The sky on August 21, 1937 — as it really was
That day the Sun stood in Leo — sign and constellation agree here.
Bodies on the ecliptic (noon UTC)
- ☉︎ Sun — 148.0° · sign Leo · constellation Leo
- ☽︎ Moon — 321.5° · sign Aquarius · constellation Capricornus
- ☿︎ Mercury — 175.1° · sign Virgo · constellation Virgo
- ♀︎ Venus — 108.9° · sign Cancer · constellation Gemini
- ♂︎ Mars — 246.0° · sign Sagittarius · constellation Scorpius
- ♃︎ Jupiter — 288.4° · sign Capricorn · constellation Sagittarius
- ♄︎ Saturn — 4.1° · sign Aries · constellation Pisces
- ☽︎ Moon 100% 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]
full moon, 100% lit; the Moon was 385,916 km away.
astronomy-engine - How far Earth has travelled since [EXACT]
89.1 orbits of the Sun — 83,753 million km, that is 108,940 return trips to the Moon; 32,551 rotations of Earth; with the Sun — 646.9 billion km around the Galactic centre, 25 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 128 million km away; today it is 246 million km (farther by 1.9×).
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 December 2, 2027; Jupiter — in 2032; a full moon exactly on this date — August 21, 2032
sidereal periods: Mars 686.98 d, Jupiter 11.862 yr - How far the sky has drifted since [EXACT]
The vernal point has shifted 4,464″ since that day; the real constellations now sit 23° away from the astrologers’ “signs”.
precession 50.29″/yr
Other dates
Computed from the date only; nothing about you is stored.