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The sky on August 20, 1992 — as it really was

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

РЫБЫОВЕНТЕЛЕЦБЛИЗНЕЦЫРАКЛЕВДЕВАВЕСЫСКОРПИОНЗМЕЕНОСЕЦСТРЕЛЕЦКОЗЕРОГВОДОЛЕЙ ♈︎♉︎♊︎♋︎♌︎♍︎♎︎♏︎♐︎♑︎♒︎♓︎ ☽–♀ 119.6°☽–♃ 122.3°☽–♄ 92.5°♂–♀ 90.0°♂–♃ 92.8°♂–♄ 122.1° ☽︎16° ♂︎16° ☿︎9° ☉︎27° ♀︎16° ♃︎19° ♄︎14°

Bodies on the ecliptic (noon UTC)

  • ☉︎ Sun — 147.7° · sign Leo · constellation Leo
  • ☽︎ Moon — 46.7° · sign Taurus · constellation Aries
  • ☿︎ Mercury — 129.2° · sign Leo · constellation Cancer
  • ♀︎ Venus — 166.3° · sign Virgo · constellation Leo
  • ♂︎ Mars — 76.3° · sign Gemini · constellation Taurus
  • ♃︎ Jupiter — 169.1° · sign Virgo · constellation Leo
  • ♄︎ Saturn — 314.2° · sign Aquarius · constellation Capricornus
  • ☽︎ Moon 60% 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, 60% lit; the Moon was 388,937 km away.

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

    34.1 orbits of the Sun — 32,070 million km, that is 41,715 return trips to the Moon; 12,464 rotations of Earth; with the Sun — 247.7 billion km around the Galactic centre, 9.6 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 209 million km away; today it is 244 million km (farther by 1.2×).

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

    That day fell in solar cycle 22, on the decline (60% through the cycle).

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

    Mars returns to that day’s point of its orbit on May 16, 2028; Jupiter — in 2028; a full moon exactly on this date — August 20, 2062

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

    The vernal point has shifted 1,692″ since that day; the real constellations now sit 23.8° away from the astrologers’ “signs”.

    precession 50.29″/yr

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