The sky on July 13, 1938 — 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 — 110.4° · sign Cancer · constellation Gemini
- ☽︎ Moon — 300.0° · sign Capricorn · constellation Capricornus
- ☿︎ Mercury — 131.1° · sign Leo · constellation Cancer
- ♀︎ Venus — 149.1° · sign Leo · constellation Leo
- ♂︎ Mars — 113.9° · sign Cancer · constellation Gemini
- ♃︎ Jupiter — 331.5° · sign Pisces · constellation Aquarius
- ♄︎ Saturn — 17.8° · 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 405,408 km away.
astronomy-engine - How far Earth has travelled since [EXACT]
88.2 orbits of the Sun — 82,915 million km, that is 107,850 return trips to the Moon; 32,225 rotations of Earth; with the Sun — 640.4 billion km around the Galactic centre, 24.7 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 395 million km away; today it is 245 million km (closer by 1.6×).
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 December 6, 2026; Jupiter — in 2033.
sidereal periods: Mars 686.98 d, Jupiter 11.862 yr - How far the sky has drifted since [EXACT]
The vernal point has shifted 4,428″ 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.