The precise and honest horoscope.

The method.

Real sky, real houses. The Kalendom engine runs on Swiss Ephemeris positions—the same library professional astrologers use—and real Placidus house cusps derived from your exact birth time and place. Nothing is looked up from a template; every chart is your chart.

A rulebook with receipts. Of everything astrology contains, one tradition exists to answer a single question—when. The scoring rulebook encodes that transit-timing tradition, roughly four centuries of it, and every entry carries its provenance: which directiona rule pushes in is cited from the canon, while the size of the number is ours, marked as calibration rather than doctrine. No rule exists because it "felt right", and none pretends a tuned magnitude came from Ptolemy.

Versioned determinism.The rulebook is versioned, and a day's score is reproducible: same birth data, same date, same rulebook version—the same result, forever. When the rulebook changes, the version changes with it. There is no hidden adjustment layer and no randomness anywhere in the scoring path.

Honesty rules, enforced in code. When the birth time is unknown, the chart degrades openly—houses and rising sign are left out and the interface says so, rather than guessing. Curves never invent a peak between real days. Tied days share their rank instead of receiving a false ordering. And a quiet day is reported as a quiet day— our astrology engine admits when nothing notable is happening, and when it misses, that stays visible in your backtests too.