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The sky on August 22, 1970 — as it really was

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

РЫБЫОВЕНТЕЛЕЦБЛИЗНЕЦЫРАКЛЕВДЕВАВЕСЫСКОРПИОНЗМЕЕНОСЕЦСТРЕЛЕЦКОЗЕРОГВОДОЛЕЙ ♈︎♉︎♊︎♋︎♌︎♍︎♎︎♏︎♐︎♑︎♒︎♓︎ ♄–♂ 90.1°♄–☿ 122.9°☉–♃ 62.0° ☽︎12° ♄︎22° ♂︎22° ☉︎28° ☿︎25° ♀︎14° ♃︎0°

Bodies on the ecliptic (noon UTC)

  • ☉︎ Sun — 149.0° · sign Leo · constellation Leo
  • ☽︎ Moon — 42.2° · sign Taurus · constellation Aries
  • ☿︎ Mercury — 175.4° · sign Virgo · constellation Virgo
  • ♀︎ Venus — 194.8° · sign Libra · constellation Virgo
  • ♂︎ Mars — 142.5° · sign Leo · constellation Leo
  • ♃︎ Jupiter — 211.0° · sign Scorpio · constellation Virgo
  • ♄︎ Saturn — 52.5° · sign Taurus · constellation Taurus
  • ☽︎ Moon 64% 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]

    last quarter, 64% lit; the Moon was 377,839 km away.

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

    56.1 orbits of the Sun — 52,744 million km, that is 68,606 return trips to the Moon; 20,499 rotations of Earth; with the Sun — 407.4 billion km around the Galactic centre, 15.7 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 398 million km away; today it is 243 million km (closer by 1.6×).

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

    That day fell in solar cycle 20, near maximum (52% through the cycle).

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

    Mars returns to that day’s point of its orbit on January 24, 2027; Jupiter — in 2029; a full moon exactly on this date — August 22, 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 2,808″ since that day; the real constellations now sit 23.5° away from the astrologers’ “signs”.

    precession 50.29″/yr

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