The sky on December 17, 1945 — as it really was
That day the Sun stood in Ophiuchus, while the horoscope says "Sagittarius". The gap is 23.1° of precession.
Bodies on the ecliptic (noon UTC)
- ☉︎ Sun — 265.2° · sign Sagittarius · constellation Ophiuchus
- ☽︎ Moon — 63.1° · sign Gemini · constellation Taurus
- ☿︎ Mercury — 246.9° · sign Sagittarius · constellation Scorpius
- ♀︎ Venus — 254.2° · sign Sagittarius · constellation Ophiuchus
- ♂︎ Mars — 122.1° · sign Leo · constellation Cancer
- ♃︎ Jupiter — 202.9° · sign Libra · constellation Virgo
- ♄︎ Saturn — 113.4° · sign Cancer · constellation Gemini
- ☽︎ Moon 96% 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]
full moon, 96% lit; the Moon was 360,628 km away.
astronomy-engine - How far Earth has travelled since [EXACT]
80.8 orbits of the Sun — 75,937 million km, that is 98,773 return trips to the Moon; 29,513 rotations of Earth; with the Sun — 586.5 billion km around the Galactic centre, 22.6 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 104 million km away; today it is 243 million km (farther by 2.3×).
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 November 2, 2026; Jupiter — in 2028; a full moon exactly on this date — December 16, 2032
sidereal periods: Mars 686.98 d, Jupiter 11.862 yr - How far the sky has drifted since [EXACT]
The vernal point has shifted 4,068″ 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.