流派 · 早晚子时、起运、羊刃、三合与飞星

本站排盘所用的门派约定，逐条说明：晚子时算今日还是明日、起运是否按三天折一年、阴干羊刃取何支、紫微用三合派还是飞星派、换年以立春还是正月。

晚子时归哪一天 · Which day does the late Zi hour belong to?

子时从晚上十一点到凌晨一点，横跨两个日历日。古法以子时为一日之始，十一点后便算第二天；清代历法改以午夜换日，于是多了“晚子时仍算当天”的一派。两派都有师承，排出的日柱不同。

The Zi hour (子时), the hour of the Rat, runs from 11 p.m. to 1 a.m., so it spans two calendar days. The old rule made the Zi hour the start of the day, so a birth after 11 p.m. counts as the next day. The Qing dynasty calendar reform moved the change of day to midnight, and a school grew up that keeps a birth in the late Zi hour (11 p.m. to midnight) on the same day. Both schools have their own lines of teachers, and they give different day pillars.

晚子时算当天（本站默认） 日柱不变，时柱天干按次日推。本站默认。
The late Zi hour stays on the same day (site default) The day pillar does not change. Only the hour stem is taken from the next day. This is the site default.
子时起算次日 晚上十一点后出生按次日算，日柱用次日的。
The Zi hour starts the next day A birth after 11 p.m. counts as the next day, so the day pillar is the next day's.

起运年龄怎么算 · When your first luck pillar begins

起运按“三天折一年”把出生到节气的天数换成岁数。精确算法连月和天一起折；老式万年历只取整年，看着简单，但可能差出大半年。

The age at which your first luck pillar begins comes from the number of days between your birth and the nearest month-opening solar term (节), counted at three days to a year. The exact method also turns the days left over into months and days. Older printed almanacs give whole years only. That is simpler, but it can be off by most of a year.

精确到月日（本站默认） 三天一年、一天四月、一时辰十天。本站默认。
Exact to the month (site default) Three days count as a year, one day as four months, and one two-hour period (时辰) as ten days. This is the site default.
取整年 四舍五入到整岁，与旧式万年历一致。
Whole years Rounded to a whole year of age, as old printed almanacs do.

阴干的羊刃在哪 · Where the Blade Star (羊刃) falls for a yin stem

阳干的羊刃各派一致，落在帝旺之地。阴干则分歧：《三命通会》定在墓库（乙见辰、丁己见未、辛见戌、癸见丑），另一派同样取帝旺，还有一派认为阴干本无羊刃。

For the five yang stems every school agrees: the Blade sits on the stem's Zenith (帝旺) branch, the peak of its twelve growth stages. For the five yin stems the schools split. The classic San Ming Tong Hui (三命通会) puts it on a tomb branch, one of the four storage branches: Yi (乙) on Chen (辰), Ding (丁) and Ji (己) on Wei (未), Xin (辛) on Xu (戌), and Gui (癸) on Chou (丑). A second school uses the Zenith branch, as for the yang stems. A third holds that yin stems have no Blade at all.

墓库（三命通会）（本站默认） 本站默认。
The tomb branch, as in the San Ming Tong Hui (site default) This is the site default.
帝旺乙寅、丁巳、己巳、辛申、癸亥。
The Zenith (帝旺) branch, as for yang stems The Zenith branches: Yi on Yin (寅), Ding and Ji on Si (巳), Xin on Shen (申), and Gui on Hai (亥).
阴干无刃 阴干不论羊刃。
Yang stems only No Blade is counted for a yin Day Master.

紫微看盘的门派 · Which Zi Wei school reads the chart

三合派看三方四正，重星曜组合与庙旺；飞星派重四化飞宫，看禄权科忌从哪一宫飞到哪一宫。同一张盘，两派的重点不同，庚壬两干的四化也有不同版本。

The San He (三合) school reads each palace together with its triangle and opposite, and puts the weight on star combinations and brightness. The Fei Xing (飞星) school puts the weight on the Four Transformations and follows them as they fly from one palace to another. It is the same chart read with a different emphasis. The two schools also give different transformations for the Geng (庚) and Ren (壬) stems.

三合派（本站默认） 本站默认。
The San He (三合) school, which reads palace groups (site default) This is the site default.
飞星派（中州） 以飞化为主，四化表从中州派。
The Fei Xing (飞星) school, with the Zhongzhou (中州) table Flying transformations come first. The Zhongzhou table is the Fei Xing table of which star each stem transforms. It differs from the other table only for the Geng and Ren stems.

紫微的换年点 · When the Zi Wei year begins

紫微斗数传统以农历正月初一换年；八字则以立春换年。生在两者之间的人，紫微的年份和八字的年份可能不同。

Zi Wei traditionally starts the new year at the lunar new year. BaZi starts it at the Start of Spring (立春), around February 4. If you were born between those two dates, your Zi Wei chart and your BaZi chart can be cast for different years.

正月初一（本站默认） 传统做法。本站默认。
Lunar new year (site default) The traditional rule. This is the site default.
立春与八字引擎一致。立春只决定紫微的年干；虚岁和大限仍按农历新年算。
At the Start of Spring (立春) Matches your BaZi chart. The Start of Spring sets only the Zi Wei year stem. Nominal age and the decades still count from the lunar new year.