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The sky on January 29, 1997 — as it really was

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

РЫБЫОВЕНТЕЛЕЦБЛИЗНЕЦЫРАКЛЕВДЕВАВЕСЫСКОРПИОНЗМЕЕНОСЕЦСТРЕЛЕЦКОЗЕРОГВОДОЛЕЙ ♈︎♉︎♊︎♋︎♌︎♍︎♎︎♏︎♐︎♑︎♒︎♓︎ ♄–♂ 177.8°♄–♃ 61.5°☽–☿ 92.4° ♄︎3° ♂︎5° ☽︎13° ☿︎15° ♀︎24° ♃︎1° ☉︎9°

Bodies on the ecliptic (noon UTC)

  • ☉︎ Sun — 309.6° · sign Aquarius · constellation Capricornus
  • ☽︎ Moon — 193.3° · sign Libra · constellation Virgo
  • ☿︎ Mercury — 285.6° · sign Capricorn · constellation Sagittarius
  • ♀︎ Venus — 294.1° · sign Capricorn · constellation Sagittarius
  • ♂︎ Mars — 185.6° · sign Libra · constellation Virgo
  • ♃︎ Jupiter — 301.8° · sign Aquarius · constellation Capricornus
  • ♄︎ Saturn — 3.4° · sign Aries · constellation Pisces
  • ☽︎ Moon 72% 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]

    waning gibbous, 72% lit; the Moon was 399,980 km away.

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

    29.7 orbits of the Sun — 27,892 million km, that is 36,280 return trips to the Moon; 10,840 rotations of Earth; with the Sun — 215.4 billion km around the Galactic centre, 8.3 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 135 million km away; today it is 245 million km (farther by 1.8×).

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

    That day fell in solar cycle 23, right at the minimum (4% through the cycle).

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

    Mars returns to that day’s point of its orbit on March 5, 2027; Jupiter — in 2033; a full moon exactly on this date — January 29, 2040

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

    The vernal point has shifted 1,476″ since that day; the real constellations now sit 23.8° 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/ap970129.html

    NASA APOD

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