Four sums, visible inputs
Reduce birth monthM, dayD and yearY separately, retaining 11,22,33. Then P1=reduce(M+D), P2=reduce(D+Y), P3=reduce(P1+P2), P4=reduce(M+Y), with the same master rule. This is a declared contemporary Western numerology convention, not a claim that these life phases were taught by ancient Pythagoras.
Age intervals with no gaps
Reduce the Life Path to its single-digit baseL. The first interval is completed ages 0 through 36−L inclusive. The second begins at the next age and lasts nine completed ages; the third lasts another nine; the fourth continues from the next age. This inclusive-age convention follows the cited age table. Enter a whole age to highlight a chapter; we do not invent a current age.
Chapters as reflective themes
11 and22 remain where encountered;33 is also retained under this page’s stated extension. Masters use their base only when calculating the duration. Each chapter’s number offers a distinct emphasis, practice and possible excess. Age boundaries are calculation labels, not promised events, developmental deadlines or a measure of whether you are on time. The PNG records birth date, selected age, all four sums and intervals.