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The sky on June 21, 2013 — as it really was

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

РЫБЫОВЕНТЕЛЕЦБЛИЗНЕЦЫРАКЛЕВДЕВАВЕСЫСКОРПИОНЗМЕЕНОСЕЦСТРЕЛЕЦКОЗЕРОГВОДОЛЕЙ ♈︎♉︎♊︎♋︎♌︎♍︎♎︎♏︎♐︎♑︎♒︎♓︎ ♂︎14° ♃︎28° ☉︎0° ☿︎22° ♀︎22° ♄︎5° ☽︎2°

Bodies on the ecliptic (noon UTC)

  • ☉︎ Sun — 90.3° · sign Cancer · constellation Taurus
  • ☽︎ Moon — 242.2° · sign Sagittarius · constellation Scorpius
  • ☿︎ Mercury — 112.1° · sign Cancer · constellation Gemini
  • ♀︎ Venus — 112.5° · sign Cancer · constellation Gemini
  • ♂︎ Mars — 74.9° · sign Gemini · constellation Taurus
  • ♃︎ Jupiter — 89.0° · sign Gemini · constellation Taurus
  • ♄︎ Saturn — 215.0° · sign Scorpio · constellation Virgo
  • ☽︎ Moon 94% 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]

    waxing gibbous, 94% lit; the Moon was 360,661 km away.

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

    13.3 orbits of the Sun — 12,487 million km, that is 16,242 return trips to the Moon; 4,853 rotations of Earth; with the Sun — 96.4 billion km around the Galactic centre, 3.7 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 368 million km away; today it is 246 million km (closer by 1.5×).

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

    That day fell in solar cycle 24, on the rise to maximum (41% through the cycle).

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

    Mars returns to that day’s point of its orbit on July 8, 2028; Jupiter — in 2037; a full moon exactly on this date — June 20, 2035

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

    The vernal point has shifted 648″ 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/ap130621.html

    NASA APOD

Other dates

2013-06-20 2013-06-22 everyone born June 21
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