LESSON P16 / 19 OF 20
Comparing input changes
Change one input and see how far the chart moves. That tells you which data must be right.
Original app lesson · freely available here
That is why getting the birthplace right matters more than any reading skill.
What one day changes
The day pillar changes every day, so one day shifts the Day Master — and every Ten God is recomputed.
That is why two people born a day apart can read nothing alike.
What one hour changes
Only the hour pillar moves; the Day Master holds. The outline stays, and later life, children and the private self shift.
That is why an uncertain hour is not a disaster.
What a wrong time zone changes
A wrong time zone can push the time past midnight or a solar term, changing the day or even month pillar. This is the worst error.
Getting the birthplace right matters more than any interpretive skill.
A wrong hour moves one pillar; a wrong time zone can move everything. Fix the time zone first.
CHECK YOURSELF
Try the lesson questions
No score. An incorrect first answer enters your review book.
How much does one day change?
The day pillar turns daily, and every Ten God is relative to it.
Which input error is worst?
A wrong time zone can shift the day or month pillar entirely.
Sources and further reading
- Lesson cases and conventions7 January 2000, Taipei, 10:30 / 11:30 / 12:00, civil time. Replayed with a fixed calculation version; not independently validated against an almanac.
- lunar-javascript · Adopted calculation dataVersion 1.7.7 used for replayed cases and correspondence-table checks. Algorithm agreement is not textual collation.
YOUR STUDY / P16
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