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)
- 1866 — The American Society for the Prevention of Cruelty to Animals (ASPCA) was founded. ↗(160 years ago)
- 1912 — The RMS Titanic departed Southampton on her maiden voyage. ↗(114 years ago)
- 1925 — The Great Gatsby by F. Scott Fitzgerald was first published. ↗(101 years ago)
- 1972 — The U.S. and 70 other nations signed the Biological Weapons Convention. ↗(54 years ago)
Notable births
Notable deaths
- 1813 — Joseph-Louis Lagrange, Italian-French mathematician. ↗(213 years ago)
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 |