June 23
June 23 is the 175th day of the year in the Gregorian calendar; 191 days remain until the year's end. It falls in summer (northern hemisphere) and under the astrological sign of Cancer.
Day of year
175
Days remaining
191
ISO week
25
Zodiac
Cancer
Season
Summer
Sun declination
+23.4°
External references
Curated jump-off points to the major almanacs, encyclopaedias and primary sources for this date.
Wikipedia: this day →Britannica: this day →LoC: Today in History →History.com: this day →On-This-Day.com →BBC: On This Day →NYT: this day →Time and Date →NASA APOD archive →U.S. Naval Observatory →Wolfram|Alpha →Wikidata →Google Books →JSTOR →Internet Archive →
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Astronomy
Computed via Cooper's formula. Positive declination = Sun north of the celestial equator (Northern Hemisphere summer).
On June 23 the Sun's declination is approximately +23.4°. 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 June 23.
Position in the year
Holidays & observances
- United Nations Public Service Day
Events
A selection of widely-documented historical events that took place on this date. Years marked BCE follow standard astronomical convention.
- 1314 — The Battle of Bannockburn began; Robert the Bruce defeated the English the next day. ↗(712 years ago)
- 1611 — English explorer Henry Hudson, his son and seven loyal crew members were set adrift in Hudson Bay by his mutinous crew. ↗(415 years ago)
- 1868 — Christopher Latham Sholes was granted a patent for the typewriter. ↗(158 years ago)
- 2016 — The United Kingdom voted in a referendum to leave the European Union ("Brexit"). ↗(10 years ago)
Notable births
Notable deaths
- 1995 — Jonas Salk, developer of the polio vaccine. ↗(31 years ago)
Numerical & calendrical curiosities
| Day-of-year (175) | 5^2 × 7 · composite (no) |
|---|---|
| Days remaining (191) | 191 |
| Date code DDMMYYYY | 23062026 · no palindrome in next 200 years |
| Sun declination | +23.41° (Cooper approximation) |
| Distance from solstice | 3 days |