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The sky on March 10, 2018 — as it really was

That day the Sun stood in Aquarius, while the horoscope says "Pisces". The gap is 24.1° of precession.

РЫБЫОВЕНТЕЛЕЦБЛИЗНЕЦЫРАКЛЕВДЕВАВЕСЫСКОРПИОНЗМЕЕНОСЕЦСТРЕЛЕЦКОЗЕРОГВОДОЛЕЙ ♈︎♉︎♊︎♋︎♌︎♍︎♎︎♏︎♐︎♑︎♒︎♓︎ ☿–♄ 88.9° ♀︎4° ☿︎6° ♃︎23° ♂︎25° ☽︎1° ♄︎7° ☉︎19°

Bodies on the ecliptic (noon UTC)

  • ☉︎ Sun — 349.9° · sign Pisces · constellation Aquarius
  • ☽︎ Moon — 271.1° · sign Capricorn · constellation Sagittarius
  • ☿︎ Mercury — 6.8° · sign Aries · constellation Pisces
  • ♀︎ Venus — 4.4° · sign Aries · constellation Pisces
  • ♂︎ Mars — 265.8° · sign Sagittarius · constellation Ophiuchus
  • ♃︎ Jupiter — 233.2° · sign Scorpio · constellation Libra
  • ♄︎ Saturn — 278.0° · sign Capricorn · constellation Sagittarius
  • ☽︎ Moon 40% 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, 40% lit; the Moon was 404,173 km away.

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

    8.6 orbits of the Sun — 8,055 million km, that is 10,478 return trips to the Moon; 3,131 rotations of Earth; with the Sun — 62.2 billion km around the Galactic centre, 2.4 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 196 million km away; today it is 245 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 24, on the decline (84% through the cycle).

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

    Mars returns to that day’s point of its orbit on August 5, 2027; Jupiter — in 2030; a full moon exactly on this date — March 10, 2058

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

    The vernal point has shifted 432″ since that day; the real constellations now sit 24.1° 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/ap180310.html

    NASA APOD

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