Civil-date reference · 1988-12-31
December 31, 1988 BaZi Chart
Saturday, December 31, 1988 maps to a reference three-pillar record of 戊辰 · 甲子 · 庚申. The hour pillar remains unresolved until birth time and place are supplied.
Answer first: the reference Day Master for 1988-12-31 is Geng · Yang Metal, and the day pillar is Yang Metal Monkey (庚申). This is a date record, not a complete personal reading.
Deterministic record
1988-12-31 at a glance
| Gregorian date | Saturday, December 31, 1988 |
|---|---|
| Lunar date | 农历戊辰年十一月廿三 · lunar month 十一月, day 廿三 |
| Reference pillars | 戊辰 · 甲子 · 庚申 (year · month · day) |
| Day Master | Geng · Yang Metal · heavenly stem 庚 |
| Solar-term position | Day 11 of Winter Solstice (冬至), beginning 1988-12-21 |
| Next solar term | Minor Cold (小寒) · 1989-01-05 · 5 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 Dragon · Wu Chen
The visible stem is Wu · Yang Earth; the branch is Chen · Dragon · Earth. Its Na Yin is 大林木, and the branch contains hidden stems 戊 · 乙 · 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 →
Yang Metal Monkey · Geng Shen
The visible stem is Geng · Yang Metal; the branch is Shen · Monkey · Metal. Its Na Yin is 石榴木, and the branch contains hidden stems 庚 · 壬 · 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 December 1988
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 1988-12-31
What is the BaZi day pillar for Saturday, December 31, 1988?
In this civil-date reference, the day pillar is 庚申 (Yang Metal Monkey), cycle position 57 of 60. A personal chart must still resolve the birthplace, local clock time, and day boundary.
What is the Day Master for Saturday, December 31, 1988?
The reference Day Master is 庚, Geng · Yang 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 1988-12-31 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 1988-12-31?
1988-12-31 is day 11 of Winter Solstice (冬至) in this date reference. The next solar term is Minor Cold (小寒) on 1989-01-05.