The sky on August 13, 1972 — as it really was
That day the Sun stood in Leo — sign and constellation agree here.
Bodies on the ecliptic (noon UTC)
- ☉︎ Sun — 140.8° · sign Leo · constellation Leo
- ☽︎ Moon — 191.6° · sign Libra · constellation Virgo
- ☿︎ Mercury — 131.6° · sign Leo · constellation Cancer
- ♀︎ Venus — 95.8° · sign Cancer · constellation Gemini
- ♂︎ Mars — 149.0° · sign Leo · constellation Leo
- ♃︎ Jupiter — 268.7° · sign Sagittarius · constellation Sagittarius
- ♄︎ Saturn — 78.4° · sign Gemini · constellation Taurus
- ☽︎ 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 398,402 km away.
astronomy-engine - How far Earth has travelled since [EXACT]
54.1 orbits of the Sun — 50,881 million km, that is 66,183 return trips to the Moon; 19,775 rotations of Earth; with the Sun — 393 billion km around the Galactic centre, 15.2 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 398 million km away; today it is 245 million km (closer by 1.6×).
astronomy-engine; checked against JPL Horizons for 2026-09-14 - Solar cycle [ESTIMATE]
That day fell in solar cycle 20, on the decline (69% through the cycle).
SILSO smoothed minima - When the sky repeats [EXACT]
Mars returns to that day’s point of its orbit on February 28, 2027; Jupiter — in 2031; a full moon exactly on this date — August 13, 2030
sidereal periods: Mars 686.98 d, Jupiter 11.862 yr - How far the sky has drifted since [EXACT]
The vernal point has shifted 2,700″ since that day; the real constellations now sit 23.5° away from the astrologers’ “signs”.
precession 50.29″/yr
Other dates
Computed from the date only; nothing about you is stored.