The sky on June 30, 1939 — as it really was
That day the Sun stood in Gemini, while the horoscope says "Cancer". The gap is 23.0° of precession.
Bodies on the ecliptic (noon UTC)
- ☉︎ Sun — 97.8° · sign Cancer · constellation Gemini
- ☽︎ Moon — 264.4° · sign Sagittarius · constellation Ophiuchus
- ☿︎ Mercury — 120.3° · sign Leo · constellation Cancer
- ♀︎ Venus — 79.5° · sign Gemini · constellation Taurus
- ♂︎ Mars — 304.3° · sign Aquarius · constellation Capricornus
- ♃︎ Jupiter — 7.4° · sign Aries · constellation Cetus
- ♄︎ Saturn — 29.6° · sign Aries · constellation Pisces
- ☽︎ 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 396,142 km away.
astronomy-engine - How far Earth has travelled since [EXACT]
87.3 orbits of the Sun — 82,012 million km, that is 106,676 return trips to the Moon; 31,874 rotations of Earth; with the Sun — 633.4 billion km around the Galactic centre, 24.5 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 66 million km away; today it is 244 million km (farther by 3.7×).
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 23, 2027; Jupiter — in 2034.
sidereal periods: Mars 686.98 d, Jupiter 11.862 yr - How far the sky has drifted since [EXACT]
The vernal point has shifted 4,392″ since that day; the real constellations now sit 23° away from the astrologers’ “signs”.
precession 50.29″/yr
Other dates
Computed from the date only; nothing about you is stored.