About April 17
April 17, 2025 is the 107th day of the year 2025 in the Gregorian calendar. There are 258 days remaining until the end of this year. The day of the week is Thursday.
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 306 days remaining before the start of the next Chinese New Year.
What Happened On April 17
- 1080 –King of Denmark Harald III dies and is succeeded by Canute IV, who would later be the first Dane to be canonized.
- 1397 –Geoffrey Chaucer tells the Canterbury Tales for the first time at the court of Richard II. Chaucer scholars have also identified this date (in 1387) the start of the book’s pilgrimage to Canterbury.
- 1521 –Martin Luther speaks to the assembly at the Diet of Worms, refusing to recant his teachings.
- 1555 –After 18 months of siege, Siena surrenders to the Florentine-Imperial army. The Republic of Siena is incorporated into the Grand Duchy of Tuscany.
- 1797 –Citizens of Verona, Italy, begin an eight-day rebellion against the French occupying forces, which will end unsuccessfully.
- 1797 –Sir Ralph Abercromby attacks San Juan, Puerto Rico in what would be one of the largest invasions of the Spanish territories in America.
- 1864 –American Civil War: The Battle of Plymouth begins – Confederate forces attack Plymouth, North Carolina.
- 1895 –The Treaty of Shimonoseki between China and Japan is signed. This marks the end of the First Sino-Japanese War, and the defeated Qing Empire is forced to renounce its claims on Korea and to concede the southern portion of the Fengtien province, Taiwan and the Pescadores Islands to Japan.
- 1897 –The Aurora, Texas UFO incident
- 1905 –The Supreme Court of the United States decides Lochner v. New York which holds that the “right to free contract” is implicit in the due process clause of the Fourteenth Amendment of the United States Constitution.
- 1907 –The Ellis Island immigration center processes 11,747 people, more than on any other day.
- 1912 –Russian troops open fire on striking goldfield workers in northeast Siberia, killing at least 150.
- 1941 –World War II: The Kingdom of Yugoslavia surrenders to Germany.
- 1942 –French prisoner of war General Henri Giraud escapes from his castle prison in Festung Königstein.
- 1945 –Brazilian forces liberate the town of Montese, Italy, from German Nazi forces.
- 1964 –Jerrie Mock becomes the first woman to circumnavigate the world by air.
- 1969 –Czechoslovakian Communist Party chairman Alexander Dubček is deposed.
- 1970 –Apollo program: The ill-fated Apollo 13 spacecraft returns to Earth safely.
- 1984 –Police Constable Yvonne Fletcher is killed by gunfire from the Libyan People’s Bureau in London during a small demonstration outside the embassy. Ten others are wounded. The events lead to an 11-day siege of the building.
- 2006 –Sami Hammad, a Palestinian suicide bomber, detonates an explosive device in Tel Aviv, killing 11 people and injuring 70.
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