The sky on June 21, 2006 — as it really was
That day the Sun stood in Taurus, while the horoscope says "Gemini". The gap is 23.9° of precession.
Bodies on the ecliptic (noon UTC)
- ☉︎ Sun — 90.0° · sign Gemini · constellation Taurus
- ☽︎ Moon — 37.9° · sign Taurus · constellation Aries
- ☿︎ Mercury — 114.9° · sign Cancer · constellation Gemini
- ♀︎ Venus — 57.0° · sign Taurus · constellation Taurus
- ♂︎ Mars — 130.7° · sign Leo · constellation Cancer
- ♃︎ Jupiter — 219.3° · sign Scorpio · constellation Libra
- ♄︎ Saturn — 129.1° · sign Leo · constellation Cancer
- ☽︎ Moon 19% 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.
- The Moon that day [EXACT]
waning crescent, 19% lit; the Moon was 375,082 km away.
astronomy-engine - How far Earth has travelled since [EXACT]
20.3 orbits of the Sun — 19,066 million km, that is 24,799 return trips to the Moon; 7,410 rotations of Earth; with the Sun — 147.3 billion km around the Galactic centre, 5.7 light-days.
29.78 km/s along the orbit; 230 km/s around the Galactic centre - Mars then and now [EXACT]
On that day Mars was 344 million km away; today it is 246 million km (closer by 1.4×).
astronomy-engine; checked against JPL Horizons for 2026-09-14 - Solar cycle [ESTIMATE]
That day fell in solar cycle 23, on the decline (80% through the cycle).
SILSO smoothed minima - When the sky repeats [EXACT]
Mars returns to that day’s point of its orbit on February 28, 2027; Jupiter — in 2030; a full moon exactly on this date — June 20, 2035
sidereal periods: Mars 686.98 d, Jupiter 11.862 yr - How far the sky has drifted since [EXACT]
The vernal point has shifted 1,008″ since that day; the real constellations now sit 24° away from the astrologers’ “signs”.
precession 50.29″/yr - Picture of the day [EXACT]
NASA Astronomy Picture of the Day for this date: apod.nasa.gov/apod/ap060621.html
NASA APOD
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