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The sky on October 14, 1981 — as it really was

That day the Sun stood in Virgo, while the horoscope says "Libra". The gap is 23.6° of precession.

РЫБЫОВЕНТЕЛЕЦБЛИЗНЕЦЫРАКЛЕВДЕВАВЕСЫСКОРПИОНЗМЕЕНОСЕЦСТРЕЛЕЦКОЗЕРОГВОДОЛЕЙ ♈︎♉︎♊︎♋︎♌︎♍︎♎︎♏︎♐︎♑︎♒︎♓︎ ☽︎4° ♂︎26° ♄︎13° ♃︎20° ☉︎21° ☿︎29° ♀︎6°

Bodies on the ecliptic (noon UTC)

  • ☉︎ Sun — 201.1° · sign Libra · constellation Virgo
  • ☽︎ Moon — 34.6° · sign Taurus · constellation Cetus
  • ☿︎ Mercury — 209.6° · sign Libra · constellation Virgo
  • ♀︎ Venus — 246.2° · sign Sagittarius · constellation Scorpius
  • ♂︎ Mars — 146.1° · sign Leo · constellation Leo
  • ♃︎ Jupiter — 200.8° · sign Libra · constellation Virgo
  • ♄︎ Saturn — 193.9° · sign Libra · constellation Virgo
  • ☽︎ Moon 98% 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]

    full moon, 98% lit; the Moon was 360,753 km away.

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

    45 orbits of the Sun — 42,265 million km, that is 54,975 return trips to the Moon; 16,426 rotations of Earth; with the Sun — 326.4 billion km around the Galactic centre, 12.6 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 296 million km away; today it is 245 million km (closer by 1.2×).

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

    That day fell in solar cycle 21, near maximum (54% through the cycle).

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

    Mars returns to that day’s point of its orbit on December 5, 2026; Jupiter — in 2028; a full moon exactly on this date — October 14, 2065

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

    The vernal point has shifted 2,232″ since that day; the real constellations now sit 23.6° away from the astrologers’ “signs”.

    precession 50.29″/yr

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