About Thaat

BaZi (八字, “eight characters”) is a Chinese calendar framework, also called the Four Pillars. It describes a person with four pairs of symbols taken from the year, month, day and hour of birth. Each pair is a heavenly stem and an earthly branch, and every stem belongs to one of five elements: Wood, Fire, Earth, Metal and Water, in a Yang or Yin form.

The pillar for the day is read as the core of the chart. It gives you one of ten core types, such as Yang Wood or Yin Water.

Thaat uses this framework as a vocabulary for personality and strengths. It is for self-reflection and entertainment, and it does not tell you what will or will not happen.

1. Birth data in. Date, time (optional), birthplace and gender.
2. Local solar time. Your clock time is converted using the time zone rules in force at your birthplace on that date, then corrected for the longitude of the city.
3. Four pillars. The year and month pillars follow the Chinese solar calendar (the sun’s position and the solar terms), not January 1 or the lunar new year. The day and hour pillars come from the date and local solar time.
4. Relationships between pillars. Software measures how strong each element is, which ones are missing, and how the pillars relate to each other.
5. Assembly. The report is assembled from a library of readings that were written and reviewed in advance. Nothing is generated by an AI model when you press the button, so the same birth data always gives the same report.

The calculation step by step, with a worked example and how it is tested

The free part shows your core element and a short summary. The full report ($9 USD, one time) adds:

• Your personality and true nature
• Strengths and fitting careers
• Work that suits your chart
• How your money works
• How wealth reaches you
• Love and partnership
• Your ten-year cycles

How this price compares with other BaZi readings

• Yang Wood 甲Great Tree — Grows straight up and never swerves
• Yin Wood 乙Vine — Finds a way in any conditions
• Yang Fire 丙Sun — Shines on everyone alike
• Yin Fire 丁Candle Flame — Small, but hard to put out
• Yang Earth 戊Mountain — Does not move with the wind
• Yin Earth 己Garden Soil — Whatever is planted grows
• Yang Metal 庚Raw Metal — Not yet polished
• Yin Metal 辛Jewel — Cut and polished
• Yang Water 壬Great Water — Carries everything along
• Yin Water 癸Morning Dew — Seeps into every crevice

The opening of the free reading for Yang Wood:

Read the whole free reading

What is Thaat?

Thaat is a personality and strengths report calculated from your birth date using the Chinese calendar system (八字 BaZi). You get a free summary of your core element straight away, and the full report is a one-time unlock.

Is Thaat a free BaZi calculator?

Yes. Your four pillars, your core element, the balance of the five elements, a short reading of your core element and a compatibility score with every reason are free, with no account. Only the full written report costs $9, paid once.

What is a day master?

In BaZi (八字, Four Pillars), the day master is the heavenly stem of the day pillar, the day you were born. Thaat calls it your core element. It is one of ten: a Yang or Yin version of Wood, Fire, Earth, Metal or Water. It is not your Chinese zodiac animal, which comes from the year pillar. Find your day master from a birth date

What are the ten element types?

The day pillar gives one of ten core types: Yang Wood, Yin Wood, Yang Fire, Yin Fire, Yang Earth, Yin Earth, Yang Metal, Yin Metal, Yang Water, Yin Water. All ten types in one table

Is the compatibility check free?

Yes. Compare two birth dates and you get a score out of 100 with every reason behind it, free and for as many pairs as you like. The full report adds the written reading for each pair. The other person’s birth details are used only to calculate the comparison. How the compatibility score works

Does the report tell me what will happen?

No. The report describes personality tendencies and strengths from a traditional calendar framework. It does not say what will or will not happen to you, and it is meant for self-reflection and entertainment.

How much does Thaat cost?

The element summary is free. The complete report is $9 USD, paid once by card. There is no subscription and no account to create. A refund within 7 days is available in the cases listed in the Terms of Service.

How does the price compare with other BaZi readings?

Practitioner consultations, AI subscriptions and one-time reports are different products and are priced very differently. Our pricing page lists named examples of each, with every price taken from the seller’s own page and dated. BaZi reading prices compared

What do I need to enter?

Your birth date, birth time (if you know it), birthplace and gender. The birthplace is used to correct your birth time to local solar time. Without a birth time the hour pillar is left out and the rest of the chart still works.

How is the report calculated?

The year pillar changes at Lichun (3, 4 or 5 February) and the months at the solar terms, not on calendar dates. The day and hour pillars use true local solar time for your birthplace. The calendar is cross-checked against a separately written calendar library (sxtwl) on 2,233 test cases. The text you read is written in advance and assembled from your chart, with no AI text generation at the moment you press the button. How a BaZi chart is calculated, step by step

Is BaZi accurate?

Two different things. The calculation can be checked, and ours is tested case by case. Whether BaZi descriptions fit people better than chance has not been shown: we found one small study, with weak results, and no blinded, controlled test. Read it as a traditional framework for reflection, not as a measurement. What can be checked and what the evidence shows

Do you store my birth data?

Birth details are kept only to produce your report and to restore it after you pay. You can delete your data at any time from the My account page. See the Privacy Policy for details.

Enter your birth date to see your core element for free.