缺输入 · 诚实的答案
多数网站会悄悄用正午代替，然后给你一张看起来完整的盘。本站只算确定成立的三柱，把时柱标为未知，并拒绝补齐。半张盘、并且标明是半张盘，比一张有四分之一靠猜的整盘更有用。
Using the example chart this site reuses on every page (1985-07-04 12:00), the two columns below are the same input with and without the hour.
| 构件 | 有时辰 | 无时辰 |
|---|---|---|
| 年柱 | 乙丑 Yi Chou | 乙丑 Yi Chou |
| 月柱 | 壬午 Ren Wu | 壬午 Ren Wu |
| 日柱 | 甲辰 Jia Chen | 甲辰 Jia Chen |
| 时柱 | 庚午 Geng Wu | 不输出 |
| 日主（命主） | 甲 Jia | 甲 Jia |
| 五行计分 | 8 字全算 | 6 字 + 藏干（少时柱两字） |
| 起运岁数 | 可算（需时柱） | 需时柱，缺失时不猜 |
The hour branch is set by the two-hour block you were born in. Below is what the example day (a Jia-Chen day) produces in each of the twelve blocks — this is exactly the information an unknown hour costs you.
| 时段 | 时钟区间 | 时柱 | 时干五行 |
|---|---|---|---|
| 子 Zi, Rat · 含 23:00–24:00 | 23:00–01:00 | 甲子 Jia Zi | Wood |
| 丑 Chou, Ox · 1:00 | 01:00–03:00 | 乙丑 Yi Chou | Wood |
| 寅 Yin, Tiger · 3:00 | 03:00–05:00 | 丙寅 Bing Yin | Fire |
| 卯 Mao, Rabbit · 5:00 | 05:00–07:00 | 丁卯 Ding Mao | Fire |
| 辰 Chen, Dragon · 7:00 | 07:00–09:00 | 戊辰 Wu Chen | Earth |
| 巳 Si, Snake · 9:00 | 09:00–11:00 | 己巳 Ji Si | Earth |
| 午 Wu, Horse · 11:00 | 11:00–13:00 | 庚午 Geng Wu | Metal |
| 未 Wei, Goat · 13:00 | 13:00–15:00 | 辛未 Xin Wei | Metal |
| 申 Shen, Monkey · 15:00 | 15:00–17:00 | 壬申 Ren Shen | Water |
| 酉 You, Rooster · 17:00 | 17:00–19:00 | 癸酉 Gui You | Water |
| 戌 Xu, Dog · 19:00 | 19:00–21:00 | 甲戌 Jia Xu | Wood |
| 亥 Hai, Pig · 21:00 | 21:00–23:00 | 乙亥 Yi Hai | Wood |
The late Zi hour (23:00–23:59) belongs to the next day under the mainstream convention, so the day pillar and the hour pillar move together. These two rows differ by two minutes of clock time:
| 出生时刻 | 日柱 | 时柱 |
|---|---|---|
| 22:58 | 甲辰 Jia Chen | 乙亥 Yi Hai |
| 23:00 | 乙巳 Yi Si | 丙子 Bing Zi |
The site publishes this disagreement instead of hiding it: under the minority convention (no day roll-over at late Zi, sect=0) a 23:30 birth gives day 甲辰 Jia Chen and hour 丙子 Bing Zi; under the mainstream one (sect=1) it gives day 乙巳 Yi Si and hour 丙子 Bing Zi. This site defaults to the latter and prints the former on the methodology page rather than choosing for you.
Leave the last field empty to switch into unknown-hour mode and see the same output rules applied.
本页刻意不做的事：网上流传的通俗版本会给每个名目指派一套固定性格——一个地支一种人、一个阶段一种命。本站拒绝这种写法。这里发布的是一个结构位置：谁的五行坐在哪里、坐在什么样的地基上、地基里藏着什么。同一个名目在不同的月令之下读法不同；缺少盘中其余各字时，任何有意义的判断都不存在。凡传统给出读法之处，本页标注「此为传统读法」；本站自己的贡献是：页面上的每个数字与名目都由引擎实算、带版本号，可与方法论页逐条对账。
以下是本页独有的问题；更通用的口径问题见方法论页。
本站把八字里可穷举的构件都拆成了独立的页：每一页的事实都由同一个引擎实算，可逐条核对，不是人格对照表。