BaZi · Blog
Marriage Compatibility FAQ: Required Information and Birth Time Source
Deep Oracle Practitioner Desk · 2026-09-19 · 6 min read
合婚常见问题 covers the recurring practical difficulties in comparing two people’s birth data for a relationship assessment. It addresses what such a comparison can and cannot answer, how to handle incomplete information, why total scores and categorical prohibitions are often misleading, the relationship between date selection and compatibility analysis, and the limits of using a compatibility conclusion to make major decisions.
合婚回答得了与回答不了的问题
A compatibility reading based on the eight characters can describe how two sets of natal patterns interact. It can identify areas where the two people tend to reinforce one another, areas where friction repeatedly appears, and periods when external pressures are more likely to affect the relationship. It can also suggest what each person may adjust in communication or conduct.
What this method cannot do is determine whether the two people are destined to marry, whether the relationship will succeed or fail, or whether one person is objectively unsuitable for the other. The comparison operates on the level of 干支 interactions, not on the level of personal history, character development, or individual choice. A difficult interaction does not mean the relationship is doomed, and a smooth interaction does not mean the relationship requires no work. The reading is best treated as a descriptive framework for understanding recurring patterns, not as a verdict.
资料不齐时能做到哪一步
The required information for each person is four items: Gregorian birth date, birth place, birth time, and the source of the birth time. The source matters because it is used to judge whether the recorded time is reliable. A time recalled loosely from family memory is not the same as a time copied from a contemporaneous hospital record, and the analysis must account for that difference.
When the hour is uncertain, the person should write out a candidate range. For example, the mother may remember that the birth was around three in the afternoon, possibly at the beginning of the 申 hour or possibly near the end of the 未 hour. That range should be stated as such. It should not be reduced on the spot to a single 申 time merely to fill in the form. If the range is kept, the reading can at least show which parts of the analysis remain stable across the candidate hours and which parts shift.
When recording the source, three further points should be noted together. First, whether the recorded date may have come from the lunar calendar rather than the Gregorian calendar. Second, whether the birth place was observing daylight saving time at the date of birth. Third, whether the date on an official document conflicts with the family’s recollection. Any one of these can change the resulting 干支, so they should be stated rather than silently resolved.
The four pillars consist of four pairs of 干支: year, month, day, and hour. The hour pillar is one quarter of the whole structure. If the hour pillar is missing, the effect is not confined to the topic of children. It means that any cross-chart 干支 interaction that touches the hour pillar cannot be developed. Since the hour pillar participates in many of the comparisons between two charts, its absence leaves a structural gap rather than a narrow omission.
Cross-chart comparison requires each person’s complete year, month, day, and hour. If only the other person’s zodiac animal is known, the comparison stops at the year branch. A single zodiac sign covers hundreds of millions of people, so the resolving power of that one layer is not enough to distinguish one individual from another in any meaningful way. The zodiac can suggest a broad theme, but it cannot support a compatibility conclusion.
A more sensible order is to meet and talk first. Once both people have decided that they want to continue understanding each other, they may each provide complete birth information for a cross-chart comparison. Using the compatibility reading before the first meeting, as a screening tool to decide whether to meet at all, puts more weight on the method than it can bear. The comparison is more useful after there is an actual relationship to describe.
分数、等级与禁忌这几类说法
合八字 and 八字合婚 are two names for the same procedure. There is no methodological difference between them. The same comparative framework can also be used for long-term working partnerships and for relationships between relatives, provided that both people’s birth times are clearly known. The scope is not limited to marriage.
Looking at the day pillar alone is not enough to reach a conclusion. People who share the same day pillar can differ in year, month, and hour, and their actual life circumstances can differ just as much. If either person’s birth date is uncertain, if the old-calendar conversion has not been checked, or if the birth was near midnight, the day pillar itself may be unstable. In such cases any statement built on the day pillar alone should be treated as provisional.
A total score tends to hide local problems. Two charts may produce a high overall score while containing one repeated conflict point that causes most of the practical difficulty. Conversely, a moderate score may coexist with several stable areas of support. For that reason the observation should be written as a list rather than reduced to a number. The list should include stable points of cooperation, repeated points of conflict, external pressures, and adjustable actions. That form gives the two people something concrete to discuss, whereas a single score mainly invites a yes-or-no reaction.
合婚与择日的先后
The question of whether to choose a wedding date before or after the compatibility comparison comes up often. The two tasks answer different questions. The compatibility comparison describes the interaction between the two people’s existing charts. Date selection chooses a time for an event. Neither requires the other to be completed first in a technical sense.
In practice, it is usually clearer to finish the compatibility comparison first if both birth times are available. The comparison can show which periods are more stressful for the relationship, and the date selection can then be considered with that background in mind. But if the comparison cannot be completed because one person’s birth time is missing, the date selection can still proceed on its own basis. The date is chosen for the event, not as a substitute for the missing chart information. The two procedures should not be conflated.
用合婚结论做决定的边界
A compatibility conclusion is a description of patterns, not an instruction to act. It can help the two people notice where they tend to support each other and where they tend to misread each other. It can also point to periods when external pressure is more likely to test the relationship. It cannot tell either person whether to continue, to marry, to separate, or to avoid the relationship altogether.
The responsible use of a compatibility reading is to treat it as one input among several. The actual history of the relationship, the quality of communication, the practical circumstances, and the choices of the two people all carry more weight than any 干支 interaction. If the reading identifies a recurring conflict point, that is useful only insofar as the two people are willing to address it. If the reading shows a stable area of support, that is useful only insofar as they recognize and maintain it. The conclusion should therefore be worded as a bounded observation: this is what the charts indicate, within these limits of data reliability, and these are the areas where the indication is uncertain. It should not be worded as a prediction of outcome or a judgment on the relationship’s worth.