The sky on May 1, 1931 — as it really was
That day the Sun stood in Aries, while the horoscope says "Taurus". The gap is 22.9° of precession.
Bodies on the ecliptic (noon UTC)
- ☉︎ Sun — 40.1° · sign Taurus · constellation Aries
- ☽︎ Moon — 210.3° · sign Scorpio · constellation Virgo
- ☿︎ Mercury — 38.4° · sign Taurus · constellation Aries
- ♀︎ Venus — 6.5° · sign Aries · constellation Cetus
- ♂︎ Mars — 130.7° · sign Leo · constellation Cancer
- ♃︎ Jupiter — 104.9° · sign Cancer · constellation Gemini
- ♄︎ Saturn — 293.3° · sign Capricorn · constellation Sagittarius
- ☽︎ Moon 99% 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]
full moon, 99% lit; the Moon was 363,882 km away.
astronomy-engine - How far Earth has travelled since [EXACT]
95.4 orbits of the Sun — 89,685 million km, that is 116,656 return trips to the Moon; 34,856 rotations of Earth; with the Sun — 692.7 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 196 million km away; today it is 244 million km (farther by 1.2×).
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 April 3, 2027; Jupiter — in 2038; a full moon exactly on this date — May 1, 2045
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.