The sky on September 17, 1945 — as it really was
That day the Sun stood in Virgo — sign and constellation agree here.
Bodies on the ecliptic (noon UTC)
- ☉︎ Sun — 174.2° · sign Virgo · constellation Virgo
- ☽︎ Moon — 296.5° · sign Capricorn · constellation Sagittarius
- ☿︎ Mercury — 161.6° · sign Virgo · constellation Leo
- ♀︎ Venus — 141.3° · sign Leo · constellation Leo
- ♂︎ Mars — 95.6° · sign Cancer · constellation Gemini
- ♃︎ Jupiter — 184.9° · sign Libra · constellation Virgo
- ♄︎ Saturn — 112.7° · sign Cancer · constellation Gemini
- ☽︎ Moon 77% 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 gibbous, 77% lit; the Moon was 382,598 km away.
astronomy-engine - How far Earth has travelled since [EXACT]
81.1 orbits of the Sun — 76,171 million km, that is 99,078 return trips to the Moon; 29,604 rotations of Earth; with the Sun — 588.3 billion km around the Galactic centre, 22.7 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 196 million km away; today it is 243 million km (farther by 1.2×).
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 June 20, 2028; Jupiter — in 2028; a full moon exactly on this date — September 17, 2054
sidereal periods: Mars 686.98 d, Jupiter 11.862 yr - How far the sky has drifted since [EXACT]
The vernal point has shifted 4,068″ 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.