April 10
April 10 is the 101st day of the year in the Gregorian calendar; 265 days remain until the year's end. It falls in spring (northern hemisphere) and under the astrological sign of Aries.
External references
Curated jump-off points to the major almanacs, encyclopaedias and primary sources for this date.
Astronomy
On April 10 the Sun's declination is approximately +7.9°. At this latitude the Sun is north of the celestial equator, giving the Northern Hemisphere longer days than nights.
For specific rise/set times at your location, see the U.S. Naval Observatory, or the NASA APOD archive for any imagery published on a April 10.
Position in the year
Holidays & observances
No widely-observed holidays catalogued for this day in our base set. See the external almanacs above for region-specific observances.
Events
A selection of widely-documented historical events that took place on this date. Years marked BCE follow standard astronomical convention.
1815 — Mount Tambora in present-day Indonesia erupted, the largest volcanic eruption in recorded history; it caused the 1816 "Year Without a Summer". ↗(211 years ago)more
In April of 1815, Mount Tambora, a volcano on the island of Sumbawa in present-day Indonesia, erupted in what is now considered the most powerful volcanic eruption in recorded human history. This eruption, with a volcanic explosivity index (VEI) of 7, ejected 37–45 km3 of dense-rock equivalent (DRE) material into the atmosphere, and was the most recent co...
- 1866 — The American Society for the Prevention of Cruelty to Animals (ASPCA) was founded. ↗(160 years ago)
more
The American Society for the Prevention of Cruelty to Animals (ASPCA) is a non-profit organization dedicated to preventing animal cruelty. Based in New York City since its inception in 1866, the organization's mission is "to provide effective means for the prevention of cruelty to animals throughout the United States."
1912 — The RMS Titanic departed Southampton on her maiden voyage. ↗(114 years ago)more
RMS Titanic was a British ocean liner that sank in the early hours of 15 April 1912 as a result of striking an iceberg on her maiden voyage from Southampton, England, to New York City, United States. Of the 2,208 passengers and crew aboard, approximately 1,500 died, making the incident one of the deadliest peacetime sinkings of a single ship.
1925 — The Great Gatsby by F. Scott Fitzgerald was first published. ↗(101 years ago)more
The Great Gatsby is a 1925 tragedy novel by American writer F. Scott Fitzgerald. Set in the Jazz Age on Long Island, near New York City, the novel depicts first-person narrator Nick Carraway's interactions with Jay Gatsby, a mysterious millionaire obsessed with reuniting with his former lover, Daisy Buchanan.
1972 — The U.S. and 70 other nations signed the Biological Weapons Convention. ↗(54 years ago)more
The Biological Weapons Convention (BWC), or Biological and Toxin Weapons Convention (BTWC), is a disarmament treaty that effectively bans biological and toxin weapons by prohibiting their development, production, acquisition, transfer, stockpiling and use.
Notable births
1755 — Samuel Hahnemann, German physician and founder of homeopathy. ↗(271 years ago)more
Christian Friedrich Samuel Hahnemann was a German medical doctor, best known for creating the pseudoscientific system of alternative medicine called homeopathy.
1932 — Omar Sharif, Egyptian actor. ↗(94 years ago)more
Omar Sharif was an Egyptian actor, generally regarded as his country's greatest male film star. He began his career in Egypt in the early 1950s. He is best known for his appearances in American, British, French, and Italian productions, and has been described as "the first Egyptian and Arab to conquer Hollywood".
Notable deaths
1813 — Joseph-Louis Lagrange, Italian-French mathematician. ↗(213 years ago)more
Joseph-Louis Lagrange, also reported as Giuseppe Luigi Lagrange or Lagrangia, was an Italian and naturalized French mathematician, physicist and astronomer. He made significant contributions to the fields of analysis, number theory, and both classical and celestial mechanics.
Numerical & calendrical curiosities
| Day-of-year (101) | 101 · prime |
|---|---|
| Days remaining (265) | 5 × 53 |
| Date code DDMMYYYY | 10042026 · no palindrome in next 200 years |
| Sun declination | +7.91° (Cooper approximation) |
| Distance from solstice | 71 days |