음력과 양력: 사주 볼 때 생시를 알아야 하는 이유

When seeking a Saju consultation, the first question you are asked is your birth date and exact time. Many people hesitate at this point, unsure whether to provide a lunar or solar birthday, or admitting they do not know their precise birth hour. However, the correct application of Lunar and Solar calendars and the accuracy of your birth time are not minor details—they are structural foundations of the Four Pillars of Destiny. Saju analysis is not merely about reading a calendar date; it is about reconstructing the cosmic configuration at the precise moment you were born.

1. Meaning of Lunar and Solar Calendars in Saju

The Solar Terms System: Following the Sun's Movement

It is a common misconception that Saju is purely based on the lunar calendar. In reality, Myeonglihak operates according to the 24 Solar Terms, which divide the Earth's orbit around the sun into seasonal segments. The monthly pillar in Saju does not change on the first day of the lunar month, but at specific solar term transitions such as the Beginning of Spring (Ipchun).

This means that whether you provide a lunar or solar birthday, the crucial step is conversion into the correct Solar Term. If this conversion is inaccurate, the Month Pillar can change entirely, leading to a fundamentally different interpretation of your life structure.

Yin and Yang Reflected in Calendar Systems

The lunar calendar reflects Yin qualities—internal rhythms, emotional cycles, and psychological tides influenced by the moon. The solar calendar represents Yang qualities—external vitality, productivity, and seasonal climate shaped by the sun. Saju integrates both systems, but ultimately prioritizes the sun’s position because seasonal strength determines the dominance and weakness of the Five Elements.

In essence, identifying your accurate birth date is the process of determining which seasonal peak you were born into—spring growth, summer expansion, autumn consolidation, or winter preservation.

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2. Why Birth Time Completes the Four Pillars

The Hour Pillar (Siju): Harvest and Long-Term Outcome

The Hour Pillar represents the fruit or harvest of your life. While the Year Pillar symbolizes roots and ancestry, and the Day Pillar represents your core identity, the Hour Pillar reflects later years, aspirations, children, and subconscious drives. Without the birth time, one quarter of the structural blueprint is missing.

The Final Variable Determining the Day Master’s Strength

Two individuals born on the same date may live entirely different lives depending on the hour of birth. For example, a Fire Day Master born at noon becomes exceptionally strong due to peak Yang energy, whereas the same Fire energy born at midnight may become weakened under dominant Water influence. Since the birth hour finalizes whether your Day Master is strong or weak, omitting it can reduce interpretive accuracy by more than half.

3. The Necessity of Time Correction: Standard vs. Local Time

The Gap Between Standard Time and True Solar Time

Countries use standardized meridians for convenience, but actual solar positioning varies by longitude. For example, South Korea uses the 135°E meridian, while Seoul lies closer to 127.5°E. This creates approximately a 30-minute discrepancy. In Saju, such a difference is not trivial—it may alter the Hour Pillar and, if near midnight, even shift the birth date entirely.

Daylight Savings and Historical Time Adjustments

Historical time policies such as Daylight Savings Time (DST) must also be considered. Professional Saju systems calculate "True Solar Time" by incorporating historical time zone changes and seasonal clock adjustments. Accurate destiny interpretation requires astronomical precision, not just a recorded clock time.

4. How Accurate Data Redefines Destiny Interpretation

High-Resolution Self-Understanding

With an accurate birth hour, patterns of sensitivity, ambition, later-life success, and generational influence become clearer. This transforms Saju from generalized fortune-telling into strategic life mapping. It functions like a high-definition navigation system, helping you adjust speed, direction, and timing according to terrain.

Precision in Gaeun-beop (Fortune Improvement)

Methods to improve fortune—such as balancing deficient elements—depend entirely on correct data. The absence or excess of Metal, Water, or other elements may shift based on the Hour Pillar. Accurate information prevents misguided remedies and enables genuinely effective life adjustments.

Ultimately, Saju is not about fatalism. It is about precision. The more accurate your birth data, the clearer your structural design becomes—and clarity is the first step toward intentional living.

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