The sky on September 10, 1978 — as it really was
That day the Sun stood in Leo, while the horoscope says "Virgo". The gap is 23.6° of precession.
Bodies on the ecliptic (noon UTC)
- ☉︎ Sun — 167.4° · sign Virgo · constellation Leo
- ☽︎ Moon — 262.1° · sign Sagittarius · constellation Ophiuchus
- ☿︎ Mercury — 151.0° · sign Virgo · constellation Leo
- ♀︎ Venus — 212.9° · sign Scorpio · constellation Virgo
- ♂︎ Mars — 203.8° · sign Libra · constellation Virgo
- ♃︎ Jupiter — 121.0° · sign Leo · constellation Cancer
- ♄︎ Saturn — 155.7° · sign Virgo · constellation Leo
- ☽︎ Moon 54% 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]
first quarter, 54% lit; the Moon was 371,713 km away.
astronomy-engine - How far Earth has travelled since [EXACT]
48.1 orbits of the Sun — 45,174 million km, that is 58,760 return trips to the Moon; 17,557 rotations of Earth; with the Sun — 348.9 billion km around the Galactic centre, 13.5 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 337 million km away; today it is 244 million km (closer by 1.4×).
astronomy-engine; checked against JPL Horizons for 2026-09-14 - Solar cycle [ESTIMATE]
That day fell in solar cycle 21, on the rise to maximum (24% through the cycle).
SILSO smoothed minima - When the sky repeats [EXACT]
Mars returns to that day’s point of its orbit on August 5, 2027; Jupiter — in 2037; a full moon exactly on this date — September 10, 2041
sidereal periods: Mars 686.98 d, Jupiter 11.862 yr - How far the sky has drifted since [EXACT]
The vernal point has shifted 2,412″ 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.