Civil-date reference · 1990-04-15
April 15, 1990 BaZi Chart
Sunday, April 15, 1990 maps to a reference three-pillar record of 庚午 · 庚辰 · 庚戌. The hour pillar remains unresolved until birth time and place are supplied.
Answer first: the reference Day Master for 1990-04-15 is Geng · Yang Metal, and the day pillar is Yang Metal Dog (庚戌). This is a date record, not a complete personal reading.
Deterministic record
1990-04-15 at a glance
| Gregorian date | Sunday, April 15, 1990 |
|---|---|
| Lunar date | 农历庚午年三月二十 · lunar month 三月, day 二十 |
| Reference pillars | 庚午 · 庚辰 · 庚戌 (year · month · day) |
| Day Master | Geng · Yang Metal · heavenly stem 庚 |
| Solar-term position | Day 11 of Clear and Bright (清明), beginning 1990-04-05 |
| Next solar term | Grain Rain (谷雨) · 1990-04-20 · 5 days away |
| Western constellation | Aries (白羊) |
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 Metal Horse · Geng Wu
The visible stem is Geng · Yang Metal; the branch is Wu · Horse · Fire. Its Na Yin is 路旁土, and the branch contains hidden stems 丁 · 己. 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 →
Yang Metal Dog · Geng Xu
The visible stem is Geng · Yang Metal; the branch is Xu · Dog · Earth. Its Na Yin is 钗钏金, and the branch contains hidden stems 戊 · 辛 · 丁. 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 April 1990
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 1990-04-15
What is the BaZi day pillar for Sunday, April 15, 1990?
In this civil-date reference, the day pillar is 庚戌 (Yang Metal Dog), cycle position 47 of 60. A personal chart must still resolve the birthplace, local clock time, and day boundary.
What is the Day Master for Sunday, April 15, 1990?
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 1990-04-15 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 1990-04-15?
1990-04-15 is day 11 of Clear and Bright (清明) in this date reference. The next solar term is Grain Rain (谷雨) on 1990-04-20.