The sky on January 21, 2012 — as it really was
That day the Sun stood in Capricornus, while the horoscope says "Aquarius". The gap is 24.0° of precession.
Bodies on the ecliptic (noon UTC)
- ☉︎ Sun — 300.8° · sign Aquarius · constellation Capricornus
- ☽︎ Moon — 277.7° · sign Capricorn · constellation Sagittarius
- ☿︎ Mercury — 290.0° · sign Capricorn · constellation Sagittarius
- ♀︎ Venus — 338.8° · sign Pisces · constellation Aquarius
- ♂︎ Mars — 173.1° · sign Virgo · constellation Virgo
- ♃︎ Jupiter — 31.6° · sign Taurus · constellation Aries
- ♄︎ Saturn — 209.3° · 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.
- The Moon that day [EXACT]
waning crescent, 4% lit; the Moon was 374,305 km away.
astronomy-engine - How far Earth has travelled since [EXACT]
14.7 orbits of the Sun — 13,817 million km, that is 17,972 return trips to the Moon; 5,370 rotations of Earth; with the Sun — 106.7 billion km around the Galactic centre, 4.1 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 130 million km away; today it is 246 million km (farther by 1.9×).
astronomy-engine; checked against JPL Horizons for 2026-09-14 - Solar cycle [ESTIMATE]
That day fell in solar cycle 24, on the rise to maximum (29% through the cycle).
SILSO smoothed minima - When the sky repeats [EXACT]
Mars returns to that day’s point of its orbit on February 7, 2027; Jupiter — in 2036; a full moon exactly on this date — January 21, 2038
sidereal periods: Mars 686.98 d, Jupiter 11.862 yr - 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 - Picture of the day [EXACT]
NASA Astronomy Picture of the Day for this date: apod.nasa.gov/apod/ap120121.html
NASA APOD
Other dates
Computed from the date only; nothing about you is stored.