Jia Wood
Upright and growth-oriented, tends to lead with principles and responsibility.
The Day Master (Day Stem) defines the core self in a Bazi chart, based on your birth day’s Heavenly Stem. This page overviews the ten Day Masters (Jia–Gui), covering their traits, behavior patterns, and energy expressions.
Note: The Day Master is only one dimension of a Bazi chart. Deeper insight comes from viewing the full Four Pillars and Ten Gods together.
In BaZi (Four Pillars), the Day Master (also called the Day Stem) is the Heavenly Stem of your Day Pillar. It represents your core self and energy baseline — the main reference point many readings build on.
There are ten Heavenly Stems: Jia, Yi, Bing, Ding, Wu, Ji, Geng, Xin, Ren, Gui. Your Day Master type is determined by which stem appears on your birth day. In practice, the Ten Day Masters form ten core archetypes shaped by Yin/Yang and the Five Elements.
The Day Master is valuable because it gives you a clean starting framework: how you naturally express energy, your default tendencies, and the kind of roles or strengths you may lean into. It is often consideredthe first step in reading a BaZi chart.
Still, the Day Master is not the whole chart. The same Day Master can look very different depending on the Month, Branches, Ten Gods structure, and overall element flow. For deeper insight into personality detail, life structure, and fortune trends, all Four Pillars must be read together.
Your Day Master (Day Stem) is the Heavenly Stem of the Day Pillar. In the Four Pillars chart, look at the “Day” column — the top cell is your Day Master.
Below is a live example based on the current time (2026-02-06 15:37): the Day Pillar’s stem is highlighted — that is the Day Master (here: Xin).
| Year | Month | Day | Hour | |
|---|---|---|---|---|
| Heavenly Stem | Bing | Geng | Xin | Bing |
| Earthly Branch | Wu | Yin | Hai | Shen |
Summary: Your Day Master is the stem of the Day Pillar. From there, you can explore how the ten Day Masters differ in traits and energy style.
Click any row to view the detailed Day Master guide.
Upright and growth-oriented, tends to lead with principles and responsibility.
Adaptable and socially aware, grows through connection and timing.
Energizing and direct, thrives on clear missions and momentum.
Warm and refined, shines through focus, learning, and craftsmanship.
Anchoring and boundary-aware, steady under pressure and duty-driven.
Nurturing and methodical, excels at maintaining systems and relationships.
Direct and execution-first, cuts through issues with speed and resolve.
Refined and detail-oriented, values quality, precision, and good standards.
Big-picture and flexible, explores options quickly and adapts on the fly.
Subtle and perceptive, reads nuance well and prefers quiet, precise moves.
In BaZi (Four Pillars), the Day Master (Day Stem) is the chart’s most common reference point. It’s not the whole answer, but it aligns the logic: define the “self,” then read how everything else interacts with it.
For a deeper explanation and common misconceptions, see: What Is a Day Master in BaZi? (Learn with a BaZi Calculator).