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The sky on October 9, 1963 — as it really was

That day the Sun stood in Virgo, while the horoscope says "Libra". The gap is 23.4° of precession.

РЫБЫОВЕНТЕЛЕЦБЛИЗНЕЦЫРАКЛЕВДЕВАВЕСЫСКОРПИОНЗМЕЕНОСЕЦСТРЕЛЕЦКОЗЕРОГВОДОЛЕЙ ♈︎♉︎♊︎♋︎♌︎♍︎♎︎♏︎♐︎♑︎♒︎♓︎ ♃–☽ 87.2°♃–☉ 178.8°♃–♄ 57.7°☉–♄ 121.1°♂–♄ 88.1° ♃︎14° ☽︎11° ☿︎28° ☉︎15° ♀︎26° ♂︎18° ♄︎16°

Bodies on the ecliptic (noon UTC)

  • ☉︎ Sun — 195.5° · sign Libra · constellation Virgo
  • ☽︎ Moon — 101.5° · sign Cancer · constellation Gemini
  • ☿︎ Mercury — 178.3° · sign Virgo · constellation Virgo
  • ♀︎ Venus — 206.3° · sign Libra · constellation Virgo
  • ♂︎ Mars — 228.5° · sign Scorpio · constellation Libra
  • ♃︎ Jupiter — 14.3° · sign Aries · constellation Pisces
  • ♄︎ Saturn — 316.6° · sign Aquarius · constellation Capricornus
  • ☽︎ 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.

  1. The Moon that day [EXACT]

    last quarter, 54% lit; the Moon was 375,157 km away.

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

    63 orbits of the Sun — 59,198 million km, that is 77,000 return trips to the Moon; 23,007 rotations of Earth; with the Sun — 457.2 billion km around the Galactic centre, 17.7 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 334 million km away; today it is 244 million km (closer by 1.4×).

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

    That day fell in solar cycle 19, 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 September 20, 2027; Jupiter — in 2034.

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

    The vernal point has shifted 3,168″ since that day; the real constellations now sit 23.4° away from the astrologers’ “signs”.

    precession 50.29″/yr

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