Life Path number distribution over the 1900-2099 civil calendar

An open, fully reproducible census of Life Path numbers across the civil calendar. Each of the 73,049 dates in the 1900-2099 window was run once through a deterministic Pythagorean reduction: reduce the day, reduce the month, reduce the digit-sum of the year, add the three parts, and reduce the total again, keeping the master numbers 11, 22 and 33 whole at every step. The row-level table gives one line per date with all three reduced components, the parts sum and the final Life Path number, so anyone can recompute the aggregate independently rather than trusting it. The aggregate shows a structure that is pure arithmetic: digit-summing preserves a number modulo 9, so the Life Path is a mod-9 function of the date wearing a costume. Six numbers (1, 3, 5, 7, 8, 9) therefore sit within four dates of one ninth (11.11%), while 2, 4 and 6 fall below it because the master numbers are congruent to them (11 to 2, 22 to 4, 33 to 6) and take part of their share; each digit-plus-master pair adds back to one ninth. The rarest value is 33, with 393 dates (0.54%). Both reduction orders are published, because the rarity figure depends on the order. Reducing day, month and year separately before adding them (what this dataset's main table does, and what the product computes) puts 33 on 393 dates, 0.54%. Summing all eight digits of the date at once and reducing that — another convention inside the same master-preserving school — puts 33 on 2,186 dates, 2.99%: a 5.6x difference in the headline number. The two orders disagree on 10,374 of the 73,049 dates (14.2%). Any claim about how rare a Life Path number is must name its reduction order, so `life-path-by-reduction-order.csv` carries both side by side. Scope and honesty: this is a census of CALENDAR DATES, not of people. Real birthdays are not uniformly distributed across the calendar, so the share of living people holding each number differs from the share of dates. Nothing here claims that numerology predicts anything — the dataset is the arithmetic of a reduction rule, and the interpretations attached to the numbers are a cultural tradition, not a scientific finding. Canonical source: https://numeroai.me/articles/life-path-number-distribution/