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The sky on October 6, 1985 — as it really was

That day the Sun stood in Virgo, while the horoscope says "Libra". The gap is 23.7° of precession.

РЫБЫОВЕНТЕЛЕЦБЛИЗНЕЦЫРАКЛЕВДЕВАВЕСЫСКОРПИОНЗМЕЕНОСЕЦСТРЕЛЕЦКОЗЕРОГВОДОЛЕЙ ♈︎♉︎♊︎♋︎♌︎♍︎♎︎♏︎♐︎♑︎♒︎♓︎ ☽︎5° ♂︎16° ♀︎17° ☉︎13° ☿︎23° ♄︎25° ♃︎7°

Bodies on the ecliptic (noon UTC)

  • ☉︎ Sun — 193.2° · sign Libra · constellation Virgo
  • ☽︎ Moon — 95.1° · sign Cancer · constellation Gemini
  • ☿︎ Mercury — 203.2° · sign Libra · constellation Virgo
  • ♀︎ Venus — 167.6° · sign Virgo · constellation Leo
  • ♂︎ Mars — 166.7° · sign Virgo · constellation Leo
  • ♃︎ Jupiter — 307.1° · sign Aquarius · constellation Capricornus
  • ♄︎ Saturn — 235.4° · sign Scorpio · constellation Libra
  • ☽︎ Moon 57% 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.

  1. The Moon that day [EXACT]

    last quarter, 57% lit; the Moon was 397,612 km away.

    astronomy-engine
  2. How far Earth has travelled since [EXACT]

    41 orbits of the Sun — 38,527 million km, that is 50,113 return trips to the Moon; 14,974 rotations of Earth; with the Sun — 297.6 billion km around the Galactic centre, 11.5 light-days.

    29.78 km/s along the orbit; 230 km/s around the Galactic centre
  3. Mars then and now [EXACT]

    On that day Mars was 374 million km away; today it is 245 million km (closer by 1.5×).

    astronomy-engine; checked against JPL Horizons for 2026-09-14
  4. Solar cycle [ESTIMATE]

    That day fell in solar cycle 21, on the decline (91% through the cycle).

    SILSO smoothed minima
  5. When the sky repeats [EXACT]

    Mars returns to that day’s point of its orbit on February 22, 2027; Jupiter — in 2032; a full moon exactly on this date — October 5, 2055

    sidereal periods: Mars 686.98 d, Jupiter 11.862 yr
  6. How far the sky has drifted since [EXACT]

    The vernal point has shifted 2,052″ since that day; the real constellations now sit 23.7° away from the astrologers’ “signs”.

    precession 50.29″/yr

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