June 30
June 30 is the 182nd day of the year in the Gregorian calendar; 184 days remain until the year's end. It falls in summer (northern hemisphere) and under the astrological sign of Cancer.
External references
Curated jump-off points to the major almanacs, encyclopaedias and primary sources for this date.
Astronomy
On June 30 the Sun's declination is approximately +23.1°. 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 30.
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.
- 1859 — French acrobat Charles Blondin crossed Niagara Falls on a tightrope. ↗(167 years ago)
- 1908 — The Tunguska event: a meteoroid airburst over Siberia flattened ~2,000 km² of forest. ↗(118 years ago)
- 1934 — The Night of the Long Knives: Adolf Hitler ordered the purge of his political rivals in Germany. ↗(92 years ago)
- 1997 — Hong Kong was transferred from the United Kingdom to the People's Republic of China. ↗(29 years ago)
Notable births
Notable deaths
- 1971 — The three-man crew of Soyuz 11 — the only humans to die in space. ↗(55 years ago)
Numerical & calendrical curiosities
| Day-of-year (182) | 2 × 7 × 13 · composite (no) |
|---|---|
| Days remaining (184) | 2^3 × 23 |
| Date code DDMMYYYY | 30062026 · no palindrome in next 200 years |
| Sun declination | +23.11° (Cooper approximation) |
| Distance from solstice | 10 days |