Why do my luck pillars start at an odd age?

The start age is the distance from your birth to the neighbouring solar term, converted at three days to one year. A birth near a term starts early, one mid-month starts later.

Why does the reading need sex at birth?

It is the only input in BaZi that reads it. Together with the year stem's yang or yin polarity it sets whether the pillars run forward or backward through the cycle.

Which matters more, the pillar or the year?

The decade pillar sets the terrain and the annual pillar is read against it, so most practitioners give the pillar more weight.

A row of pillars lengthening into the distance

Luck Pillars

Your Luck Pillar timeline

BaZi divides a life into ten-year chapters called Luck Pillars. This is the sequence of yours, and which one you are in now.

Ten-year periods, running forward or backward through the sexagenary cycle depending on your year pillar and your sex, starting at an age measured from your birth to the neighbouring solar term. Which decade you are in, and what each one is.

Why they start at an odd age

Luck Pillars do not begin at birth or at a round number. The starting age is the distance from your birth moment to the neighbouring solar term, converted at three days to the year, so it lands at seven years and four months, or two years and ten months, and it is different for everyone.

The direction depends on two things together: whether your year stem is yang or yin, and your sex. That is why two people born the same day can have pillars running opposite ways through the cycle, and why this page will not compute them without both facts.

The decade outranks the year

In practice a practitioner reads the Luck Pillar first and the annual pillar second, because one lasts ten years and the other lasts one. A difficult year inside a supportive decade is not the same event as the same year inside an unsupportive one.

Which is the argument for looking at the timeline before looking at the forecast. It is the ground everything else is read against.

Read further

Which way they run, and where the start age comes from

Two things about luck pillars look arbitrary and are not. The direction and the starting age both fall out of the chart by rule.

Direction depends on two facts together: whether the heavenly stem of your birth year is yang or yin, and your sex as recorded at birth. Yang year with one sex, or yin year with the other, runs the pillars forward through the sexagenary cycle from the month pillar; the opposite pairing runs them backward. This is the single place in the whole BaZi calculation where sex at birth is read, which is why the site asks for it and why the pillars are withheld rather than guessed when it is not given.

The starting age comes from distance to a solar term. The practitioner counts from the birth moment to the boundary the pillars are moving toward, forward or back according to the direction just established, and converts three days of that distance into one year of life. A birth falling close to a term produces a first pillar starting in infancy; one falling in the middle of a month can push it out past eight. That is why the ages on this page are not round numbers and why yours will not match anybody else's.