Civil-date reference · 2025-12-21
December 21, 2025 BaZi Chart
Sunday, December 21, 2025 maps to a reference three-pillar record of 乙巳 · 戊子 · 甲子. The hour pillar remains unresolved until birth time and place are supplied.
Answer first: the reference Day Master for 2025-12-21 is Jia · Yang Wood, and the day pillar is Yang Wood Rat (甲子). This is a date record, not a complete personal reading.
Deterministic record
2025-12-21 at a glance
| Gregorian date | Sunday, December 21, 2025 |
|---|---|
| Lunar date | 农历乙巳年十一月初二 · lunar month 十一月, day 初二 |
| Reference pillars | 乙巳 · 戊子 · 甲子 (year · month · day) |
| Day Master | Jia · Yang Wood · heavenly stem 甲 |
| Solar-term position | Day 1 of Winter Solstice (冬至), beginning 2025-12-21 |
| Next solar term | Minor Cold (小寒) · 2026-01-05 · 15 days away |
| Western constellation | Sagittarius (射手) |
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 Wood Snake · Yi Si
The visible stem is Yi · Yin Wood; the branch is Si · Snake · Fire. Its Na Yin is 覆灯火, and the branch contains hidden stems 丙 · 庚 · 戊. Open the full Jiazi record →
Yang Earth Rat · Wu Zi
The visible stem is Wu · Yang Earth; the branch is Zi · Rat · Water. Its Na Yin is 霹雳火, and the branch contains hidden stem 癸. 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 →
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 2025
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 2025-12-21
What is the BaZi day pillar for Sunday, December 21, 2025?
In this civil-date reference, the day pillar is 甲子 (Yang Wood Rat), cycle position 1 of 60. A personal chart must still resolve the birthplace, local clock time, and day boundary.
What is the Day Master for Sunday, December 21, 2025?
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 2025-12-21 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 2025-12-21?
2025-12-21 is day 1 of Winter Solstice (冬至) in this date reference. The next solar term is Minor Cold (小寒) on 2026-01-05.