The sky on January 1, 1983 — as it really was
That day the Sun stood in Sagittarius, while the horoscope says "Capricorn". The gap is 23.6° of precession.
Bodies on the ecliptic (noon UTC)
- ☉︎ Sun — 280.5° · sign Capricorn · constellation Sagittarius
- ☽︎ Moon — 129.1° · sign Leo · constellation Cancer
- ☿︎ Mercury — 299.9° · sign Capricorn · constellation Capricornus
- ♀︎ Venus — 294.7° · sign Capricorn · constellation Sagittarius
- ♂︎ Mars — 317.4° · sign Aquarius · constellation Capricornus
- ♃︎ Jupiter — 241.3° · sign Sagittarius · constellation Libra
- ♄︎ Saturn — 212.9° · sign Scorpio · constellation Virgo
- ☽︎ Moon 94% 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, 94% lit; the Moon was 359,374 km away.
astronomy-engine - How far Earth has travelled since [EXACT]
43.8 orbits of the Sun — 41,123 million km, that is 53,489 return trips to the Moon; 15,982 rotations of Earth; with the Sun — 317.6 billion km around the Galactic centre, 12.3 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 305 million km away; today it is 245 million km (closer by 1.2×).
astronomy-engine; checked against JPL Horizons for 2026-09-14 - Solar cycle [ESTIMATE]
That day fell in solar cycle 21, on the decline (65% through the cycle).
SILSO smoothed minima - When the sky repeats [EXACT]
Mars returns to that day’s point of its orbit on February 22, 2028; Jupiter — in 2030; a full moon exactly on this date — December 31, 2028
sidereal periods: Mars 686.98 d, Jupiter 11.862 yr - How far the sky has drifted since [EXACT]
The vernal point has shifted 2,196″ since that day; the real constellations now sit 23.6° away from the astrologers’ “signs”.
precession 50.29″/yr
Other dates
Computed from the date only; nothing about you is stored.