§ I — The Day You Began · 出生日期
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Date-only scope
The Heavenly Stem of the Day Pillar remains the reference point for the chart and supports a useful date-based reading.
Year, Month, and Day are shown while the missing Hour Pillar stays visibly unresolved instead of being replaced with a fabricated birth hour.
Five Element balance, Ten God emphasis, and timing-sensitive claims exclude the unresolved Hour Pillar and carry an accuracy notice in the result.
Accuracy boundary
The Hour Stem and Hour Branch cannot be recovered from a birth date. They can add element weight, hidden-stem relationships, and later-life symbolism, so this page does not claim to produce a complete Four Pillars chart.
Births near midnight or an exact solar-term transition need extra care because a reliable time and location can also revise a date-based pillar. Add those details later in the full calculator when they become available.
Do not substitute noon or midnight as your reported birth time. Internal calculation anchors are never displayed as a known Hour Pillar.
Yes. A recorded birth date can establish a Day Master and three date-based pillars. The Hour Pillar remains unknown, and findings that depend on it are labeled provisional.
It can show the date-based Year, Month, and Day Pillars, your Day Master, and a provisional Five Element and Ten God pattern that excludes the unresolved Hour Pillar.
No. This calculator may use noon internally to derive date-based values, but it never presents that generated Hour Pillar as your real birth hour.
A reliable time can matter near midnight or an exact solar-term boundary. The calculator calls out that uncertainty rather than treating a date-only result as a complete Four Pillars chart.