Ten Day Masters: The Keyword to Your Destiny
In a BaZi chart, the Heavenly Stem of your birth day is your Day Master, and it represents you. It is one of ten stems (Jia, Yi, Bing, Ding, Wu, Ji, Geng, Xin, Ren, Gui), and it sets the core tone of your character. Find your Day Master and you hold the first key to reading your own chart.
Other ways into the ten stems
First, find your Day Master
Your Day Master is set by your birth day; a free chart tells you in 30 seconds.
The Ten Day Masters at a Glance
How to Find Your Day Master in a Chart
A BaZi chart has four pillars: year, month, day and hour. Each pillar has a Heavenly Stem on top and an Earthly Branch below. The stem on top of the day pillar is your Day Master. If your day pillar is Bing-Wu, your Day Master is Bing Fire; if it is Gui-Mao, your Day Master is Gui Water.
The day pillar depends only on your date of birth, not on the solar terms, so any Chinese calendar will give the same answer. The one tricky case is a birth after 11 p.m. The Zi hour starts at 23:00, and some schools change the day at 23:00 while others wait until midnight, so the two methods can give Day Masters one day apart. If you were born in that window, check both.
The Ten Day Masters at a Glance
The ten stems fall into five elements, each with a Yang and a Yin stem. A Yang stem pairs only with Yang branches and a Yin stem only with Yin branches, so every Day Master has exactly six day pillars. Click a pillar for a closer reading.
| Day Master | Element | Image | Its six day pillars |
|---|---|---|---|
| Jia Wood | Yang Wood | a tall tree | Jia-Zi, Jia-Yin, Jia-Chen, Jia-Wu, Jia-Shen, Jia-Xu |
| Yi Wood | Yin Wood | flowers and vines | Yi-Chou, Yi-Mao, Yi-Si, Yi-Wei, Yi-You, Yi-Hai |
| Bing Fire | Yang Fire | the sun | Bing-Zi, Bing-Yin, Bing-Chen, Bing-Wu, Bing-Shen, Bing-Xu |
| Ding Fire | Yin Fire | a candle or lamp | Ding-Chou, Ding-Mao, Ding-Si, Ding-Wei, Ding-You, Ding-Hai |
| Wu Earth | Yang Earth | a mountain or dyke | Wu-Zi, Wu-Yin, Wu-Chen, Wu-Wu, Wu-Shen, Wu-Xu |
| Ji Earth | Yin Earth | moist farmland | Ji-Chou, Ji-Mao, Ji-Si, Ji-Wei, Ji-You, Ji-Hai |
| Geng Metal | Yang Metal | a blade or raw ore | Geng-Zi, Geng-Yin, Geng-Chen, Geng-Wu, Geng-Shen, Geng-Xu |
| Xin Metal | Yin Metal | jewelry and gems | Xin-Chou, Xin-Mao, Xin-Si, Xin-Wei, Xin-You, Xin-Hai |
| Ren Water | Yang Water | rivers and the sea | Ren-Zi, Ren-Yin, Ren-Chen, Ren-Wu, Ren-Shen, Ren-Xu |
| Gui Water | Yin Water | rain, dew and mist | Gui-Chou, Gui-Mao, Gui-Si, Gui-Wei, Gui-You, Gui-Hai |
Yang Stems and Yin Stems
Within one element, a Yang stem pushes its energy outward: direct, visible, easy to read. A Yin stem draws it inward: resilient and good at borrowing strength. Jia Wood is a tree that needs room and sunlight; Yi Wood is a vine that climbs whatever is nearby and still travels far. Geng Metal is an unworked blade that wants fire to forge it; Xin Metal is finished jewelry that fire would ruin.
The difference matters in practice. The classic Di Tian Sui notes that Yang stems follow their own qi rather than the chart's momentum, while Yin stems bend with momentum more readily. In other words, a Yin Day Master is more likely to be carried along when one element dominates the chart.
Same Day Master, Very Different Lives
The same Day Master comes round every ten days, so it cannot tell people apart on its own. Four layers make the real difference:
The birth month. Jia Wood born in spring is in season; born in autumn, it is cut by Metal. The strength of the whole chart. Beyond the month, the other stems and branches either support the Day Master or drain it, which decides whether it is strong or weak and which elements it needs. The day branch. What the Day Master sits on shapes the spouse palace and its own roots, which is why each of the sixty day pillars reads differently. The roles of everything else, which is what the Ten Gods describe.
Read a Day Master page as the base tone of a personality. For career, relationships or a given year, you need the whole chart.
Day Master FAQ
How is a Day Master different from a zodiac animal or sun sign?
Your zodiac animal comes from the branch of your birth year, so everyone born that year shares it. A sun sign changes about once a month. The Day Master comes from the stem of your birth day and changes every ten days, so two people born in the same month can have completely different Day Masters.
Do people with the same Day Master have the same fate?
No. Each Day Master has six day pillars, and the birth month, hour and overall chart strength multiply the combinations. A shared Day Master means a shared base tone, not a shared path.
Can I change my Day Master?
It is fixed by your birth date. What you can adjust is how you live with it, for example by choosing work and surroundings that match your favorable elements.