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The sky on August 30, 2005 — as it really was

That day the Sun stood in Leo, while the horoscope says "Virgo". The gap is 23.9° of precession.

РЫБЫОВЕНТЕЛЕЦБЛИЗНЕЦЫРАКЛЕВДЕВАВЕСЫСКОРПИОНЗМЕЕНОСЕЦСТРЕЛЕЦКОЗЕРОГВОДОЛЕЙ ♈︎♉︎♊︎♋︎♌︎♍︎♎︎♏︎♐︎♑︎♒︎♓︎ ☽–♃ 87.7°☿–♃ 57.3° ♂︎16° ☽︎20° ♄︎5° ☿︎20° ☉︎7° ♀︎15° ♃︎18°

Bodies on the ecliptic (noon UTC)

  • ☉︎ Sun — 157.2° · sign Virgo · constellation Leo
  • ☽︎ Moon — 110.5° · sign Cancer · constellation Gemini
  • ☿︎ Mercury — 140.9° · sign Leo · constellation Leo
  • ♀︎ Venus — 195.8° · sign Libra · constellation Virgo
  • ♂︎ Mars — 46.5° · sign Taurus · constellation Aries
  • ♃︎ Jupiter — 198.2° · sign Libra · constellation Virgo
  • ♄︎ Saturn — 125.7° · sign Leo · constellation Cancer
  • ☽︎ Moon 16% 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 crescent, 16% lit; the Moon was 405,048 km away.

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

    21.1 orbits of the Sun — 19,826 million km, that is 25,788 return trips to the Moon; 7,705 rotations of Earth; with the Sun — 153.1 billion km around the Galactic centre, 5.9 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 100 million km away; today it is 245 million km (farther by 2.4×).

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

    That day fell in solar cycle 23, on the decline (74% through the cycle).

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

    Mars returns to that day’s point of its orbit on March 26, 2028; Jupiter — in 2029; a full moon exactly on this date — August 29, 2034

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

    The vernal point has shifted 1,044″ since that day; the real constellations now sit 23.9° away from the astrologers’ “signs”.

    precession 50.29″/yr
  7. Picture of the day [EXACT]

    NASA Astronomy Picture of the Day for this date: apod.nasa.gov/apod/ap050830.html

    NASA APOD

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