How does my birth hour affect the accuracy of my BaZi calculation?
出生时辰如何影响八字测算的精准度？
Your birth hour determines the 'Hour Pillar' (时柱) in your BaZi chart. The Hour Pillar represents your late-stage life (ages 55 and beyond), your relationship with children or subordinates, your career outcomes, and your secret dreams or inner thoughts.
If the birth hour is unknown, you can still obtain a highly accurate analysis of about 75% of your life pattern based on the Year, Month, and Day pillars. However, missing the birth hour makes it difficult to pinpoint the exact strength of your Day Master, which can occasionally affect the calculation of your favorable elements.
To solve this, professional metaphysics masters perform 'Chart Rectification' (Tui Shi) by looking at your major life events (marriage year, career changes, accidents) and tracing backwards to determine which of the twelve daily double-hours (Shi Chen) perfectly fits your past experiences.
您的出生时间决定了您八字中的“时柱”。时柱在命盘中代表着您人生的晚年运势（55岁及以后）、您与子女或晚辈/下属的关系、事业的最终归宿，以及您内心深处最隐秘的愿望和潜意识。
如果不知道出生时辰，仅仅依靠年、月、日三柱（俗称“三柱六字”），依然能推算出您人生大约75%以上的气场格局。然而，缺少了时辰，在某些情况下会难以精确评估日主的强弱，从而可能对喜用神的判定带来细微的偏差。
为了解决这个问题，专业的命理师会进行“反推时辰（逆推命盘）”。通过了解您过去发生的重大人生事件（如结婚年份、重大事业转折、意外事件等），反向追溯在当日的十二个时辰中，哪一个时辰的能量轨迹与您的过去完全契合，从而补全完整的八字。