The sky on April 13, 1943 — as it really was
That day the Sun stood in Pisces, while the horoscope says "Aries". The gap is 23.1° of precession.
Bodies on the ecliptic (noon UTC)
- ☉︎ Sun — 22.7° · sign Aries · constellation Pisces
- ☽︎ Moon — 122.1° · sign Leo · constellation Cancer
- ☿︎ Mercury — 32.7° · sign Taurus · constellation Aries
- ♀︎ Venus — 57.2° · sign Taurus · constellation Taurus
- ♂︎ Mars — 327.0° · sign Aquarius · constellation Aquarius
- ♃︎ Jupiter — 106.8° · sign Cancer · constellation Gemini
- ♄︎ Saturn — 69.3° · sign Gemini · constellation Taurus
- ☽︎ Moon 58% 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]
first quarter, 58% lit; the Moon was 403,946 km away.
astronomy-engine - How far Earth has travelled since [EXACT]
83.5 orbits of the Sun — 78,453 million km, that is 102,046 return trips to the Moon; 30,491 rotations of Earth; with the Sun — 605.9 billion km around the Galactic centre, 23.4 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 256 million km away; today it is 245 million km (closer by 1×).
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 2, 2027; Jupiter — in 2038; 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 4,176″ since that day; the real constellations now sit 23.1° away from the astrologers’ “signs”.
precession 50.29″/yr
Other dates
Computed from the date only; nothing about you is stored.