BAZI KNOWLEDGE BASE
How to check a BaZi chart when two calculators disagree
When two BaZi charts disagree, first identify which character differs, then check the record and rule that produced it. A different Year Pillar, Day Pillar or Hour Stem calls for different checks. If all eight characters match but descriptions do not, examine the interpretation instead. You can locate the problem without first learning every term in the system.
Step one: did both tools use the same birth record?
Compare the full date, Gregorian or lunar calendar, leap-month label, local clock time, whether that time is known, and birth city. Verify a lunar conversion before entering it; lunar month two, day one is not Gregorian 1 February. If one record has already been converted between zones, retain that fact to avoid converting twice.
An hour-only entry need not be minute-accurate, and “around ten” does not establish exactly 10:00. Do not invent noon to fill an unknown time. The purpose is to align the evidence, not adjust both inputs toward a preferred description.
Step two: follow the record, time and pillar calculation order
First establish the calendar date, then interpret the clock record with the birthplace’s historical zone. If the method uses solar time, check longitude and the equation of time next. Also establish whether the Day Pillar uses the civil date or another rollover convention. Tools may not expose all their choices; an undisplayed setting is not evidence of agreement.
Check the Li Chun year, then the Jie interval for the Month Branch and the Year Stem used to derive its stem. Locate the day in a continuous count under the stated rollover rule. Determine the Hour Branch from the final clock and its stem from the applicable deriving Day Stem. When an upstream input changes, check its dependants again. Hidden stems, Ten Gods, strength, timing and prose come afterward.
Step three: use the differing field to narrow the search
The table gives starting points, not instant diagnoses. When several fields differ, begin with calendar conversion and the time basis. Even a single apparent mismatch may be a naming or display-order difference.
| What differs | Check first |
|---|---|
| Year Pillar | Li Chun side, year-boundary convention, zone and dated term reference |
| Month Pillar | Jie versus lunar months; the year stem used for the month stem |
| Day Pillar or Day Master | Calendar conversion, civil/solar date, 23:00/midnight rollover and cycle anchor |
| Hour Branch | 12/24-hour entry, minutes, zone, solar time and hour boundaries |
| Same Hour Branch, different stem | Deriving Day Stem, late-Zi rule and solar midnight crossing |
| Same pillars, different descriptions | Terminology and Ten God mapping first, then weights, strength and interpretation |
An easy-to-miss example: Zi remains Zi, but its stem changes
Consider a rule-only illustration: the entered date has Jia as its Day Stem, the original clock reads 23:50, and the chosen correction moves it to 00:10 on the following date. Both readings belong to Zi hour, so comparing only their branches would miss a change.
Under Clarify’s current civil-date Day-Pillar rule, the 23:00 hour derives its stem from the following Yi day, giving Bing Zi. At corrected 00:10, hour derivation uses the entered date’s Jia stem, giving Jia Zi. The Day Pillar and Zi branch stay the same while the Hour Stem changes from Bing to Jia. Check the whole pillar. This example specifies no real city or date; it illustrates the difference between two final clock readings.
Step four: check the tables, then verify an independent date
For example, a Jia year starts Yin month at Bing Yin and reaches Wu Chen in Chen month. A Jia deriving day gives Ji Si in Si hour and Geng Wu in Wu hour. If a result differs, check its deriving stem and late-Zi convention before the table or implementation. “Seven Killings” and “Indirect Officer” can be aliases; calling Geng Direct Officer (a traditional role associated with rules, responsibility and expectations) for a Jia Day Master would instead conflict with this knowledge base’s standard mapping.
The Day Pillar also needs actual dated stem-branch references from an independent source. Consecutive days and sixty-day returns catch some errors, but a systematic one-day shift can preserve both. Several websites agreeing may not be independent evidence if they share an algorithm.
Specific limits to keep in mind when checking Clarify
With a valid birthplace and known time, Clarify’s current full calculation uses solar time for the Hour Pillar (the two-symbol column for the birth hour), retains the entered civil Gregorian date for the Day Pillar, and treats late-Zi hour derivation as above. The form currently has no lunar input, interval candidates, repeated-hour selector or rollover switch. Older explanatory prose should not be taken as evidence that these controls exist.
Solar terms (seasonal markers based on 24 divisions of the Sun’s yearly path) use an approximate formula; displayed precision is not a near-boundary accuracy guarantee. Unknown time uses a reference noon for parts of the calculation rather than establishing noon as the birth time. Also distinguish the strength label used in the identity name: it stays aligned with the civil-clock result, while other full-chart information can use solar time. Establish which result layer a label belongs to before comparing it.
Finally: why can identical characters receive different readings?
Once the pillars match, compare hidden stems, terminology and Ten God rules. Strength scores, seasonal weighting, useful-god methods and wording can still differ. Listing each rationale is more useful than simply saying “different schools.” A clear mapping error still deserves correction even when it appears in an interpretation section.
Keep a short comparison record: original evidence, both conventions, the first differing field, resolved points and remaining uncertainty. Retain supported alternatives where the time evidence crosses a boundary. Personal experience can help you reflect on a reading, but it cannot establish a birth minute or validate a formula.