METHOD & SOURCES / REVIEWED 13 SEPTEMBER 2026
NumberSeason uses a stated convention within modern Western numerology. The formulas have practitioner sources; that is different from scientific evidence that a reading predicts your life.
OUR CALCULATION CONVENTION / VERSION 1
Reduce the birth month, day and year separately, retaining 11, 22 or 33 if reached. Add those results and reduce again with the same rule. We show master results as 11/2, 22/4 or 33/6.
15 May 1990 → 5 + 6 + 1 = 12 → 3
The component method is documented by Numerology.com and Hans Decoz. We do not claim it is the only numerology tradition.
Add the birth month, birth day and target calendar year, then repeatedly sum the digits to 1–9. The birth year is not part of this formula.
15 May, for 2026 → 5 + 15 + 2026 = 2046 → 12 → 3
Source: Decoz’s calculation guide. Our year runs January–December; it changes on January 1.
Add the Personal Year to the calendar month number, then reduce to 1–9. Recalculate the Personal Year first when crossing January. Master numbers are reduced for both years and months.
September 2026 → 3 + 9 = 12 → 3
January 2027 → 4 + 1 = 5
Source: Decoz’s Personal Month explanation, including the January transition and single-digit convention.
FROM NUMBERS TO WORDS
We use conventional associations as a starting point: 1 initiative, 2 cooperation, 3 expression, 4 structure, 5 exploration, 6 care, 7 reflection, 8 agency and 9 completion. See Decoz’s single-digit overview and master-number discussion.
The profiles, annual suggestions, monthly advice and actions in this site are original NumberSeason editorial content. We do not reproduce other sites’ paid readings or forum comments.
Assembly is explicit: a Life Path profile suggests an approach; a Personal Year passage sets a broader focus; a Personal Month passage supplies the immediate direction and three actions. We explain repeated themes and place different themes side by side. This editorial synthesis is not an independently validated prediction model.
People with the same combinations receive the same passages. Entering more digits does not make this a diagnosis or a verified measurement of your personality.
WHAT THE SOURCES CAN — AND CANNOT — SUPPORT
These document how practitioners calculate and interpret the numbers. We use them for the declared method and symbolic vocabulary. Their pages do not establish the predictive accuracy of our reports.
Read the calculation reference →A January 2026 discussion shows disagreement about adding the birth year and when a Personal Year begins. We use it to identify common questions, not as proof of accuracy. Our fixed January–December rule resolves that ambiguity for this product.
Read the forum discussion →This small study of 11 participants examined preferred-name numerology. Participants’ own-number descriptions did not rate significantly better than other descriptions. It studied name numbers, not our birth-date or monthly formulas, and does not settle every numerology claim. It provides no validation for this product.
Read the original article, printed pp. 53–56 →This classic work concerns personal validation and the interpretation of personality descriptions. It is a reason to distinguish finding a reading relatable from establishing its accuracy. It is not a test validating numerology.
View the publication record and DOI →PRIVACY & FREE EDITION
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