What shows up in the chart
- Chart facts are produced by deterministic engines and verified support fields.
- City and timezone support fields are resolved through backend lookup before chart calculation.
- True solar time is displayed as a calculation basis when the selected method supports it.
- Unknown birth time keeps hour-sensitive facts approximate, unavailable, or low-confidence.
Why exact time matters
Exact birth time is required for hour pillar, ascendant, house, Zi Wei palace, and some Moon or period anchors. Missing time should remain visible as a confidence boundary.
Use this guide with the calculator
This guide is meant to help you recognize the fields after the chart is calculated, not to replace the calculator.
- Look for these method labels in the result: Deterministic engines, Timezone lookup, True solar time, unknown_time, Chart export.
- Before exporting, check the time basis: Exact birth time is required for hour pillar, ascendant, house, Zi Wei palace, and some Moon or period anchors. Missing time should remain visible as a confidence boundary.
- If the result labels a field unavailable, approximate, or low-confidence, keep that boundary in your notes.
Open the related calculator
Four-system chart calculator