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The sky on December 13, 1994 — as it really was

That day the Sun stood in Ophiuchus, while the horoscope says "Sagittarius". The gap is 23.8° of precession.

РЫБЫОВЕНТЕЛЕЦБЛИЗНЕЦЫРАКЛЕВДЕВАВЕСЫСКОРПИОНЗМЕЕНОСЕЦСТРЕЛЕЦКОЗЕРОГВОДОЛЕЙ ♈︎♉︎♊︎♋︎♌︎♍︎♎︎♏︎♐︎♑︎♒︎♓︎ ☽–♂ 118.7°♂–♃ 90.6°♀–♄ 117.4° ☽︎1° ♂︎0° ♀︎9° ♃︎0° ☿︎20° ☉︎21° ♄︎6°

Bodies on the ecliptic (noon UTC)

  • ☉︎ Sun — 261.3° · sign Sagittarius · constellation Ophiuchus
  • ☽︎ Moon — 31.5° · sign Taurus · constellation Aries
  • ☿︎ Mercury — 260.9° · sign Sagittarius · constellation Ophiuchus
  • ♀︎ Venus — 219.3° · sign Scorpio · constellation Libra
  • ♂︎ Mars — 150.2° · sign Virgo · constellation Leo
  • ♃︎ Jupiter — 240.9° · sign Sagittarius · constellation Libra
  • ♄︎ Saturn — 336.7° · sign Pisces · constellation Aquarius
  • ☽︎ Moon 82% 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 gibbous, 82% lit; the Moon was 404,537 km away.

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

    31.8 orbits of the Sun — 29,894 million km, that is 38,884 return trips to the Moon; 11,618 rotations of Earth; with the Sun — 230.9 billion km around the Galactic centre, 8.9 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 148 million km away; today it is 245 million km (farther by 1.7×).

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

    That day fell in solar cycle 22, on the decline (84% through the cycle).

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

    Mars returns to that day’s point of its orbit on December 4, 2026; Jupiter — in 2030; a full moon exactly on this date — December 13, 2046

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

    The vernal point has shifted 1,584″ since that day; the real constellations now sit 23.8° away from the astrologers’ “signs”.

    precession 50.29″/yr

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