Our Calculation Methods
Deep dive into the algorithms and formulas powering each fortune-telling system. Every calculation is deterministic and reproducible.
7 Calculation Systems
Each system is based on traditional formulas and deterministic algorithms.
BaZi (Four Pillars)
八字The Four Pillars of Destiny calculates your elemental constitution from the exact moment of birth using the sexagenary cycle.
Calculation Methodology
- 1.Converts birth date/time to Chinese lunar calendar
- 2.Applies Lichun (立春) adjustment - Chinese year starts Feb 4, not Jan 1
- 3.Calculates Year Pillar using sexagenary (60-year) cycle
- 4.Derives Month Pillar from solar terms (节气) and Five Tiger formula (五虎遁)
- 5.Computes Day Pillar using Julian Day Number algorithm
- 6.Determines Hour Pillar from birth hour using Five Rat formula (五鼠遁)
Key Outputs
Zi Wei Dou Shu
紫微斗数The Purple Star system is the most sophisticated Chinese astrology, plotting 14 main stars across 12 life palaces.
Calculation Methodology
- 1.Converts solar date to accurate lunar date (supports 1891-2100)
- 2.Calculates Ming Palace (命宫) from lunar month and birth hour
- 3.Determines Ming Ju (五行局) using NaYin (纳音) table
- 4.Places Zi Wei Star (紫微) based on lunar day and Ming Ju value
- 5.Positions remaining 13 main stars using traditional offset formulas
- 6.Assigns star brightness (庙/旺/得/利/平/不/陷) for each palace
Key Outputs
Pythagorean Numerology
Reduces birth date to single digits (or master numbers) to reveal life path and destiny numbers.
Calculation Methodology
- 1.Reduces month to single digit (or master number 11, 22)
- 2.Reduces day to single digit (or master number)
- 3.Reduces year to single digit (or master number)
- 4.Sums reduced components and reduces again
- 5.Preserves master numbers 11, 22, 33 without further reduction
- 6.Calculates Expression Number from full birth name
Key Outputs
Western Astrology
Tropical zodiac system determining sun sign, moon sign, and elemental balance from birth data.
Calculation Methodology
- 1.Maps birth date to tropical zodiac sign using standard cusp dates
- 2.Determines sun sign element (Fire, Earth, Air, Water)
- 3.Calculates sign quality (Cardinal, Fixed, Mutable)
- 4.Identifies planetary ruler for the sun sign
- 5.Approximates moon sign from lunar cycle
- 6.Generates compatibility profiles
Key Outputs
Enneagram
Nine-type personality system revealing core motivations, fears, and growth paths.
Calculation Methodology
- 1.Derives type from birth data patterns (deterministic assignment)
- 2.Calculates wing from adjacent types
- 3.Maps integration and disintegration paths
- 4.Identifies healthy, average, and unhealthy behaviors
- 5.Cross-references with birth element for deeper insights
Key Outputs
Tarot Birth Cards
Calculates your soul card and personality card from birth date using numerological reduction.
Calculation Methodology
- 1.Sums month + day + (sum of year digits)
- 2.Reduces sum to 1-22 range (Major Arcana)
- 3.Maps to primary soul card
- 4.Calculates secondary personality card (further reduction)
- 5.Special handling for sum of 19 (three-card spread)
- 6.Card 22 maps to The Fool (0)
Key Outputs
I-Ching
易经The Book of Changes provides wisdom through 64 hexagrams reflecting universal patterns.
Calculation Methodology
- 1.Derives hexagram from lunar date components
- 2.Maps to one of 64 hexagrams
- 3.Identifies changing lines for dynamic reading
- 4.Provides traditional interpretation and judgment
- 5.Includes image (象) and advice sections
Key Outputs
Combined Reading Strategy
Each product strategically combines 3 complementary systems. Results are cross-referenced and synthesized to provide insights no single system can offer alone.
Soul Blueprint
$19.99/mo
14 report sections
Enneagram
Core personality & motivations
5 sections
Western Astrology
Sun sign & elemental nature
4 sections
Tarot Birth Cards
Soul purpose & archetypes
4 sections
Cross-System Synthesis
Correlates fire/earth/air/water elements with Enneagram types; aligns Tarot archetypes with personality patterns.
Destiny Code
$29.99/mo
14 report sections
BaZi
Day Master & Five Elements
6 sections
Numerology
Life Path & career timing
4 sections
Enneagram
Business personality style
3 sections
Cross-System Synthesis
Maps Day Master elements to career paths; correlates Life Path with business timing; aligns Enneagram with leadership style.
Star Destiny
$49.99/mo
13 report sections
Zi Wei Dou Shu
12 palaces & 14 main stars
5 sections
BaZi
Four Pillars & Day Master
4 sections
I-Ching
Hexagram guidance
3 sections
Cross-System Synthesis
Cross-references Ming Palace stars with Day Master; synthesizes Zi Wei timing with BaZi luck cycles; I-Ching provides actionable guidance.
Technical Implementation
Deterministic Guarantee
- Same birth data always produces identical results
- No random number generators used
- All formulas based on traditional source texts
- Verified against 11+ celebrity charts
Libraries & Data Sources
- lunar-calendar- Gregorian to Chinese lunar conversion (1891-2100)
- Julian Day- Astronomical day count for BaZi accuracy
- NaYin Table- Traditional 60-combination element mapping
- Brightness Table- 14 stars x 12 positions = 168 brightness values