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The sky on March 13, 1964 — as it really was

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

РЫБЫОВЕНТЕЛЕЦБЛИЗНЕЦЫРАКЛЕВДЕВАВЕСЫСКОРПИОНЗМЕЕНОСЕЦСТРЕЛЕЦКОЗЕРОГВОДОЛЕЙ ♈︎♉︎♊︎♋︎♌︎♍︎♎︎♏︎♐︎♑︎♒︎♓︎ ♃︎23° ♀︎6° ♄︎28° ☽︎15° ♂︎17° ☉︎22° ☿︎23°

Bodies on the ecliptic (noon UTC)

  • ☉︎ Sun — 352.9° · sign Pisces · constellation Pisces
  • ☽︎ Moon — 345.3° · sign Pisces · constellation Aquarius
  • ☿︎ Mercury — 353.1° · sign Pisces · constellation Aquarius
  • ♀︎ Venus — 36.7° · sign Taurus · constellation Aries
  • ♂︎ Mars — 347.5° · sign Pisces · constellation Aquarius
  • ♃︎ Jupiter — 23.0° · sign Aries · constellation Pisces
  • ♄︎ Saturn — 328.8° · sign Aquarius · constellation Aquarius
  • ☽︎ 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 376,301 km away.

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

    62.6 orbits of the Sun — 58,793 million km, that is 76,474 return trips to the Moon; 22,850 rotations of Earth; with the Sun — 454.1 billion km around the Galactic centre, 17.5 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 354 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 19, on the decline (95% through the cycle).

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

    Mars returns to that day’s point of its orbit on February 23, 2028; Jupiter — in 2035; a full moon exactly on this date — March 13, 2055

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

    The vernal point has shifted 3,132″ since that day; the real constellations now sit 23.4° away from the astrologers’ “signs”.

    precession 50.29″/yr

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