The sky on March 13, 1929 — as it really was
That day the Sun stood in Pisces — sign and constellation agree here.
Bodies on the ecliptic (noon UTC)
- ☉︎ Sun — 352.4° · sign Pisces · constellation Pisces
- ☽︎ Moon — 19.5° · sign Aries · constellation Pisces
- ☿︎ Mercury — 326.6° · sign Aquarius · constellation Aquarius
- ♀︎ Venus — 33.1° · sign Taurus · constellation Aries
- ♂︎ Mars — 91.0° · sign Cancer · constellation Gemini
- ♃︎ Jupiter — 39.3° · sign Taurus · constellation Aries
- ♄︎ Saturn — 269.9° · sign Sagittarius · constellation Sagittarius
- ☽︎ Moon 6% 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, 6% lit; the Moon was 374,983 km away.
astronomy-engine - How far Earth has travelled since [EXACT]
97.6 orbits of the Sun — 91,687 million km, that is 119,260 return trips to the Moon; 35,634 rotations of Earth; with the Sun — 708.1 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 176 million km away; today it is 245 million km (farther by 1.4×).
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 January 1, 2027; Jupiter — in 2036; a full moon exactly on this date — March 13, 2055
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.