The sky on January 13, 1947 — as it really was
That day the Sun stood in Sagittarius, while the horoscope says "Capricorn". The gap is 23.1° of precession.
Bodies on the ecliptic (noon UTC)
- ☉︎ Sun — 292.5° · sign Capricorn · constellation Sagittarius
- ☽︎ Moon — 195.2° · sign Libra · constellation Virgo
- ☿︎ Mercury — 286.3° · sign Capricorn · constellation Sagittarius
- ♀︎ Venus — 246.5° · sign Sagittarius · constellation Ophiuchus
- ♂︎ Mars — 290.7° · sign Capricorn · constellation Sagittarius
- ♃︎ Jupiter — 232.4° · sign Scorpio · constellation Libra
- ♄︎ Saturn — 126.5° · sign Leo · constellation Cancer
- ☽︎ Moon 56% 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]
last quarter, 56% lit; the Moon was 389,511 km away.
astronomy-engine - How far Earth has travelled since [EXACT]
79.7 orbits of the Sun — 74,924 million km, that is 97,455 return trips to the Moon; 29,119 rotations of Earth; with the Sun — 578.7 billion km around the Galactic centre, 22.3 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 359 million km away; today it is 245 million km (closer by 1.5×).
astronomy-engine; checked against JPL Horizons for 2026-09-14 - When the sky repeats [EXACT]
Mars returns to that day’s point of its orbit on November 29, 2027; Jupiter — in 2030; a full moon exactly on this date — January 13, 2036
sidereal periods: Mars 686.98 d, Jupiter 11.862 yr - How far the sky has drifted since [EXACT]
The vernal point has shifted 3,996″ since that day; the real constellations now sit 23.1° away from the astrologers’ “signs”.
precession 50.29″/yr
Other dates
Computed from the date only; nothing about you is stored.