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The sky on July 22, 1985 — as it really was

That day the Sun stood in Cancer — sign and constellation agree here.

РЫБЫОВЕНТЕЛЕЦБЛИЗНЕЦЫРАКЛЕВДЕВАВЕСЫСКОРПИОНЗМЕЕНОСЕЦСТРЕЛЕЦКОЗЕРОГВОДОЛЕЙ ♈︎♉︎♊︎♋︎♌︎♍︎♎︎♏︎♐︎♑︎♒︎♓︎ ♂–☽ 58.7°☉–☽ 57.4°☿–♄ 87.4° ♀︎17° ♂︎28° ☉︎29° ☿︎24° ☽︎26° ♄︎21° ♃︎13°

Bodies on the ecliptic (noon UTC)

  • ☉︎ Sun — 119.6° · sign Cancer · constellation Cancer
  • ☽︎ Moon — 177.0° · sign Virgo · constellation Virgo
  • ☿︎ Mercury — 144.1° · sign Leo · constellation Leo
  • ♀︎ Venus — 77.7° · sign Gemini · constellation Taurus
  • ♂︎ Mars — 118.3° · sign Cancer · constellation Cancer
  • ♃︎ Jupiter — 313.7° · sign Aquarius · constellation Capricornus
  • ♄︎ Saturn — 231.5° · sign Scorpio · constellation Libra
  • ☽︎ Moon 23% 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]

    waxing crescent, 23% lit; the Moon was 372,312 km away.

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

    41.2 orbits of the Sun — 38,722 million km, that is 50,366 return trips to the Moon; 15,049 rotations of Earth; with the Sun — 299.1 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 396 million km away; today it is 245 million km (closer by 1.6×).

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

    That day fell in solar cycle 21, on the decline (89% through the cycle).

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

    Mars returns to that day’s point of its orbit on December 8, 2026; Jupiter — in 2032; a full moon exactly on this date — July 22, 2043

    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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