NUMBERS · HEXAGRAM
One birthday,
different numbers
Numerology has several calculation methods, so one birthday can produce different numbers. We show four side by side without selecting a correct one, and also calculate Plum Blossom numerology hexagrams.
SIDE BY SIDE
Calculation results
Birthday numbers (four methods)
| Method | Value | What the method describes |
|---|
Name numbers
| Table | Value | Note |
|---|
Plum Blossom numerology hexagram
These are values determined by calculation rules. We do not interpret personality, fortunes or compatibility.
What rules were used?
Birthday numbers (numerology)
Encyclopaedia Britannica describes numerology as assigning numbers to names and birth dates, without specifying a formula. Practitioner books and websites differ. We show four methods: separately reduce month/day/year then add, add all digits, keep 11/22 separate following a 1917 text, and keep day/month/year separate in the Chaldean approach.
Name numbers
The Pythagorean table assigns A–I 1–9, J–R 1–9 and S–Z 1–8. The Chaldean table omits 9. Some letters in our original Chaldean scan are illegible, so names containing unconfirmed letters do not receive a Chaldean value.
Plum Blossom numerology hexagram
Volume 1 of Mei Hua Yi Shu assigns the year+month+day remainder modulo 8 to the upper trigram, adds the hour for the lower trigram, and uses the total modulo 6 for the moving line. Trigram numbers are Qian 1, Dui 2, Li 3, Zhen 4, Xun 5, Kan 6, Gen 7 and Kun 8. The year uses branch numbers, and month/day use the lunar calendar. Hexagram names come from Wikisource's Zhou Yi table.
What was and was not verified
- The two examples in the original text (Chen year, lunar month 12/day 17, Shen hour; Si year, month 3/day 16, Mao hour) were reproduced exactly.
- Examples in each source book or website were also reproduced for the four numerology methods.
- Plum Blossom numerology traditionally uses the moment of divination. Applying it to birth is our choice, not a natal-chart tradition.
- The original does not specify whether the year's branch changes at Lunar New Year or Beginning of Spring. Both hexagrams are shown when the boundaries differ.
- No academic standard defining numerology formulas was found; the sources are practitioner materials.
- F, G, J, K and M were illegible in the original Chaldean scan.