The sky on October 31, 1939 — as it really was
That day the Sun stood in Libra, while the horoscope says "Scorpio". The gap is 23.0° of precession.
Bodies on the ecliptic (noon UTC)
- ☉︎ Sun — 217.2° · sign Scorpio · constellation Libra
- ☽︎ Moon — 75.6° · sign Gemini · constellation Taurus
- ☿︎ Mercury — 239.0° · sign Scorpio · constellation Scorpius
- ♀︎ Venus — 231.7° · sign Scorpio · constellation Libra
- ♂︎ Mars — 318.3° · sign Aquarius · constellation Capricornus
- ♃︎ Jupiter — 359.9° · sign Pisces · constellation Pisces
- ♄︎ Saturn — 27.1° · sign Aries · constellation Pisces
- ☽︎ Moon 89% 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]
waning gibbous, 89% lit; the Moon was 382,650 km away.
astronomy-engine - How far Earth has travelled since [EXACT]
86.9 orbits of the Sun — 81,697 million km, that is 106,266 return trips to the Moon; 31,752 rotations of Earth; with the Sun — 631 billion km around the Galactic centre, 24.4 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 121 million km away; today it is 244 million km (farther by 2×).
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 March 25, 2028; Jupiter — in 2034.
sidereal periods: Mars 686.98 d, Jupiter 11.862 yr - How far the sky has drifted since [EXACT]
The vernal point has shifted 4,356″ since that day; the real constellations now sit 23° away from the astrologers’ “signs”.
precession 50.29″/yr
Other dates
Computed from the date only; nothing about you is stored.