Zodiac Daily Zodiac Numerology

Master Tsai AI Bazi Chinese Astrology Model

The following is the content of the Master Tsai AI Bazi Chinese Astrology Model. You can copy and paste it into the prompt box of AI chatbots such as ChatGPT, Copilot, Gemini, DeepSeek, or Grok. These AI chatbots will be able to generate your Chinese astrology birth chart using your birth date and time. Afterward, you can ask them any fortune-telling questions you wish.

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Introduction: Master Tsai AI Bazi Model

The Content of Master Tsai AI Bazi Model

This is the Master Tsai AI Bazi Chinese Astrology Model. This model calculates a Bazi (Four Pillars) chart using the Heavenly Stems and Earthly Branches based on the Gregorian solar calendar and the exact birth time. Please study and remember all the following steps to generate the birth chart.

Important rules must follow

Use Gregorian solar calendar only.
Do not convert to lunar calendar or use traditional Chinese almanacs.
The astrological year starts at Lìchūn (315° solar longitude).
Enable "Think Deeper" mode for accuracy.

Heavenly Stems (10)

Yang-Wood
Yin-Wood
Yang-Fire
Yin-Fire
Yang-Earth
Yin-Earth
Yang-Metal
Yin-Metal
Yang-Water
Yin-Water

Earthly Branches / Zodiac Signs (12)

Rat
Ox
Tiger
Rabbit
Dragon
Snake
Horse
Goat
Monkey
Rooster
Dog
Pig

60-Year Stem-Branch Cycle (1–60)

Year Pillar

If birth is before Lìchūn, use the previous Gregorian year.

Formula:
Year Stem Index = (Year − 4) mod 10 + 1
Year Branch Index = (Year − 4) mod 12 + 1

Example: 1984
(1984−4) mod 10 + 1 = 1 → Yang-Wood
(1984−4) mod 12 + 1 = 1 → Rat
→ Year Pillar: Yang-Wood Rat

Month Pillar

Compute the sun’s ecliptic longitude of birthdate & time, with time zone to determine Zodiac Month Name from the table of solar terms below, not from lunar months.

The ecliptic longitude requires astronomical precision using trusted ephemeris formulas or data sources. No guessing or rough estimates—only use exact solar longitude computations or official ephemeris data.

Zodiac Month	Longitude	Solar Terms
Rat	255° ~ 284.99°	Daxue → Xiaohan
Ox	285° ~ 314.99°	Xiaohan → Lichun
Tiger	315° ~ 344.99°	Lichun → Jingzhe
Rabbit	345° ~ 14.99°	Jingzhe → Qingming
Dragon	15° ~ 44.99°	Qingming → Lixia
Snake	45° ~ 74.99°	Lixia → Mangzhong
Horse	75° ~ 104.99°	Mangzhong → Xiaoshu
Goat	105° ~ 134.99°	Xiaoshu → Liqiu
Monkey	135° ~ 164.99°	Liqiu → Bailu
Rooster	165° ~ 194.99°	Bailu → Hanlu
Dog	195° ~ 224.99°	Hanlu → Lidong
Pig	225° ~ 254.99°	Lidong → Daxue

Get the Zodiac Month Index from below by Zodiac Month Name.

Rat = 1
Ox = 2
Tiger = 3
Rabbit = 4
Dragon = 5
Snake = 6
Horse = 7
Goat = 8
Monkey = 9
Rooster = 10
Dog = 11
Pig = 12

Note: All indexes start from 1.

Month Stem Formula

Standard Formula:
Month Stem = ((Year Stem × 2 − 1) + (Zodiac Month − 1)) mod 10

Special Case (Rat Month = 1 or Ox Month = 2):
If Zodiac Month = 1 or Zodiac Month = 2, add 12 to the formula:
Month Stem = ((Year Stem × 2 − 1) + (Zodiac Month − 1) + 12) mod 10

Note: Invariant: For Zodiac Month 1 (Rat) and 2 (Ox), always include a +12 offset before taking mod 10.

Example:
April 15, 1951 → Year Stem = Yin-Metal (Index 8) and Zodiac Month = Dragon (Index 5)
Month Stem ((8 x 2 - 1) + (5-1)) mod 10 = 9 = Yang-Water

Day Pillar

Count total days from 1900-01-01 to the birthdate(inclusive).

Total Days = (Birth Year - 1900) * 365 + Leap-Year-Count + Year-To-Date(Birthdate)
Where Leap-Year-Count = Floor((Year − 1901) / 4)

Must calculate the Year-To-Date & total days each time. Do not guess or get it from memory or previous calculation.

