Annual chart coordinate · 年柱
Bazi Year Pillar 年柱: Li Chun Boundary, Stem & Animal
The Bazi year changes at Li Chun, around 3–5 February, not Chinese New Year. Read how its stem and animal branch join the repeating 60-year cycle.
Stem above · branch below
What the annual pair actually adds
The two characters remain separate coordinates. The stem carries phase and polarity; the branch carries a position in the twelve-branch cycle, with its own fixed phase and animal label.
- 01Visible stemPhase + polarity
One of the ten Heavenly Stems sits above the branch.
- 02Visible branchAnnual branch + animal
One of twelve Earthly Branches names the year's cycle position.
- 03Time scaleLi Chun to Li Chun
The coordinate changes once at the Start of Spring term.
- 04Chart roleOne visible pillar
It supplies two of eight visible characters when a birth time is known.
Where this coordinate changes
The chart year opens at an astronomical moment
Four Pillars and popular zodiac calendars answer different year-boundary questions. This site keeps both readings visible instead of forcing one label to do both jobs.
- 01 · Before
Read the preceding chart year
A January birth, or a birth before Li Chun in early February, remains in the preceding sexagenary year.
- 02 · Boundary
Li Chun changes the pillar
The exact local-civil timestamp of 立春 turns both the Four Pillars year and the Tiger month.
- 03 · Separate clock
Chinese New Year changes the outer year
The first lunar-month day begins the familiar zodiac year, often days or weeks away from Li Chun.
How the pillar is formed
How the year pair is derived
The calculation first places the birth on the correct side of Li Chun. It then reads the corresponding position in the continuously repeating sixty-pair stem–branch cycle.
Birth moment → Li Chun-bounded year → one of 60 stem–branch pairs
- 01
Resolve the boundary
Compare the local date and time with that year's exact Li Chun timestamp.
- 02
Select the cycle year
Before the term use the preceding year position; from the term onward use the new one.
- 03
Read both characters
The cycle position yields one Heavenly Stem and one parity-matched Earthly Branch.
Keep the coordinate precise
Common year pillar confusions
Check the date boundary, pillar position and related chart terms.
- Is the year pillar always my Chinese zodiac animal year?
- No. The branch animal can differ during the interval between Li Chun and Chinese New Year because the two systems turn at different boundaries.
- Does the year animal describe the whole chart?
- No. It names one branch. The month, day and hour pillars add six more visible characters, and the day stem becomes the comparison point.
- Does the Gregorian year change the pillar on 1 January?
- No. January 1 is not a Four Pillars boundary; the chart year changes at Li Chun.