The sky on June 21, 1958 — as it really was
That day the Sun stood in Gemini — sign and constellation agree here.
Bodies on the ecliptic (noon UTC)
- ☉︎ Sun — 89.6° · sign Gemini · constellation Gemini
- ☽︎ Moon — 141.7° · sign Leo · constellation Leo
- ☿︎ Mercury — 93.1° · sign Cancer · constellation Gemini
- ♀︎ Venus — 53.6° · sign Taurus · constellation Taurus
- ♂︎ Mars — 10.1° · sign Aries · constellation Cetus
- ♃︎ Jupiter — 201.8° · sign Libra · constellation Virgo
- ♄︎ Saturn — 261.9° · sign Sagittarius · constellation Ophiuchus
- ☽︎ Moon 19% 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, 19% lit; the Moon was 375,254 km away.
astronomy-engine - How far Earth has travelled since [EXACT]
68.3 orbits of the Sun — 64,176 million km, that is 83,475 return trips to the Moon; 24,942 rotations of Earth; with the Sun — 495.6 billion km around the Galactic centre, 19.1 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 171 million km away; today it is 246 million km (farther by 1.4×).
astronomy-engine; checked against JPL Horizons for 2026-09-14 - Solar cycle [ESTIMATE]
That day fell in solar cycle 19, on the rise to maximum (40% through the cycle).
SILSO smoothed minima - When the sky repeats [EXACT]
Mars returns to that day’s point of its orbit on January 23, 2028; Jupiter — in 2029; a full moon exactly on this date — June 20, 2035
sidereal periods: Mars 686.98 d, Jupiter 11.862 yr - How far the sky has drifted since [EXACT]
The vernal point has shifted 3,420″ since that day; the real constellations now sit 23.3° away from the astrologers’ “signs”.
precession 50.29″/yr
Other dates
Computed from the date only; nothing about you is stored.