The sky on May 31, 1928 — 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 — 69.8° · sign Gemini · constellation Taurus
- ☽︎ Moon — 217.1° · sign Scorpio · constellation Libra
- ☿︎ Mercury — 93.0° · sign Cancer · constellation Gemini
- ♀︎ Venus — 61.3° · sign Gemini · constellation Taurus
- ♂︎ Mars — 11.0° · sign Aries · constellation Pisces
- ♃︎ Jupiter — 29.2° · sign Aries · constellation Pisces
- ♄︎ Saturn — 256.3° · sign Sagittarius · constellation Ophiuchus
- ☽︎ Moon 92% 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, 92% lit; the Moon was 405,785 km away.
astronomy-engine - How far Earth has travelled since [EXACT]
98.3 orbits of the Sun — 92,427 million km, that is 120,222 return trips to the Moon; 35,922 rotations of Earth; with the Sun — 713.8 billion km around the Galactic centre, 27.6 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 240 million km away; today it is 243 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 February 6, 2028; Jupiter — in 2035; a full moon exactly on this date — May 30, 2045
sidereal periods: Mars 686.98 d, Jupiter 11.862 yr - How far the sky has drifted since [EXACT]
The vernal point has shifted 4,932″ 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.