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The sky on March 18, 2023 — as it really was

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

РЫБЫОВЕНТЕЛЕЦБЛИЗНЕЦЫРАКЛЕВДЕВАВЕСЫСКОРПИОНЗМЕЕНОСЕЦСТРЕЛЕЦКОЗЕРОГВОДОЛЕЙ ♈︎♉︎♊︎♋︎♌︎♍︎♎︎♏︎♐︎♑︎♒︎♓︎ ♃–☽ 62.7°♀–♄ 60.6°♂–☉ 89.1°♂–☿ 88.0° ♃︎15° ♀︎1° ♂︎26° ☽︎13° ♄︎1° ☉︎27° ☿︎28°

Bodies on the ecliptic (noon UTC)

  • ☉︎ Sun — 357.6° · sign Pisces · constellation Pisces
  • ☽︎ Moon — 313.2° · sign Aquarius · constellation Capricornus
  • ☿︎ Mercury — 358.6° · sign Pisces · constellation Pisces
  • ♀︎ Venus — 31.9° · sign Taurus · constellation Aries
  • ♂︎ Mars — 86.7° · sign Gemini · constellation Taurus
  • ♃︎ Jupiter — 15.9° · sign Aries · constellation Pisces
  • ♄︎ Saturn — 331.3° · sign Pisces · constellation Aquarius
  • ☽︎ Moon 14% 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, 14% lit; the Moon was 363,585 km away.

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

    3.6 orbits of the Sun — 3,339 million km, that is 4,343 return trips to the Moon; 1,298 rotations of Earth; with the Sun — 25.8 billion km around the Galactic centre, 1 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 197 million km away; today it is 244 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 25, on the rise to maximum (31% through the cycle).

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

    Mars returns to that day’s point of its orbit on December 21, 2026; Jupiter — in 2035; a full moon exactly on this date — March 17, 2041

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

    The vernal point has shifted 180″ since that day; the real constellations now sit 24.2° 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/ap230318.html

    NASA APOD

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