FateTellHow to find your Day Master
Each of the Four Pillars has a Heavenly Stem above an Earthly Branch. The Day Master is specifically the Day stem. The branch underneath it belongs to the same pillar, but is a separate character. The year, month and hour stems do not replace the Day Master as the reference for Ten Gods.
- Enter your Gregorian birth date, birthplace time zone and local birth time in the calculator.
- Calculate the chart, find the Day column, and read its upper character in the Heavenly Stems row.
- Match that character with the ten entries below and note its element and Yin or Yang polarity.
Day Master, zodiac animal and Na Yin
The zodiac animal usually comes from the Year branch, the Day Master from the Day stem, and Na Yin from a pillar’s complete stem–branch pair. For a Jia Zi (甲子) Day pillar, the Day Master is Jia Wood and the Na Yin is Sea Gold. The element names differ because they use different classifications.
If someone describes themselves as Wood, ask whether they mean the Day Master or Na Yin. Establishing which classification they used makes the two descriptions easier to compare.
Why two calculators may show different Day Masters
The Day Master changes with the Day pillar. Near midnight or the Zi-hour boundary, time zone, historical daylight saving, true solar time and different day-boundary conventions can affect which day is used. This calculator changes the day at 23:00. Compare the actual settings before treating two results as a disagreement about your chart.
For an unknown birth time, this calculator uses local noon to produce four pillars and luck onset, explicitly marks the hour as assumed, and skips solar correction. If you later obtain the birth time, calculate again and compare the complete chart.
What to read after identifying the Day Master
Identify the Day Master’s element, then look at whether the other stems and branches share, generate or control it, or are generated or controlled by it. The Five Elements guide explains these directions; the Ten Gods guide shows how polarity gives each relationship its name.
The ten BaZi Day Masters
The ten stems form Yin and Yang pairs within Wood, Fire, Earth, Metal and Water. The natural images below are traditional associations that help distinguish them; they do not establish someone’s personality or life experience.
Yang Wood
Jia is Yang Wood. Its familiar image is a large tree, with an upright trunk supporting branches that spread outward.
Yin Wood
Yi is Yin Wood, pictured as a vine or slender branch that bends and grows with support from its surroundings.
Yang Fire
Bing is Yang Fire, pictured as the sun: bright, warm and reaching over a wide area.
Yin Fire
Ding is Yin Fire. Think of an oil lamp lighting the space nearby, its flame kept alive by fuel and shelter.
Yang Earth
Wu is Yang Earth, represented by a thick wall that stands firmly and marks a boundary.
Yin Earth
Ji is Yin Earth. Its image is cultivated soil, holding seeds and water and giving plants a place to take root.
Yang Metal
Geng is Yang Metal, pictured as an axe or hammer. The image emphasizes hard metal and the work of forging it into shape.
Yin Metal
Xin is Yin Metal, pictured as a fine blade. Alongside Geng’s heavier tool, it draws attention to the sharpness and precision of an edge.
Yang Water
Ren is Yang Water: rivers joining into a broad flow, carrying a large volume of water.
Yin Water
Gui is Yin Water, pictured as fine rain settling on plants and gradually soaking into the soil.