The sky on June 23, 1929 — as it really was
That day the Sun stood in Gemini, while the horoscope says "Cancer". The gap is 22.9° of precession.
Bodies on the ecliptic (noon UTC)
- ☉︎ Sun — 91.5° · sign Cancer · constellation Gemini
- ☽︎ Moon — 285.9° · sign Capricorn · constellation Sagittarius
- ☿︎ Mercury — 74.0° · sign Gemini · constellation Taurus
- ♀︎ Venus — 46.0° · sign Taurus · constellation Aries
- ♂︎ Mars — 143.5° · sign Leo · constellation Leo
- ♃︎ Jupiter — 62.5° · sign Gemini · constellation Taurus
- ♄︎ Saturn — 266.9° · sign Sagittarius · constellation Sagittarius
- ☽︎ Moon 98% 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, 98% lit; the Moon was 405,993 km away.
astronomy-engine - How far Earth has travelled since [EXACT]
97.3 orbits of the Sun — 91,427 million km, that is 118,922 return trips to the Moon; 35,533 rotations of Earth; with the Sun — 706.1 billion km around the Galactic centre, 27.3 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 311 million km away; today it is 244 million km (closer by 1.3×).
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 13, 2027; Jupiter — in 2036; a full moon exactly on this date — June 23, 2032
sidereal periods: Mars 686.98 d, Jupiter 11.862 yr - How far the sky has drifted since [EXACT]
The vernal point has shifted 4,896″ 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.