The sky on December 13, 1935 — as it really was
That day the Sun stood in Ophiuchus, while the horoscope says "Sagittarius". The gap is 23.0° of precession.
Bodies on the ecliptic (noon UTC)
- ☉︎ Sun — 260.6° · sign Sagittarius · constellation Ophiuchus
- ☽︎ Moon — 121.5° · sign Leo · constellation Cancer
- ☿︎ Mercury — 262.3° · sign Sagittarius · constellation Ophiuchus
- ♀︎ Venus — 215.5° · sign Scorpio · constellation Virgo
- ♂︎ Mars — 304.9° · sign Aquarius · constellation Capricornus
- ♃︎ Jupiter — 247.6° · sign Sagittarius · constellation Ophiuchus
- ♄︎ Saturn — 334.6° · sign Pisces · constellation Aquarius
- ☽︎ Moon 88% 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, 88% lit; the Moon was 391,985 km away.
astronomy-engine - How far Earth has travelled since [EXACT]
90.8 orbits of the Sun — 85,342 million km, that is 111,007 return trips to the Moon; 33,168 rotations of Earth; with the Sun — 659.1 billion km around the Galactic centre, 25.4 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 284 million km away; today it is 245 million km (closer by 1.2×).
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 February 10, 2028; Jupiter — in 2030; a full moon exactly on this date — December 13, 2046
sidereal periods: Mars 686.98 d, Jupiter 11.862 yr - How far the sky has drifted since [EXACT]
The vernal point has shifted 4,572″ 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.