People · sourced chart
Henri Poincaré
Mathematician and philosopher · France · 1854–1912
Birth date sourced. Birth time unknown.Moon sign undetermined. The Moon crossed from Taurus into Gemini during that day. Everything below uses only what the complete civil day settles.
The day, read honestly
Five of the nine placements whose signs are settled fall in earth signs — at least half of what the unknown hour leaves certain. Earth weights a chart toward the material and the durable — what can be built, kept, and relied on.
Positions at 12:00 civil time in Nancy—a reference instant, not a birth time. No houses, rising sign, angles, or sect were computed.
Where the Sun actually stood
At the noon reference the Sun sits 8.8° into Taurus — the first decan, which the old scheme hands to Venus. Same sign, different decan, different chart.
The fast planets
Day to day the chart speaks through Mercury in Aries (13.3°), Venus in Pisces (23.2°), Mars in Virgo (0.4°): thought that arrives already in motion, attraction that works by atmosphere, effort banked steadily until it tells.
The angles that hold
Mars and Saturn hold the closest angle here — a square, 1.4° wide. Right angles are where the scheme puts its grit. A square asks two functions to work in a mode neither would have chosen. Behind it, Mars trine Pluto at 2.0°, and Uranus sextile Neptune at 3.0° — both still well inside the orbs this site uses. The unknown hour cannot unmake any of this: every aspect named survived all twenty-five samples of the day.
The standing structure
Mercury makes no major aspect that survives the day; the old reading gives such a planet autonomy — it acts alone, sometimes loudly.
The classical map
The dignity table, which predates the outer planets and only ever spoke for seven, marks two placements here. Venus in Pisces at 23.2° is in exaltation — the tradition’s honoured-guest placement, working at its best; Jupiter in Capricorn at 27.1° is in fall — the tradition’s uphill placement, strength earned rather than given. The table describes circumstance rather than quality — a planet in detriment is inconvenienced, not diminished.
The shape of the whole
Balance, counted honestly across the 9 placements whose signs hold for the whole day: elements earth 5, water 2, fire 1, air 1; modalities mutable 4, fixed 3, cardinal 2. Earth weights a chart toward the material and the durable — what can be built, kept, and relied on. Every body was moving forward that day — no apparent reversals anywhere in the chart.
The Moon is genuinely open
The Moon crossed from Taurus into Gemini during that day at the birthplace, travelling 12.1° between one midnight and the next. Half the day belongs to each sign, and the split falls at an unrecorded hour — so this page holds the Moon as a genuine unknown.
Where this comes fromSources, revisions, and exactly what this chart assumes
- Source article
- Henri Poincaré · revision 1365634085
- Wikidata
- Q81082 · revision 2522915761
- Retrieved
- 2026-07-26T18:47:50.947Z
- Birth date
- 1854-04-29 · day precision · proleptic-gregorian
- Birthplace
- Nancy, France · Q40898
- Coordinates
- 48.6928, 6.1836 · from Nancy
- Reference instant
- 1854-04-29T11:50:39.000Z · noon civil time, not a birth time
- Omitted
- Rising sign, houses, angles, and sect—all require a birth time.
- Unknown-time range
- Moon travelled 12.11° · Moon sign undetermined. The Moon crossed from Taurus into Gemini during that day.
- Engine
- astronomy-engine (repository dependency) · @zodiacs/engine/internal/math
- Portrait
- Unknown author · public domain · Wikimedia Commons
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