The sky on April 13, 1933 — as it really was
That day the Sun stood in Pisces, while the horoscope says "Aries". The gap is 22.9° of precession.
Bodies on the ecliptic (noon UTC)
- ☉︎ Sun — 23.1° · sign Aries · constellation Pisces
- ☽︎ Moon — 243.8° · sign Sagittarius · constellation Scorpius
- ☿︎ Mercury — 357.0° · sign Pisces · constellation Pisces
- ♀︎ Venus — 21.0° · sign Aries · constellation Pisces
- ♂︎ Mars — 150.9° · sign Virgo · constellation Leo
- ♃︎ Jupiter — 164.4° · sign Virgo · constellation Leo
- ♄︎ Saturn — 314.9° · sign Aquarius · constellation Capricornus
- ☽︎ Moon 88% 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]
waning gibbous, 88% lit; the Moon was 362,635 km away.
astronomy-engine - How far Earth has travelled since [EXACT]
93.5 orbits of the Sun — 87,848 million km, that is 114,266 return trips to the Moon; 34,142 rotations of Earth; with the Sun — 678.5 billion km around the Galactic centre, 26.2 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 125 million km away; today it is 245 million km (farther by 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 29, 2027; Jupiter — in 2028; a full moon exactly on this date — April 13, 2063
sidereal periods: Mars 686.98 d, Jupiter 11.862 yr - How far the sky has drifted since [EXACT]
The vernal point has shifted 4,680″ 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.