The sky on October 30, 1930 — as it really was
That day the Sun stood in Virgo, while the horoscope says "Scorpio". The gap is 22.9° of precession.
Bodies on the ecliptic (noon UTC)
- ☉︎ Sun — 216.3° · sign Scorpio · constellation Virgo
- ☽︎ Moon — 318.5° · sign Aquarius · constellation Capricornus
- ☿︎ Mercury — 211.5° · sign Scorpio · constellation Virgo
- ♀︎ Venus — 247.2° · sign Sagittarius · constellation Scorpius
- ♂︎ Mars — 124.5° · sign Leo · constellation Cancer
- ♃︎ Jupiter — 110.4° · sign Cancer · constellation Gemini
- ♄︎ Saturn — 277.3° · sign Capricorn · constellation Sagittarius
- ☽︎ Moon 61% 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]
first quarter, 61% lit; the Moon was 404,309 km away.
astronomy-engine - How far Earth has travelled since [EXACT]
95.9 orbits of the Sun — 90,156 million km, that is 117,269 return trips to the Moon; 35,040 rotations of Earth; with the Sun — 696.3 billion km around the Galactic centre, 26.9 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 176 million km away; today it is 244 million km (farther by 1.4×).
astronomy-engine; checked against JPL Horizons for 2026-09-14 - When the sky repeats [EXACT]
Mars returns to that day’s point of its orbit on August 19, 2028; Jupiter — in 2037; a full moon exactly on this date — October 30, 2031
sidereal periods: Mars 686.98 d, Jupiter 11.862 yr - How far the sky has drifted since [EXACT]
The vernal point has shifted 4,824″ since that day; the real constellations now sit 22.9° away from the astrologers’ “signs”.
precession 50.29″/yr
Other dates
Computed from the date only; nothing about you is stored.