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The sky on November 17, 2017 — as it really was

That day the Sun stood in Libra, while the horoscope says "Scorpio". The gap is 24.1° of precession.

РЫБЫОВЕНТЕЛЕЦБЛИЗНЕЦЫРАКЛЕВДЕВАВЕСЫСКОРПИОНЗМЕЕНОСЕЦСТРЕЛЕЦКОЗЕРОГВОДОЛЕЙ ♈︎♉︎♊︎♋︎♌︎♍︎♎︎♏︎♐︎♑︎♒︎♓︎ ♂–☿ 59.9° ♂︎16° ♃︎8° ♀︎12° ☽︎14° ☉︎25° ☿︎16° ♄︎26°

Bodies on the ecliptic (noon UTC)

  • ☉︎ Sun — 235.3° · sign Scorpio · constellation Libra
  • ☽︎ Moon — 224.3° · sign Scorpio · constellation Libra
  • ☿︎ Mercury — 256.2° · sign Sagittarius · constellation Ophiuchus
  • ♀︎ Venus — 222.6° · sign Scorpio · constellation Libra
  • ♂︎ Mars — 196.2° · sign Libra · constellation Virgo
  • ♃︎ Jupiter — 218.2° · sign Scorpio · constellation Libra
  • ♄︎ Saturn — 266.3° · sign Sagittarius · constellation Ophiuchus
  • ☽︎ Moon 1% 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, 1% lit; the Moon was 399,721 km away.

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

    8.9 orbits of the Sun — 8,346 million km, that is 10,856 return trips to the Moon; 3,244 rotations of Earth; with the Sun — 64.5 billion km around the Galactic centre, 2.5 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 345 million km away; today it is 245 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 24, on the decline (81% through the cycle).

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

    Mars returns to that day’s point of its orbit on April 14, 2027; Jupiter — in 2029; a full moon exactly on this date — November 17, 2032

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

    The vernal point has shifted 432″ since that day; the real constellations now sit 24.1° away from the astrologers’ “signs”.

    precession 50.29″/yr
  7. Picture of the day [EXACT]

    NASA Astronomy Picture of the Day for this date: apod.nasa.gov/apod/ap171117.html

    NASA APOD

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