11/1853
  • Birth

    Zénobe-Théophile Gramme

    Zénobe-Théophile Gramme (born April 4, 1826, and died January 20, 1901) was a notable Belgian electrical engineer. His invention of the Gramme machine, the first viable continuous-current generator for industrial-scale production, drove the global adoption of electric power.

    † 20/1/1901
  • Birth

    Alfredo Roque Gameiro

    Alfredo Roque Gameiro (born April 4, 1864, and died August 5, 1935) was an eminent Portuguese painter and illustrator. The undisputed master of watercolor in Portugal, his work stood out for its faithful representation of landscapes, people, and nautical and rural customs of the country.

    † 5/8/1935
  • Birth

    Hugo Weaving

    Hugo Weaving (b. 1960) is a masterful and multi-award-winning British-Australian actor. His chilling portrayal of Agent Smith, who evolves from a simple security program into a viral anomaly capable of consuming the entire Matrix, cemented him as one of the greatest villains in cinema history.

  • History

    Saint Isidore of Seville

    Saint Isidore of Seville (born circa 560 and died April 4, 636) was an Iberian scholar, theologian, and archbishop. Author of the "Etymologies", an authentic encyclopedia of ancient knowledge, he is venerated as a Doctor of the Church and patron saint of the internet and computer scientists.

    † 4/4/636
  • History

    Isolation of Vitamin C

    Scientist C. Glen King of the University of Pittsburgh formally isolated Vitamin C after years of rigorous research from lemon juice. This monumental discovery enabled the eradication of scurvy and opened new horizons in nutritional science.

  • History

    Foundation of NATO

    Twelve Western nations signed the North Atlantic Treaty in Washington, founding NATO (North Atlantic Treaty Organization). The intergovernmental military alliance was created to ensure the collective security and defense of its members.

  • History

    National Day of Senegal

    Senegal National Day commemorates the country's independence from France, formalized on April 4, 1960. The date celebrates national sovereignty and the rich Senegalese cultural heritage.

  • History

    Foundation of Microsoft

    Childhood friends Bill Gates and Paul Allen founded Microsoft in Albuquerque, New Mexico. The company would go on to revolutionize personal computing and become one of the greatest technological giants in world history.

  • History

    International Day for Mine Awareness

    Established by the United Nations General Assembly, this day highlights the ongoing threat of landmines and explosive remnants of war, promoting their eradication and assistance to victims worldwide.

  • History

    Lazarus Saturday (Orthodox Christianity)

    In the Eastern Orthodox tradition, Lazarus Saturday precedes Palm Sunday. The date celebrates the biblical miracle of the resurrection of Lazarus by Jesus, anticipating the theme of victory over death that will culminate in Easter.

  • History

    Holy Saturday (Easter Vigil)

    Holy Saturday is the day of vigil and silent waiting at the tomb of Christ. At nightfall, the Easter Vigil is celebrated, the most important liturgy of the Christian year, which culminates with the announcement of the Resurrection.

  • —
    History

    Saint Isidore of Seville

    Day of Saint Isidore of Seville, archbishop, Doctor of the Church, and one of the greatest scholars of the Middle Ages. He is considered the patron saint of the Internet and computer programmers due to his encyclopedic work.

    † 11/9/1891