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The sky on March 1, 1991 — as it really was

That day the Sun stood in Aquarius, while the horoscope says "Pisces". The gap is 23.7° of precession.

РЫБЫОВЕНТЕЛЕЦБЛИЗНЕЦЫРАКЛЕВДЕВАВЕСЫСКОРПИОНЗМЕЕНОСЕЦСТРЕЛЕЦКОЗЕРОГВОДОЛЕЙ ♈︎♉︎♊︎♋︎♌︎♍︎♎︎♏︎♐︎♑︎♒︎♓︎ ♃–♄ 177.6° ♀︎8° ♂︎13° ♃︎4° ☽︎19° ♄︎2° ☿︎9° ☉︎10°

Bodies on the ecliptic (noon UTC)

  • ☉︎ Sun — 340.4° · sign Pisces · constellation Aquarius
  • ☽︎ Moon — 169.8° · sign Virgo · constellation Leo
  • ☿︎ Mercury — 339.9° · sign Pisces · constellation Aquarius
  • ♀︎ Venus — 8.8° · sign Aries · constellation Pisces
  • ♂︎ Mars — 73.9° · sign Gemini · constellation Taurus
  • ♃︎ Jupiter — 124.9° · sign Leo · constellation Cancer
  • ♄︎ Saturn — 302.5° · sign Aquarius · constellation Capricornus
  • ☽︎ Moon 99% 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]

    full moon, 99% lit; the Moon was 377,667 km away.

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

    35.6 orbits of the Sun — 33,457 million km, that is 43,518 return trips to the Moon; 13,003 rotations of Earth; with the Sun — 258.4 billion km around the Galactic centre, 10 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 183 million km away; today it is 243 million km (farther by 1.3×).

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

    That day fell in solar cycle 22, near maximum (45% through the cycle).

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

    Mars returns to that day’s point of its orbit on November 25, 2026; Jupiter — in 2038; a full moon exactly on this date — February 28, 2029

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

    The vernal point has shifted 1,764″ since that day; the real constellations now sit 23.7° away from the astrologers’ “signs”.

    precession 50.29″/yr

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