The sky on April 21, 1954 — as it really was
That day the Sun stood in Aries, while the horoscope says "Taurus". The gap is 23.2° of precession.
Bodies on the ecliptic (noon UTC)
- ☉︎ Sun — 30.8° · sign Taurus · constellation Aries
- ☽︎ Moon — 246.6° · sign Sagittarius · constellation Scorpius
- ☿︎ Mercury — 13.2° · sign Aries · constellation Pisces
- ♀︎ Venus — 50.9° · sign Taurus · constellation Aries
- ♂︎ Mars — 273.0° · sign Capricorn · constellation Sagittarius
- ♃︎ Jupiter — 83.5° · sign Gemini · constellation Taurus
- ♄︎ Saturn — 216.4° · sign Scorpio · constellation Libra
- ☽︎ Moon 91% 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, 91% lit; the Moon was 401,937 km away.
astronomy-engine - How far Earth has travelled since [EXACT]
72.5 orbits of the Sun — 68,092 million km, that is 88,569 return trips to the Moon; 26,464 rotations of Earth; with the Sun — 525.9 billion km around the Galactic centre, 20.3 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 116 million km away; today it is 245 million km (farther by 2.1×).
astronomy-engine; checked against JPL Horizons for 2026-09-14 - Solar cycle [ESTIMATE]
That day fell in solar cycle 19, right at the minimum (1% through the cycle).
SILSO smoothed minima - When the sky repeats [EXACT]
Mars returns to that day’s point of its orbit on August 28, 2027; Jupiter — in 2037; a full moon exactly on this date — April 20, 2027
sidereal periods: Mars 686.98 d, Jupiter 11.862 yr - How far the sky has drifted since [EXACT]
The vernal point has shifted 3,636″ 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.