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The sky on June 21, 2012 — as it really was

That day the Sun stood in Gemini, while the horoscope says "Cancer". The gap is 24.0° of precession.

РЫБЫОВЕНТЕЛЕЦБЛИЗНЕЦЫРАКЛЕВДЕВАВЕСЫСКОРПИОНЗМЕЕНОСЕЦСТРЕЛЕЦКОЗЕРОГВОДОЛЕЙ ♈︎♉︎♊︎♋︎♌︎♍︎♎︎♏︎♐︎♑︎♒︎♓︎ ☽–♂ 62.1°☽–♄ 91.0°☿–♂ 59.9°☿–♄ 88.8° ♃︎2° ♀︎8° ☉︎0° ☽︎21° ☿︎23° ♂︎23° ♄︎22°

Bodies on the ecliptic (noon UTC)

  • ☉︎ Sun — 90.5° · sign Cancer · constellation Gemini
  • ☽︎ Moon — 111.8° · sign Cancer · constellation Gemini
  • ☿︎ Mercury — 114.0° · sign Cancer · constellation Gemini
  • ♀︎ Venus — 68.2° · sign Gemini · constellation Taurus
  • ♂︎ Mars — 173.9° · sign Virgo · constellation Virgo
  • ♃︎ Jupiter — 62.2° · sign Gemini · constellation Taurus
  • ♄︎ Saturn — 202.8° · sign Libra · constellation Virgo
  • ☽︎ Moon 4% 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]

    new moon, 4% lit; the Moon was 395,670 km away.

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

    14.3 orbits of the Sun — 13,426 million km, that is 17,463 return trips to the Moon; 5,218 rotations of Earth; with the Sun — 103.7 billion km around the Galactic centre, 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 201 million km away; today it is 246 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 rise to maximum (32% through the cycle).

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

    Mars returns to that day’s point of its orbit on July 9, 2027; Jupiter — in 2036; 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 720″ since that day; the real constellations now sit 24° 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/ap120621.html

    NASA APOD

Other dates

2012-06-20 2012-06-22 everyone born June 21
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