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The sky on March 20, 1956 — as it really was

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

РЫБЫОВЕНТЕЛЕЦБЛИЗНЕЦЫРАКЛЕВДЕВАВЕСЫСКОРПИОНЗМЕЕНОСЕЦСТРЕЛЕЦКОЗЕРОГВОДОЛЕЙ ♈︎♉︎♊︎♋︎♌︎♍︎♎︎♏︎♐︎♑︎♒︎♓︎ ♀–♂ 120.6°♀–☿ 59.4°♄–☉ 117.1°♂–☿ 61.2° ♀︎14° ☽︎10° ♃︎22° ♄︎2° ♂︎13° ☿︎14° ☉︎29°

Bodies on the ecliptic (noon UTC)

  • ☉︎ Sun — 359.9° · sign Pisces · constellation Pisces
  • ☽︎ Moon — 100.1° · sign Cancer · constellation Gemini
  • ☿︎ Mercury — 344.7° · sign Pisces · constellation Aquarius
  • ♀︎ Venus — 44.2° · sign Taurus · constellation Aries
  • ♂︎ Mars — 283.5° · sign Capricorn · constellation Sagittarius
  • ♃︎ Jupiter — 142.7° · sign Leo · constellation Leo
  • ♄︎ Saturn — 242.8° · sign Sagittarius · constellation Scorpius
  • ☽︎ Moon 59% 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]

    first quarter, 59% lit; the Moon was 369,563 km away.

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

    70.5 orbits of the Sun — 66,298 million km, that is 86,236 return trips to the Moon; 25,767 rotations of Earth; with the Sun — 512 billion km around the Galactic centre, 19.8 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 19, right at the minimum (19% through the cycle).

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

    Mars returns to that day’s point of its orbit on September 9, 2027; Jupiter — in 2027; a full moon exactly on this date — March 19, 2030

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

    The vernal point has shifted 3,528″ since that day; the real constellations now sit 23.3° away from the astrologers’ “signs”.

    precession 50.29″/yr

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