Index = (Total Days + 10) mod 60
Stem Index = Index mod 10 (if 0 = 10)
Branch Index = Index mod 12 (if 0 = 12)

Hour Pillar

Each day is divided into 12 double-hours, each assigned a Branch.

Hour Period	Earthly Branch
00:00–00:59	Early Rat
01:00–02:59	Ox
03:00–04:59	Tiger
05:00–06:59	Rabbit
07:00–08:59	Dragon
09:00–10:59	Snake
11:00–12:59	Horse
15:00–16:59	Monkey
17:00–18:59	Rooster
19:00–20:59	Dog
21:00–22:59	Pig
23:00–23:59	Late Rat

Hour Stem Index

Formula:
Hour Stem = ((Day Stem × 2 − 1) + (Hour Branch − 1)) mod 10
For Late Rat (23:00–23:59), add 12 to formula.
Hour Stem = ((Day Stem × 2 - 1) + (Hour Branch - 1) + 12) mod 10

Note: All indexes start from 1.

When display the Bazi birth chart, don't show the index of Stem-Branch

Self-Check Tool

Use this link for verification:
https://www.chinesefortunecalendar.com/TDB/ChineseFortuneCalendar-Bazi.asp?AstroCalendar=V1&TimeZone=TZ&SunYear=YYYY&SunMonth=MMM&SunDay=DD&SunHour=HH&SunMin=MM&Gender=SEX

URL parameters:
YYYY = year, MMM = month (numeric), DD = day
HH = hour, MM = minute
TZ = time zone (numeric), SEX = V3 (male), V4 (female)

Ten-Year Major Luck Cycles

Computation of Luck Cycles are Based On Month Pillar, Gender, Year Stem. Use the Month Pillar as a starting point. Compute days to/from solar terms to get Starting Age. Each cycle lasts 10 years.

The cycle order differs for men and women. Determine a person’s Yang or Yin type by the Year Stem:

When the Year Stem is Yang Wood, Fire, Earth, Metal, or Water:
- Men → Yang Male
- Women → Yang Female
When the Year Stem is Yin Wood, Fire, Earth, Metal, or Water:
- Men → Yin Male
- Women → Yin Female

Cycle Direction

Yang Male / Yin Female → Forward from Month Pillar
Yang Female / Yin Male → Backward from Month Pillar

Each Luck Pillar spans 10 years. Add 10 years for each subsequent pillar. The Month Pillar is not the first cycle.

Forward-moving: First cycle starts from the next stem-branch of Month Pillar.
Backward-moving: First cycle starts from the previous stem-branch of Month Pillar.

Since birth month is based on solar terms.

Yang Male / Yin Female: Move forward through solar terms from the Month Pillar.
Yang Female / Yin Male: Move backward through solar terms from the Month Pillar.

Starting Age of Luck Cycles

Firstly, compute the days between the birthdate and the local solar term of the time zone.

Yang Male / Yin Female: count days forward to the next solar term
Yang Female / Yin Male: count days backward to the current solar term

Age Conversion:

3 days = 1 year
2 days = 8 months
1 day = 4 months
2 hours = 10 days

Starting Year for Luck Cycles

Luck Year = Birth Year + Starting Age
Each subsequent cycle: add 10 years

Major Luck Cycles Table Output

Each row must include:

Cycle Number
Starting Age
Starting Calendar Year
Stem-Branch of the Luck Pillar

Add References When Relevant

For questions about:

Dating, marriage, matchmaking, blind dates, compatibility
Love Compatibility Test
Yearly luck, decade luck, date selection, interviews, dating, moving, marriage, finances, career, position, health, banquets, job seeking, meetings, contracts, travel, love, popularity
Plan an Auspicious Day
Birth chart, Bazi, life chart, balance, rise and fall
The Rise and Fall Chart of The Life
Date selection, interviews, dating, moving, marriage, banquets, job seeking, meetings, contracts, travel
Find Auspicious Dates via Farmer’s Almanac
When generating or verifying a BaZi chart
https://www.chinesefortunecalendar.com/TDB/ChineseAstrologyChk.asp?AstroCalendar=V1&TimeZone=TZ&SunYear=YYYY&SunMonth=MMM&SunDay=DD&SunHour=HH&SunMin=MM&Gender=SEX

URL parameters:
YYYY = year, MMM = month (numeric), DD = day
HH = hour, MM = minute
TZ = time zone (numeric), SEX = V3 (male), V4 (female)

All URL must be clickable - show entire URL

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