The sky on June 21, 1983 — as it really was
That day the Sun stood in Taurus, while the horoscope says "Gemini". The gap is 23.6° of precession.
Bodies on the ecliptic (noon UTC)
- ☉︎ Sun — 89.6° · sign Gemini · constellation Taurus
- ☽︎ Moon — 225.2° · sign Scorpio · constellation Libra
- ☿︎ Mercury — 70.5° · sign Gemini · constellation Taurus
- ♀︎ Venus — 134.8° · sign Leo · constellation Cancer
- ♂︎ Mars — 84.7° · sign Gemini · constellation Taurus
- ♃︎ Jupiter — 243.1° · sign Sagittarius · constellation Scorpius
- ♄︎ Saturn — 207.8° · sign Libra · constellation Virgo
- ☽︎ Moon 86% 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]
waxing gibbous, 86% lit; the Moon was 388,691 km away.
astronomy-engine - How far Earth has travelled since [EXACT]
43.3 orbits of the Sun — 40,681 million km, that is 52,915 return trips to the Moon; 15,811 rotations of Earth; with the Sun — 314.2 billion km around the Galactic centre, 12.1 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 383 million km away; today it is 246 million km (closer by 1.6×).
astronomy-engine; checked against JPL Horizons for 2026-09-14 - Solar cycle [ESTIMATE]
That day fell in solar cycle 21, on the decline (70% through the cycle).
SILSO smoothed minima - When the sky repeats [EXACT]
Mars returns to that day’s point of its orbit on August 11, 2028; Jupiter — in 2030; a full moon exactly on this date — June 20, 2035
sidereal periods: Mars 686.98 d, Jupiter 11.862 yr - How far the sky has drifted since [EXACT]
The vernal point has shifted 2,160″ 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.