Are Two Websites Using the Same Paipan Engine?

When two divination websites produce identical charts, a common assumption is that both must be correct because they agree. In practice, many Chinese-metaphysics sites do not implement their own 排盘 logic. They call the same ready-made calculation program or shared library, so identical output may simply mean both are running the same code. Agreement between two websites therefore does not, by itself, establish that either one is handling the underlying calendrical questions correctly.

两个网站结果完全一样说明什么

Identical results across two websites mean only that the two services return the same output for the same input. They do not necessarily mean the two services independently reached the same conclusion. If both sites are wrappers around one calculation engine, the second site adds no independent evidence. In that case, agreement is not corroboration; it is duplication. The more important question is not whether two sites match, but whether the calculation engine they share follows a coherent and consistently applied set of rules for the disputed boundaries in the Chinese calendar.

用三个刁钻输入去分辨

A practical way to tell whether two sites are merely sharing one engine is to submit inputs that are prone to divergent conventions. Three such inputs are especially useful: a time shortly before and shortly after a solar term boundary, exactly 23:00, and a request with no hour supplied. Each of these touches a point where different schools or implementations commonly disagree. If two sites handle all three in exactly the same way, including their quirks and omissions, it is likely that they are using the same underlying program. If they differ on even one, then at least that portion of the calculation is independently implemented or separately configured.

输入一：交节当天的前后一小时

The first test uses the day of a 节 boundary, the moment when a solar term changes. The user submits two times: one hour before the boundary and one hour after it, as separate requests. A tool that actually takes the hour and minute into account will, in most cases, produce a different 月柱 for the two submissions, because the month pillar changes at the solar term, not at the start of the lunar month. A tool that ignores the time or rounds the day too coarsely may keep the same 月柱 for both inputs. If two websites return the same month pillar before and after the boundary, and both fail to show the expected shift, that is evidence of a shared simplification or a shared code path.

输入二：二十三点整

The second test is 23:00 exactly. In the Chinese time system this hour begins the 子 hour, but in ordinary civil dating it still belongs to the current calendar day. Different tools treat this moment differently. Some assign 23:00 to the next day, following the principle that the 子 hour opens the new day. Others keep it on the current day until midnight. Still others split the 子 hour into an early and late portion. This single input is one of the clearest ways to expose a tool’s convention, because the choice affects the 日柱 and sometimes the 时柱. Two sites that produce the same day pillar at 23:00 may simply share the same convention; if they also produce the same result at 23:30 and 00:30, the likelihood of a common engine increases.

输入三：不给钟点

The third test is to omit the time entirely. When no hour is given, some tools output only the three pillars that can be reliably fixed from the date: year, month, and day. They label the result as a three-pillar chart or otherwise indicate that the hour is missing. Other tools do not leave the hour blank. They fill in a default hour, often 子时, and silently produce a four-pillar chart. A few may use noon or another convention. This test is the most direct because the difference is visible immediately: one site returns three pillars, another returns four. If both sites return four pillars with the same default hour, or both return three pillars with the same label, that is a strong sign of shared behavior.

同源与否影响哪一个买卖动作

Whether two websites share the same engine affects one practical step: the habit of checking a chart by running it through a second website. If the two sites are merely front ends for the same program, the second result confirms nothing. The verification is circular. The user has not gained a second opinion; they have only seen the same opinion twice. This matters especially when a chart is being used to make a purchasing decision or to choose a date, because a false sense of confirmation can make an unreliable boundary handling look settled. If the two sites differ on the 交节 test, the 23:00 test, or the missing-hour test, then the second site can serve as a genuine cross-check for that particular point. If they match on all three, the practical conclusion is not that both are correct, but that both are likely the same source and should not be counted as independent verification.

The engine on this site accepts only the Gregorian year, month, day, hour, minute, and sex as inputs. It does not include a longitude field, and it does not apply true solar time correction. This limitation is stated on the page where the input is given. Users who need a chart adjusted for local solar time would need to perform that adjustment themselves before entering the time, or use a separate tool that accepts longitude. The three tests above remain useful when comparing this site with another, because any difference in boundary handling will show up in the day pillar, month pillar, or the presence or absence of an hour pillar. If another site handles all three tests exactly as this one does, it is reasonable to suspect that the two are using the same calculation source or the same set of conventions. If it differs on any one, that difference is likely to be genuine and worth examining before relying on the chart.