The sky on April 13, 2024 — as it really was
That day the Sun stood in Pisces, while the horoscope says "Aries". The gap is 24.2° of precession.
Bodies on the ecliptic (noon UTC)
- ☉︎ Sun — 24.0° · sign Aries · constellation Pisces
- ☽︎ Moon — 86.8° · sign Gemini · constellation Auriga
- ☿︎ Mercury — 21.4° · sign Aries · constellation Pisces
- ♀︎ Venus — 10.3° · sign Aries · constellation Cetus
- ♂︎ Mars — 346.7° · sign Pisces · constellation Aquarius
- ♃︎ Jupiter — 50.1° · sign Taurus · constellation Aries
- ♄︎ Saturn — 345.0° · sign Pisces · constellation Aquarius
- ☽︎ Moon 27% 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 crescent, 27% lit; the Moon was 382,819 km away.
astronomy-engine - How far Earth has travelled since [EXACT]
2.5 orbits of the Sun — 2,327 million km, that is 3,027 return trips to the Moon; 904 rotations of Earth; with the Sun — 18 billion km around the Galactic centre, 0.7 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 306 million km away; today it is 245 million km (closer by 1.2×).
astronomy-engine; checked against JPL Horizons for 2026-09-14 - Solar cycle [ESTIMATE]
That day fell in solar cycle 25, on the rise to maximum (42% through the cycle).
SILSO smoothed minima - When the sky repeats [EXACT]
Mars returns to that day’s point of its orbit on January 17, 2028; Jupiter — in 2036; 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 108″ since that day; the real constellations now sit 24.2° away from the astrologers’ “signs”.
precession 50.29″/yr - Picture of the day [EXACT]
NASA Astronomy Picture of the Day for this date: apod.nasa.gov/apod/ap240413.html
NASA APOD
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