The sky on October 4, 1947 — as it really was
That day the Sun stood in Virgo, while the horoscope says "Libra". The gap is 23.1° of precession.
Bodies on the ecliptic (noon UTC)
- ☉︎ Sun — 190.4° · sign Libra · constellation Virgo
- ☽︎ Moon — 62.4° · sign Gemini · constellation Taurus
- ☿︎ Mercury — 213.8° · sign Scorpio · constellation Virgo
- ♀︎ Venus — 198.7° · sign Libra · constellation Virgo
- ♂︎ Mars — 122.0° · sign Leo · constellation Cancer
- ♃︎ Jupiter — 236.1° · sign Scorpio · constellation Libra
- ♄︎ Saturn — 139.5° · sign Leo · constellation Leo
- ☽︎ Moon 81% 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, 81% lit; the Moon was 376,146 km away.
astronomy-engine - How far Earth has travelled since [EXACT]
79 orbits of the Sun — 74,251 million km, that is 96,581 return trips to the Moon; 28,858 rotations of Earth; with the Sun — 573.5 billion km around the Galactic centre, 22.1 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 242 million km away; today it is 242 million km (farther by 1×).
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 2030; a full moon exactly on this date — October 3, 2028
sidereal periods: Mars 686.98 d, Jupiter 11.862 yr - How far the sky has drifted since [EXACT]
The vernal point has shifted 3,960″ since that day; the real constellations now sit 23.1° away from the astrologers’ “signs”.
precession 50.29″/yr
Other dates
Computed from the date only; nothing about you is stored.