The sky on June 6, 1931 — as it really was
That day the Sun stood in Taurus, while the horoscope says "Gemini". The gap is 22.9° of precession.
Bodies on the ecliptic (noon UTC)
- ☉︎ Sun — 74.8° · sign Gemini · constellation Taurus
- ☽︎ Moon — 325.5° · sign Aquarius · constellation Capricornus
- ☿︎ Mercury — 52.5° · sign Taurus · constellation Taurus
- ♀︎ Venus — 49.8° · sign Taurus · constellation Aries
- ♂︎ Mars — 147.8° · sign Leo · constellation Leo
- ♃︎ Jupiter — 111.3° · sign Cancer · constellation Gemini
- ♄︎ Saturn — 292.4° · sign Capricorn · constellation Sagittarius
- ☽︎ Moon 67% 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, 67% lit; the Moon was 400,700 km away.
astronomy-engine - How far Earth has travelled since [EXACT]
95.3 orbits of the Sun — 89,592 million km, that is 116,535 return trips to the Moon; 34,820 rotations of Earth; with the Sun — 691.9 billion km around the Galactic centre, 26.7 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 243 million km away; today it is 244 million km (farther by 1×).
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 May 9, 2027; Jupiter — in 2038.
sidereal periods: Mars 686.98 d, Jupiter 11.862 yr - How far the sky has drifted since [EXACT]
The vernal point has shifted 4,788″ since that day; the real constellations now sit 22.9° away from the astrologers’ “signs”.
precession 50.29″/yr
Other dates
Computed from the date only; nothing about you is stored.