The sky on May 30, 2016 — as it really was
That day the Sun stood in Taurus, while the horoscope says "Gemini". The gap is 24.1° of precession.
Bodies on the ecliptic (noon UTC)
- ☉︎ Sun — 69.5° · sign Gemini · constellation Taurus
- ☽︎ Moon — 352.3° · sign Pisces · constellation Aquarius
- ☿︎ Mercury — 46.7° · sign Taurus · constellation Aries
- ♀︎ Venus — 67.5° · sign Gemini · constellation Taurus
- ♂︎ Mars — 239.0° · sign Scorpio · constellation Libra
- ♃︎ Jupiter — 163.9° · sign Virgo · constellation Leo
- ♄︎ Saturn — 253.4° · sign Sagittarius · constellation Ophiuchus
- ☽︎ Moon 39% illuminated
astronomy-engine ephemerides (VSOP87/ELP), IAU 1930 constellation boundaries. Positions accurate to a fraction of a degree.
The day’s dossier, from real data
Checkable facts with a tag and a source; the classical reading is in the chart.
- The Moon that day [EXACT]
last quarter, 39% lit; the Moon was 371,181 km away.
astronomy-engine - How far Earth has travelled since [EXACT]
10.3 orbits of the Sun — 9,724 million km, that is 12,648 return trips to the Moon; 3,779 rotations of Earth; with the Sun — 75.1 billion km around the Galactic centre, 2.9 light-days.
29.78 km/s along the orbit; 230 km/s around the Galactic centre - Mars then and now [EXACT]
On that day Mars was 75 million km away; today it is 245 million km (farther by 3.3×).
astronomy-engine; checked against JPL Horizons for 2026-09-14 - Solar cycle [ESTIMATE]
That day fell in solar cycle 24, on the decline (68% through the cycle).
SILSO smoothed minima - When the sky repeats [EXACT]
Mars returns to that day’s point of its orbit on September 12, 2027; Jupiter — in 2028; a full moon exactly on this date — May 30, 2064
sidereal periods: Mars 686.98 d, Jupiter 11.862 yr - How far the sky has drifted since [EXACT]
The vernal point has shifted 504″ since that day; the real constellations now sit 24.1° away from the astrologers’ “signs”.
precession 50.29″/yr - Picture of the day [EXACT]
NASA Astronomy Picture of the Day for this date: apod.nasa.gov/apod/ap160530.html
NASA APOD
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