The sky on May 20, 1972 — as it really was
That day the Sun stood in Taurus — sign and constellation agree here.
Bodies on the ecliptic (noon UTC)
- ☉︎ Sun — 59.6° · sign Taurus · constellation Taurus
- ☽︎ Moon — 154.7° · sign Virgo · constellation Leo
- ☿︎ Mercury — 42.7° · sign Taurus · constellation Aries
- ♀︎ Venus — 93.9° · sign Cancer · constellation Gemini
- ♂︎ Mars — 95.1° · sign Cancer · constellation Gemini
- ♃︎ Jupiter — 277.3° · sign Capricorn · constellation Sagittarius
- ♄︎ Saturn — 68.6° · sign Gemini · constellation Taurus
- ☽︎ Moon 55% 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]
first quarter, 55% lit; the Moon was 393,584 km away.
astronomy-engine - How far Earth has travelled since [EXACT]
54.4 orbits of the Sun — 51,103 million km, that is 66,471 return trips to the Moon; 19,861 rotations of Earth; with the Sun — 394.7 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 350 million km away; today it is 244 million km (closer by 1.4×).
astronomy-engine; checked against JPL Horizons for 2026-09-14 - Solar cycle [ESTIMATE]
That day fell in solar cycle 20, on the decline (67% through the cycle).
SILSO smoothed minima - When the sky repeats [EXACT]
Mars returns to that day’s point of its orbit on December 5, 2026; Jupiter — in 2031; a full moon exactly on this date — May 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 2,736″ 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.