The sky on April 18, 1951 — as it really was
That day the Sun stood in Pisces, while the horoscope says "Aries". The gap is 23.2° of precession.
Bodies on the ecliptic (noon UTC)
- ☉︎ Sun — 27.6° · sign Aries · constellation Pisces
- ☽︎ Moon — 163.5° · sign Virgo · constellation Leo
- ☿︎ Mercury — 37.9° · sign Taurus · constellation Aries
- ♀︎ Venus — 63.7° · sign Gemini · constellation Taurus
- ♂︎ Mars — 36.0° · sign Taurus · constellation Aries
- ♃︎ Jupiter — 359.3° · sign Pisces · constellation Pisces
- ♄︎ Saturn — 176.9° · sign Virgo · constellation Virgo
- ☽︎ Moon 86% 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, 86% lit; the Moon was 381,966 km away.
astronomy-engine - How far Earth has travelled since [EXACT]
75.5 orbits of the Sun — 70,925 million km, that is 92,254 return trips to the Moon; 27,565 rotations of Earth; with the Sun — 547.8 billion km around the Galactic centre, 21.1 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 365 million km away; today it is 243 million km (closer by 1.5×).
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 May 29, 2028; Jupiter — in 2034; a full moon exactly on this date — April 18, 2030
sidereal periods: Mars 686.98 d, Jupiter 11.862 yr - How far the sky has drifted since [EXACT]
The vernal point has shifted 3,780″ since that day; the real constellations now sit 23.2° away from the astrologers’ “signs”.
precession 50.29″/yr
Other dates
Computed from the date only; nothing about you is stored.