Fate Hall v6.3 · 2026-10-29

BaZi (Four Pillars of Destiny), the I Ching and Korean folk fortunes side by side with Western astrology, tarot and numerology. Enter your birth date once and see East and West together.

Your details · time settings

Your details

Name (optional) Name in Hanja (optional)Only for Korean name analysis (Seongmyeonghak), which counts Chinese-character strokes. Full birth name (optional, for numerology) MBTI (optional) Blood type (optional)Blood-type personality is pop-culture lore in Korea and Japan, used here for fun.

Sex at birth

BaZi uses it to set the direction of your Luck Pillars.

Calendar

Date of birth

Time of birth

Place of birth Type your city to find it, or pick the country, then the city. Used for your local solar time; it stays in your browser.

Find your cityOr pick the country, then the city below.

Country City

I don’t know my birth time

Time basisClocks follow your time zone’s standard meridian, so the Sun at your birthplace can run minutes ahead of or behind the clock. Longitude correction fixes that offset; true solar time also adds the seasonal equation of time (±16 min). Rat-hour rule (23:00–00:59)Only matters if you were born between 23:00 and 23:59. Under the late rule the Day pillar stays on the same day and the hour stem follows the next day. Most modern practitioners use the early Rat-hour rule.

Why does birth time need correcting? ▾

Solar time, not clock time. In BaZi the hour pillar, and the day pillar near midnight, follow where the Sun actually was. Clock time is set for a whole time zone, so at your birthplace the Sun may cross the meridian earlier or later than clock noon. We use the longitude of your birthplace to correct for that, and can also add the equation of time (from −14 min in February to +16 min in November).

Daylight saving time is taken from your browser’s time zone database for the birth date, so summer-time births are converted to standard time automatically.

Whichever basis you pick, the “Pillars under each time basis” panel shows every combination side by side. If they differ, choose the one closest to the time on your birth certificate.

Remember my birth details on this device

Everything is calculated in your browser. Your details are never sent to a server; if “Remember” is on they are kept only in this browser’s storage. Privacy policy ·

About the BaZi calendar

A manseryeok — literally a “ten-thousand-year calendar” — is the reference book Korean BaZi readers keep on the desk. For every day it lists the solar date, the Korean lunar date and the stem-branch pair of the day, and it marks the moment each solar term begins. With it you can write down the Four Pillars for any moment without doing the astronomy yourself. This page is that book in your browser for 1901 to 2049.

What you can look up

Pick a date and, if you know it, a time. You get the year, month, day and hour pillars, the lunar date, the zodiac animal of the BaZi year and the solar month the moment falls in, with the exact start and end of that month. Below, the month table lists every day with its day pillar and lunar date, and shows which solar terms fall in that month. Tap any day to load it into the lookup.

Why the year and month change on odd dates

In BaZi the year turns at the Beginning of Spring around February 4, not on January 1 or the lunar New Year, and each month turns at a solar term rather than on the 1st. A birthday on February 3 can therefore belong to the previous year. The calculation, the time-zone handling and the checks against the Korea Astronomy and Space Science Institute tables are explained in How Fate Hall Calculates; the sixty stem-branch pairs are listed in The Sixty Jiazi and Nayin. For a full reading of your own chart, use the BaZi calculator.