Civil-date reference · 1987-01-31
January 31, 1987 BaZi Chart
Saturday, January 31, 1987 maps to a reference three-pillar record of 丙寅 · 辛丑 · 庚辰. The hour pillar remains unresolved until birth time and place are supplied.
Answer first: the reference Day Master for 1987-01-31 is Geng · Yang Metal, and the day pillar is Yang Metal Dragon (庚辰). This is a date record, not a complete personal reading.
Deterministic record
1987-01-31 at a glance
| Gregorian date | Saturday, January 31, 1987 |
|---|---|
| Lunar date | 农历丁卯年正月初三 · lunar month 正月, day 初三 |
| Reference pillars | 丙寅 · 辛丑 · 庚辰 (year · month · day) |
| Day Master | Geng · Yang Metal · heavenly stem 庚 |
| Solar-term position | Day 12 of Major Cold (大寒), beginning 1987-01-20 |
| Next solar term | Start of Spring (立春) · 1987-02-04 · 4 days away |
| Western constellation | Aquarius (水瓶) |
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 Fire Tiger · Bing Yin
The visible stem is Bing · Yang Fire; the branch is Yin · Tiger · Wood. Its Na Yin is 炉中火, and the branch contains hidden stems 甲 · 丙 · 戊. Open the full Jiazi record →
Yin Metal Ox · Xin Chou
The visible stem is Xin · Yin Metal; the branch is Chou · Ox · Earth. Its Na Yin is 壁上土, and the branch contains hidden stems 己 · 癸 · 辛. Open the full Jiazi record →
Yang Metal Dragon · Geng Chen
The visible stem is Geng · Yang Metal; the branch is Chen · Dragon · Earth. Its Na Yin is 白蜡金, and the branch contains hidden stems 戊 · 乙 · 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 January 1987
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 1987-01-31
What is the BaZi day pillar for Saturday, January 31, 1987?
In this civil-date reference, the day pillar is 庚辰 (Yang Metal Dragon), cycle position 17 of 60. A personal chart must still resolve the birthplace, local clock time, and day boundary.
What is the Day Master for Saturday, January 31, 1987?
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 1987-01-31 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 1987-01-31?
1987-01-31 is day 12 of Major Cold (大寒) in this date reference. The next solar term is Start of Spring (立春) on 1987-02-04.