Civil-date reference · 2020-01-31
January 31, 2020 BaZi Chart
Friday, January 31, 2020 maps to a reference three-pillar record of 己亥 · 丁丑 · 癸酉. The hour pillar remains unresolved until birth time and place are supplied.
Answer first: the reference Day Master for 2020-01-31 is Gui · Yin Water, and the day pillar is Yin Water Rooster (癸酉). This is a date record, not a complete personal reading.
Deterministic record
2020-01-31 at a glance
| Gregorian date | Friday, January 31, 2020 |
|---|---|
| Lunar date | 农历庚子年正月初七 · lunar month 正月, day 初七 |
| Reference pillars | 己亥 · 丁丑 · 癸酉 (year · month · day) |
| Day Master | Gui · Yin Water · heavenly stem 癸 |
| Solar-term position | Day 12 of Major Cold (大寒), beginning 2020-01-20 |
| Next solar term | Start of Spring (立春) · 2020-02-04 · 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.
Yin Earth Pig · Ji Hai
The visible stem is Ji · Yin Earth; the branch is Hai · Pig · Water. Its Na Yin is 平地木, and the branch contains hidden stems 壬 · 甲. 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 →
Yin Water Rooster · Gui You
The visible stem is Gui · Yin Water; the branch is You · Rooster · Metal. Its Na Yin is 剑锋金, and the branch contains hidden stem 辛. 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 2020
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 2020-01-31
What is the BaZi day pillar for Friday, January 31, 2020?
In this civil-date reference, the day pillar is 癸酉 (Yin Water Rooster), cycle position 10 of 60. A personal chart must still resolve the birthplace, local clock time, and day boundary.
What is the Day Master for Friday, January 31, 2020?
The reference Day Master is 癸, Gui · Yin Water. 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 2020-01-31 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 2020-01-31?
2020-01-31 is day 12 of Major Cold (大寒) in this date reference. The next solar term is Start of Spring (立春) on 2020-02-04.