Civil-date reference · 2100-01-12
January 12, 2100 BaZi Chart
Tuesday, January 12, 2100 maps to a reference three-pillar record of 己未 · 丁丑 · 甲寅. The hour pillar remains unresolved until birth time and place are supplied.
Answer first: the reference Day Master for 2100-01-12 is Jia · Yang Wood, and the day pillar is Yang Wood Tiger (甲寅). This is a date record, not a complete personal reading.
Deterministic record
2100-01-12 at a glance
| Gregorian date | Tuesday, January 12, 2100 |
|---|---|
| Lunar date | 农历己未年十二月初三 · lunar month 十二月, day 初三 |
| Reference pillars | 己未 · 丁丑 · 甲寅 (year · month · day) |
| Day Master | Jia · Yang Wood · heavenly stem 甲 |
| Solar-term position | Day 8 of Minor Cold (小寒), beginning 2100-01-05 |
| Next solar term | Major Cold (大寒) · 2100-01-20 · 8 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.
Yin Earth Goat · Ji Wei
The visible stem is Ji · Yin Earth; the branch is Wei · Goat · Earth. Its Na Yin is 天上火, and the branch contains hidden stems 己 · 丁 · 乙. Open the full Jiazi record →
Yin Fire Ox · Ding Chou
The visible stem is Ding · Yin Fire; the branch is Chou · Ox · Earth. Its Na Yin is 涧下水, and the branch contains hidden stems 己 · 癸 · 辛. Open the full Jiazi record →
Yang Wood Tiger · Jia Yin
The visible stem is Jia · Yang Wood; the branch is Yin · Tiger · Wood. Its Na Yin is 大溪水, and the branch contains hidden stems 甲 · 丙 · 戊. 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 January 2100
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 2100-01-12
What is the BaZi day pillar for Tuesday, January 12, 2100?
In this civil-date reference, the day pillar is 甲寅 (Yang Wood Tiger), cycle position 51 of 60. A personal chart must still resolve the birthplace, local clock time, and day boundary.
What is the Day Master for Tuesday, January 12, 2100?
The reference Day Master is 甲, Jia · Yang Wood. 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 2100-01-12 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 2100-01-12?
2100-01-12 is day 8 of Minor Cold (小寒) in this date reference. The next solar term is Major Cold (大寒) on 2100-01-20.