The eight methods compared
Eight systems, one person. They disagree because they were built in different places and centuries to answer different questions, and because two of them do not read your birth at all.
Eight readings of one person
One birth, 15 June 1990, 07:30, Hong Kong, run through all eight:
| Method | Reads | Says |
|---|---|---|
| BaZi 八字 | Year, month, day and hour of birth, as stems and branches | Day Master 辛, yin Metal |
| Zi Wei Dou Shu 紫微斗數 | The lunar date and hour, placed on twelve palaces | Life Palace 寅 with 七杀 (Seven Killings), Earth 5 bureau |
| Vedic astrology 吠陀占星 | Sidereal planetary positions and the rising degree | Lagna in Gemini, its lord Mercury in the 12th house |
| Western astrology 西洋占星 | Tropical planetary positions and the rising degree | Ascendant in Cancer |
| Human Design 人類圖 | The birth moment, plus a second calculation shortly before it | Projector, profile 2/4, single definition |
| Numerology 數字學 | The birth date, reduced arithmetically | Life Path 4, carrying karmic debt 13 |
| Qi Men Dun Jia 奇門遁甲 | The moment a question is asked, not the birth | An hour plate in the 陽盤 rotating-plate tradition |
| Da Liu Ren 大六壬 | The moment a question is asked, not the birth | A 三傳 sequence derived by the 《六壬大全》 method |
Six read the birth. Two read the moment a question is asked, so their results describe a question rather than a person. That split matters more than any argument about which tradition runs deeper.
Why they disagree
The clearest case sits between the two astrologies. Western measures from the March equinox and Vedic from the fixed stars, and the two zero points have drifted about 24 degrees apart. For this birth that is the difference between a Cancer and a Gemini ascendant. Same sky, same instant, different answer, and neither is a mistake.
The rest disagree for a simpler reason. They were built in different places and centuries to answer different questions, and there is no dictionary between elements, planets, palaces, gates and numbers.
Meridian casts every applicable method from one set of birth details, highlights the themes that recur across them, and keeps the disagreements visible rather than averaging them into something comfortable.
Recurrence is a signal rather than a verdict. When systems with nothing in common point the same way, that does not make either true. It does mean the reading is not an artefact of one method's machinery.
Every pairing
- BaZi or Zi Wei Dou Shu
- BaZi or Vedic astrology
- BaZi or Western astrology
- BaZi or Human Design
- BaZi or Numerology
- BaZi or Qi Men Dun Jia
- BaZi or Da Liu Ren
- Zi Wei Dou Shu or Vedic astrology
- Zi Wei Dou Shu or Western astrology
- Zi Wei Dou Shu or Human Design
- Zi Wei Dou Shu or Numerology
- Zi Wei Dou Shu or Qi Men Dun Jia
- Zi Wei Dou Shu or Da Liu Ren
- Vedic astrology or Western astrology
- Vedic astrology or Human Design
- Vedic astrology or Numerology
- Vedic astrology or Qi Men Dun Jia
- Vedic astrology or Da Liu Ren
- Western astrology or Human Design
- Western astrology or Numerology
- Western astrology or Qi Men Dun Jia
- Western astrology or Da Liu Ren
- Human Design or Numerology
- Human Design or Qi Men Dun Jia
- Human Design or Da Liu Ren
- Numerology or Qi Men Dun Jia
- Numerology or Da Liu Ren
- Qi Men Dun Jia or Da Liu Ren
Cast your chart in every method
Both headline results computed by Meridian's engines on 2 August 2026 from one identical birth: 15 June 1990, 07:30, Hong Kong. The engines are deterministic, so the same input returns the same chart.
This page compares how two systems calculate. It does not interpret a chart and is not advice.