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The sky on August 7, 1986 — as it really was

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

РЫБЫОВЕНТЕЛЕЦБЛИЗНЕЦЫРАКЛЕВДЕВАВЕСЫСКОРПИОНЗМЕЕНОСЕЦСТРЕЛЕЦКОЗЕРОГВОДОЛЕЙ ♈︎♉︎♊︎♋︎♌︎♍︎♎︎♏︎♐︎♑︎♒︎♓︎ ☿–♀ 62.8°☽–♄ 88.1° ☿︎26° ☉︎14° ☽︎4° ♀︎29° ♄︎3° ♂︎11° ♃︎21°

Bodies on the ecliptic (noon UTC)

  • ☉︎ Sun — 134.7° · sign Leo · constellation Cancer
  • ☽︎ Moon — 155.0° · sign Virgo · constellation Leo
  • ☿︎ Mercury — 116.8° · sign Cancer · constellation Gemini
  • ♀︎ Venus — 179.6° · sign Virgo · constellation Virgo
  • ♂︎ Mars — 281.6° · sign Capricorn · constellation Sagittarius
  • ♃︎ Jupiter — 351.8° · sign Pisces · constellation Aquarius
  • ♄︎ Saturn — 243.1° · sign Sagittarius · constellation Scorpius
  • ☽︎ Moon 3% 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]

    new moon, 3% lit; the Moon was 389,612 km away.

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

    40.2 orbits of the Sun — 37,743 million km, that is 49,093 return trips to the Moon; 14,669 rotations of Earth; with the Sun — 291.5 billion km around the Galactic centre, 11.3 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 65 million km away; today it is 245 million km (farther by 3.8×).

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

    That day fell in solar cycle 21, on the decline (99% through the cycle).

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

    Mars returns to that day’s point of its orbit on December 24, 2027; Jupiter — in 2033; a full moon exactly on this date — August 7, 2036

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

    The vernal point has shifted 2,016″ since that day; the real constellations now sit 23.7° away from the astrologers’ “signs”.

    precession 50.29″/yr

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