The sky on May 21, 1929 — as it really was
That day the Sun stood in Taurus — sign and constellation agree here.
Bodies on the ecliptic (noon UTC)
- ☉︎ Sun — 59.9° · sign Taurus · constellation Taurus
- ☽︎ Moon — 217.2° · sign Scorpio · constellation Libra
- ☿︎ Mercury — 80.6° · sign Gemini · constellation Taurus
- ♀︎ Venus — 23.4° · sign Aries · constellation Pisces
- ♂︎ Mars — 124.6° · sign Leo · constellation Cancer
- ♃︎ Jupiter — 54.9° · sign Taurus · constellation Taurus
- ♄︎ Saturn — 269.2° · sign Sagittarius · constellation Sagittarius
- ☽︎ Moon 96% 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, 96% lit; the Moon was 398,180 km away.
astronomy-engine - How far Earth has travelled since [EXACT]
97.4 orbits of the Sun — 91,508 million km, that is 119,028 return trips to the Moon; 35,565 rotations of Earth; with the Sun — 706.7 billion km around the Galactic centre, 27.3 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 273 million km away; today it is 246 million km (closer by 1.1×).
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 March 11, 2027; Jupiter — in 2036.
sidereal periods: Mars 686.98 d, Jupiter 11.862 yr - How far the sky has drifted since [EXACT]
The vernal point has shifted 4,896″ since that day; the real constellations now sit 22.9° away from the astrologers’ “signs”.
precession 50.29″/yr
Other dates
Computed from the date only; nothing about you is stored.