The sky on November 21, 2007 — as it really was
That day the Sun stood in Libra, while the horoscope says "Scorpio". The gap is 24.0° of precession.
Bodies on the ecliptic (noon UTC)
- ☉︎ Sun — 238.8° · sign Scorpio · constellation Libra
- ☽︎ Moon — 14.9° · sign Aries · constellation Pisces
- ☿︎ Mercury — 224.4° · sign Scorpio · constellation Libra
- ♀︎ Venus — 193.9° · sign Libra · constellation Virgo
- ♂︎ Mars — 102.2° · sign Cancer · constellation Gemini
- ♃︎ Jupiter — 263.9° · sign Sagittarius · constellation Ophiuchus
- ♄︎ Saturn — 157.8° · sign Virgo · constellation Leo
- ☽︎ Moon 86% 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]
waxing gibbous, 86% lit; the Moon was 362,925 km away.
astronomy-engine - How far Earth has travelled since [EXACT]
18.9 orbits of the Sun — 17,733 million km, that is 23,066 return trips to the Moon; 6,892 rotations of Earth; with the Sun — 137 billion km around the Galactic centre, 5.3 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 99 million km away; today it is 246 million km (farther by 2.5×).
astronomy-engine; checked against JPL Horizons for 2026-09-14 - Solar cycle [ESTIMATE]
That day fell in solar cycle 23, on the decline (92% through the cycle).
SILSO smoothed minima - When the sky repeats [EXACT]
Mars returns to that day’s point of its orbit on July 30, 2028; Jupiter — in 2031; a full moon exactly on this date — November 21, 2029
sidereal periods: Mars 686.98 d, Jupiter 11.862 yr - How far the sky has drifted since [EXACT]
The vernal point has shifted 936″ 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/ap071121.html
NASA APOD
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