The sky on December 3, 1990 — as it really was
That day the Sun stood in Ophiuchus, while the horoscope says "Sagittarius". The gap is 23.7° of precession.
Bodies on the ecliptic (noon UTC)
- ☉︎ Sun — 251.1° · sign Sagittarius · constellation Ophiuchus
- ☽︎ Moon — 87.8° · sign Gemini · constellation Taurus
- ☿︎ Mercury — 271.8° · sign Capricorn · constellation Sagittarius
- ♀︎ Venus — 258.9° · sign Sagittarius · constellation Ophiuchus
- ♂︎ Mars — 63.3° · sign Gemini · constellation Taurus
- ♃︎ Jupiter — 133.6° · sign Leo · constellation Cancer
- ♄︎ Saturn — 292.6° · sign Capricorn · constellation Sagittarius
- ☽︎ Moon 98% 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, 98% lit; the Moon was 357,623 km away.
astronomy-engine - How far Earth has travelled since [EXACT]
35.8 orbits of the Sun — 33,681 million km, that is 43,810 return trips to the Moon; 13,090 rotations of Earth; with the Sun — 260.1 billion km around the Galactic centre, 10 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 80 million km away; today it is 244 million km (farther by 3.1×).
astronomy-engine; checked against JPL Horizons for 2026-09-14 - Solar cycle [ESTIMATE]
That day fell in solar cycle 22, on the rise to maximum (43% through the cycle).
SILSO smoothed minima - When the sky repeats [EXACT]
Mars returns to that day’s point of its orbit on July 16, 2028; Jupiter — in 2037.
sidereal periods: Mars 686.98 d, Jupiter 11.862 yr - How far the sky has drifted since [EXACT]
The vernal point has shifted 1,800″ since that day; the real constellations now sit 23.7° away from the astrologers’ “signs”.
precession 50.29″/yr
Other dates
Computed from the date only; nothing about you is stored.