The sky on June 21, 1989 — as it really was
That day the Sun stood in Gemini, while the horoscope says "Cancer". The gap is 23.7° of precession.
Bodies on the ecliptic (noon UTC)
- ☉︎ Sun — 90.1° · sign Cancer · constellation Gemini
- ☽︎ Moon — 297.2° · sign Capricorn · constellation Sagittarius
- ☿︎ Mercury — 67.6° · sign Gemini · constellation Taurus
- ♀︎ Venus — 110.5° · sign Cancer · constellation Gemini
- ♂︎ Mars — 123.1° · sign Leo · constellation Cancer
- ♃︎ Jupiter — 81.3° · sign Gemini · constellation Taurus
- ♄︎ Saturn — 281.4° · sign Capricorn · constellation Sagittarius
- ☽︎ 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 380,358 km away.
astronomy-engine - How far Earth has travelled since [EXACT]
37.3 orbits of the Sun — 35,042 million km, that is 45,580 return trips to the Moon; 13,619 rotations of Earth; with the Sun — 270.6 billion km around the Galactic centre, 10.4 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 362 million km away; today it is 246 million km (closer by 1.5×).
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 (28% through the cycle).
SILSO smoothed minima - When the sky repeats [EXACT]
Mars returns to that day’s point of its orbit on February 2, 2027; Jupiter — in 2036; 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 1,872″ 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.