Civil-date reference · 1918-12-30
December 30, 1918 BaZi Chart
Monday, December 30, 1918 maps to a reference three-pillar record of 戊午 · 甲子 · 辛亥. The hour pillar remains unresolved until birth time and place are supplied.
Answer first: the reference Day Master for 1918-12-30 is Xin · Yin Metal, and the day pillar is Yin Metal Pig (辛亥). This is a date record, not a complete personal reading.
Deterministic record
1918-12-30 at a glance
| Gregorian date | Monday, December 30, 1918 |
|---|---|
| Lunar date | 农历戊午年十一月廿八 · lunar month 十一月, day 廿八 |
| Reference pillars | 戊午 · 甲子 · 辛亥 (year · month · day) |
| Day Master | Xin · Yin Metal · heavenly stem 辛 |
| Solar-term position | Day 9 of Winter Solstice (冬至), beginning 1918-12-22 |
| Next solar term | Minor Cold (小寒) · 1919-01-06 · 7 days away |
| Western constellation | Capricorn (摩羯) |
Three coordinates, three jobs
What the reference pillars contain
Each stem-branch pair is a deterministic calendar coordinate. Its role changes by pillar position, so the three rows stay separate rather than collapsing into one personality label.
Yang Earth Horse · Wu Wu
The visible stem is Wu · Yang Earth; the branch is Wu · Horse · Fire. Its Na Yin is 天上火, and the branch contains hidden stems 丁 · 己. Open the full Jiazi record →
Yang Wood Rat · Jia Zi
The visible stem is Jia · Yang Wood; the branch is Zi · Rat · Water. Its Na Yin is 海中金, and the branch contains hidden stem 癸. Open the full Jiazi record →
Yin Metal Pig · Xin Hai
The visible stem is Xin · Yin Metal; the branch is Hai · Pig · Water. Its Na Yin is 钗钏金, and the branch contains hidden stems 壬 · 甲. Open the full Jiazi record →
Calculation boundary
What this date does not settle
The atlas uses a standard civil-date reference so dates can be compared consistently. A real birth happened at a place and an instant, not inside a URL slug.
- Hour pillar: requires birth time after historical timezone and true-solar-time correction.
- Day boundary: a late-night clock time can cross the adopted Zi-hour or solar-day boundary after correction.
- Solar-term boundary: an actual birth instant near a term transition can change the resolved year or month pillar.
- Interpretation: one date or one Jiazi pair does not determine career, relationships, wealth, health, or events.
Every date in December 1918
Resolve the fourth pillar
Calculate the actual birth chart
Add birth time and birthplace. Pillarwise then resolves historical timezone, longitude correction, equation of time, day-boundary risk, and the hour pillar before it generates a chart.
Questions about 1918-12-30
What is the BaZi day pillar for Monday, December 30, 1918?
In this civil-date reference, the day pillar is 辛亥 (Yin Metal Pig), cycle position 48 of 60. A personal chart must still resolve the birthplace, local clock time, and day boundary.
What is the Day Master for Monday, December 30, 1918?
The reference Day Master is 辛, Xin · Yin Metal. The Day Master is the heavenly stem of the resolved day pillar; it is not a complete personality result.
Can I calculate a complete BaZi chart from 1918-12-30 alone?
No. A complete Four Pillars chart requires birth time and birthplace. Historical timezone, longitude correction, equation of time, and hour or day boundaries can materially change the resolved chart.
Which solar term contains 1918-12-30?
1918-12-30 is day 9 of Winter Solstice (冬至) in this date reference. The next solar term is Minor Cold (小寒) on 1919-01-06.