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The sky on February 18, 1968 — as it really was

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

РЫБЫОВЕНТЕЛЕЦБЛИЗНЕЦЫРАКЛЕВДЕВАВЕСЫСКОРПИОНЗМЕЕНОСЕЦСТРЕЛЕЦКОЗЕРОГВОДОЛЕЙ ♈︎♉︎♊︎♋︎♌︎♍︎♎︎♏︎♐︎♑︎♒︎♓︎ ♃–☉ 177.8°☽–☿ 118.7° ♂︎1° ♄︎9° ♃︎1° ☽︎24° ♀︎27° ☿︎22° ☉︎28°

Bodies on the ecliptic (noon UTC)

  • ☉︎ Sun — 328.9° · sign Aquarius · constellation Aquarius
  • ☽︎ Moon — 204.1° · sign Libra · constellation Virgo
  • ☿︎ Mercury — 322.8° · sign Aquarius · constellation Capricornus
  • ♀︎ Venus — 297.9° · sign Capricorn · constellation Sagittarius
  • ♂︎ Mars — 1.0° · sign Aries · constellation Pisces
  • ♃︎ Jupiter — 151.1° · sign Virgo · constellation Leo
  • ♄︎ Saturn — 9.8° · sign Aries · constellation Cetus
  • ☽︎ Moon 79% 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, 79% lit; the Moon was 368,779 km away.

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

    58.6 orbits of the Sun — 55,098 million km, that is 71,668 return trips to the Moon; 21,414 rotations of Earth; with the Sun — 425.5 billion km around the Galactic centre, 16.4 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 323 million km away; today it is 244 million km (closer by 1.3×).

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

    That day fell in solar cycle 20, on the rise to maximum (30% through the cycle).

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

    Mars returns to that day’s point of its orbit on April 26, 2028; Jupiter — in 2027; a full moon exactly on this date — February 18, 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 2,952″ since that day; the real constellations now sit 23.4° away from the astrologers’ “signs”.

    precession 50.29″/yr

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