Love Compatibility (Zodiac, Chinese & Numerology)

Relationships are multidimensional systems. While simple calculators rely on name matching or basic sun signs, this analytical engine employs a Quad-Factor Algorithm to assess compatibility. It treats the partnership as a composite signal derived from four distinct data streams: Solar intent (Western Zodiac), cyclical habits (Chinese Zodiac), life trajectory (Numerology), and physiological synchronization (Biorhythms).

Accuracy is paramount. Unlike standard tools that approximate the Chinese Zodiac by year alone, this system utilizes a Lunar Ephemeris Lookup. This ensures that individuals born in January or February are assigned their correct Lunar sign based on the exact date of the Lunar New Year for their birth year. This eliminates the common "false sign" error found in 90% of web-based calculators.

The tool also calculates the Biorhythmic Phase Delta. By measuring the offset between the Physical (23-day), Emotional (28-day), and Intellectual (33-day) cycles of two individuals, we quantify how often their high-energy and low-energy periods overlap. This provides a pragmatic view of day-to-day energetic harmony, distinct from the abstract archetypes of astrology.

The Biorhythm Compatibility B is calculated by determining the phase difference φ between two individuals for a given cycle period P.

The Total Synergy Score S_total is a weighted summation of four normalized vectors, where weights w correspond to the predictive reliability of each system.