Published · Reviewed August 21, 2026
Calendar and Chart Calculation
Follow five boundary-first Topics from calendar representation and solar terms to historical time zones and birthplace resolution in Clarify's current chart method.
Overview
Calendar and Chart Calculation explains how a recorded birth becomes a reproducible Clarify chart before any interpretation begins. The five-topic sequence separates calendar representation, Spring Commences, twelve Month Pillar positions, historical civil-time zones, and birthplace resolution. Each page identifies the current product rule, its limits, and an audit tool.
Explore Calendar and Chart Calculation
Follow the calculation sequence
- 1. Solar Terms or Lunar Calendar?
- Separate the source record, calendar conversion, and Clarify's declared pillar boundaries.
- 2. Li Chun Year Boundary
- Compare the resolved birth instant with the exact Spring Commences crossing.
- 3. Solar-Term Month Boundaries
- Audit the twelve 30-degree positions used by Clarify's current Month Pillar method.
- 4. Time Zones
- Resolve historical civil time with an IANA Area/Location and preserve skipped or repeated-time uncertainty.
- 5. Birthplace and BaZi Calculation
- Confirm city, region, coordinates, time zone, precision, and privacy before location-aware calculation.
What this section does not do
- No personal chart generation Any personal pillars and Chinese characters must come from Clarify's deterministic structured backend output.
- No universal-school claim The pages document Clarify's current method and label traditional or alternative conventions separately.
- No fate claim from a boundary Calendar accuracy improves reproducibility; it does not prove personality, events, or outcomes.
- Publication state These five reviewed Topics form Clarify's first public Knowledge Base release; later categories remain unavailable until separately validated.
Use with Clarify
Free BaZi Reading
Apply reviewed concepts only after Clarify calculates a complete chart.
Sources & editorial basis
- Clarify editorial sourceSupporting source recorded in the Claim Ledger.
- Clarify editorial sourceSupporting source recorded in the Claim Ledger.
- Clarify deterministic chart systemCurrent product implementation and tests; supports Clarify behaviour only.
- Clarify MethodologyCurrent calculation and editorial workflow; product-behaviour source.
- Clarify DisclaimerCurrent product boundaries for interpretation and consequential decisions.
- Clarify published BaZi guidesReviewed public guides used for terminology and learning-order continuity.
Source-to-claim locators are maintained in Clarify's editorial evidence record.