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Da Yun Starting Time: How to Calculate the First Cycle

A practical guide to calculating Grand Fortune start time using solar terms, direction rules, and the traditional day-to-year conversion method.

What Starting Time Means

Anchoring the First Grand Fortune

The start time (Qi Yun) of Grand Fortune is determined by the time gap between birth and the nearest solar term. Direction uses the Yin-Yang of the birth year with gender, and the calculation uses solar terms (not qi). The traditional conversion is three days for one year, one day for four months, and one hour for ten days.

Starting time sets the age the first Da Yun begins. Small differences can shift the entire decade schedule.

Why Start Time Changes Outcomes

Career & Wealth

A slightly different start age can shift which decade aligns with major career windows.

Love & Relationship

Relationship timing may appear earlier or later depending on start time accuracy.

Personality

The natal core does not change, but the age of expression can shift.

Health

Use accurate starting time to plan high-effort phases and recovery cycles.

Classic Notes on Start Time

Traditional timing note: Small timing errors can shift the decade map.

— Start time is the anchor; accuracy protects all downstream cycles.

Start Time Calculation Steps

  • Set Direction: Determine forward or backward sequencing based on the birth year Yin-Yang and gender.
  • Find the Nearest Solar Term: Calculate the time difference to the nearest solar term (not qi).
  • Convert Time to Age: Use 3 days = 1 year, 1 day = 4 months, 1 hour = 10 days to compute the start age.

Start Time FAQs

Q: Why use solar terms instead of qi?

A:

Because the Bazi month pillars are anchored by solar terms, not qi.

Q: What if I use a different conversion rule?

A:

Consistency matters. If you adopt another lineage, keep it consistent across all readings.

Q: How precise must the birth time be?

A:

Precision matters most near boundary hours or when the nearest solar term is close.

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