The sky on May 13, 2025 — as it really was
That day the Sun stood in Aries, while the horoscope says "Taurus". The gap is 24.2° of precession.
Bodies on the ecliptic (noon UTC)
- ☉︎ Sun — 53.0° · sign Taurus · constellation Aries
- ☽︎ Moon — 241.7° · sign Sagittarius · constellation Scorpius
- ☿︎ Mercury — 35.2° · sign Taurus · constellation Aries
- ♀︎ Venus — 8.6° · sign Aries · constellation Pisces
- ♂︎ Mars — 131.6° · sign Leo · constellation Cancer
- ♃︎ Jupiter — 84.0° · sign Gemini · constellation Taurus
- ♄︎ Saturn — 359.0° · sign Pisces · 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 404,181 km away.
astronomy-engine - How far Earth has travelled since [EXACT]
1.4 orbits of the Sun — 1,311 million km, that is 1,705 return trips to the Moon; 509 rotations of Earth; with the Sun — 10.1 billion km around the Galactic centre, 0.4 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 230 million km away; today it is 245 million km (farther by 1.1×).
astronomy-engine; checked against JPL Horizons for 2026-09-14 - Solar cycle [ESTIMATE]
That day fell in solar cycle 25, near maximum (52% through the cycle).
SILSO smoothed minima - When the sky repeats [EXACT]
Mars returns to that day’s point of its orbit on March 31, 2027; Jupiter — in 2037; a full moon exactly on this date — May 12, 2063
sidereal periods: Mars 686.98 d, Jupiter 11.862 yr - How far the sky has drifted since [EXACT]
The vernal point has shifted 72″ 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/ap250513.html
NASA APOD
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