Civil-date reference · 1931-02-20
February 20, 1931 BaZi Chart
Friday, February 20, 1931 maps to a reference three-pillar record of 辛未 · 庚寅 · 丙午. The hour pillar remains unresolved until birth time and place are supplied.
Answer first: the reference Day Master for 1931-02-20 is Bing · Yang Fire, and the day pillar is Yang Fire Horse (丙午). This is a date record, not a complete personal reading.
Deterministic record
1931-02-20 at a glance
| Gregorian date | Friday, February 20, 1931 |
|---|---|
| Lunar date | 农历辛未年正月初四 · lunar month 正月, day 初四 |
| Reference pillars | 辛未 · 庚寅 · 丙午 (year · month · day) |
| Day Master | Bing · Yang Fire · heavenly stem 丙 |
| Solar-term position | Day 2 of Rain Water (雨水), beginning 1931-02-19 |
| Next solar term | Awakening of Insects (惊蛰) · 1931-03-06 · 14 days away |
| Western constellation | Pisces (双鱼) |
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 Metal Goat · Xin Wei
The visible stem is Xin · Yin Metal; the branch is Wei · Goat · Earth. Its Na Yin is 路旁土, and the branch contains hidden stems 己 · 丁 · 乙. Open the full Jiazi record →
Yang Metal Tiger · Geng Yin
The visible stem is Geng · Yang Metal; the branch is Yin · Tiger · Wood. Its Na Yin is 松柏木, and the branch contains hidden stems 甲 · 丙 · 戊. Open the full Jiazi record →
Yang Fire Horse · Bing Wu
The visible stem is Bing · Yang Fire; the branch is Wu · Horse · Fire. Its Na Yin is 天河水, and the branch contains hidden stems 丁 · 己. 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 February 1931
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 1931-02-20
What is the BaZi day pillar for Friday, February 20, 1931?
In this civil-date reference, the day pillar is 丙午 (Yang Fire Horse), cycle position 43 of 60. A personal chart must still resolve the birthplace, local clock time, and day boundary.
What is the Day Master for Friday, February 20, 1931?
The reference Day Master is 丙, Bing · Yang Fire. 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 1931-02-20 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 1931-02-20?
1931-02-20 is day 2 of Rain Water (雨水) in this date reference. The next solar term is Awakening of Insects (惊蛰) on 1931-03-06.