The day you were born has a name.
Enter when and where. We cast your BaZi chart from the sun, not the clock — and show every step.
BORN 8 OCTOBER 1985, 15:20
SINGAPORE
Your clock said 15:20. The sun said 14:27:40.
YANG METAL DAY MASTER — Metal is the principle of structure and refinement: edges, standards, things brought to shape. Read it in the sample report →
EXPLORE
FREE PAGES — NO SIGN-UP ANYWHERETHE FOUR PILLARS — WORKED EXAMPLE, BORN 4 FEBRUARY 2024, 03:30, NEW YORK
NAIVE READING: 癸卯 ✕ — WRONG BY A YEARThe example birth above sits minutes past Li Chun once you account for the time zone, so the year pillar advances. The naive chain — correct the clock first, then read the table — returns the wrong year. Why.
HOW THIS HOUR WAS DERIVED
MOST CALCULATORS STOP AT STEP 3
QUESTIONS
ANSWERED FROM THE PUBLISHED CONVENTIONSWhy does my chart differ from another website’s?
Almost always a convention, not a calculation error — most often the day-boundary rule or whether clock time is corrected to true solar time before the hour branch is read. The comparison corpus shows worked cases.
I don’t know my birth time. Can I still use this?
Yes — you will get three pillars and no hour pillar. The calculator refuses to guess a fourth, because defaulting an unknown time to midnight would quietly manufacture a zi-hour pillar sitting on the most consequential boundary in the chart. A missing pillar is honest; an invented one is not. Cast with “time unknown”.
Do you handle historical time zones and daylight saving?
Yes — historical UTC offsets come from the IANA time zone database, including daylight saving that is long gone. China observed DST in 1986–1991, which shifts charts for that whole cohort on calculators that ignore it. Clock times that DST made ambiguous or non-existent are detected and reported, never silently resolved.
Is my birth data stored?
No database stores it, and there are no accounts. Birth details are computed and discarded; if you buy a report they ride on your Stripe checkout session so the PDF can be generated at download without an account. Details in the privacy policy.
What if I think my chart is wrong?
Check it against the published conventions first — most disagreements are documented school differences, which every honest calculator eventually has to pick a side on. If it is genuinely our error, it is fixed, refunded, and added to the public errata log rather than argued away.
What do I actually get when I buy a report?
An instant PDF download at a permanent link — no account required, nothing that expires. If a link ever fails, reply to your receipt email and we re-issue the report. The complete sample of each report is public — the natal report and the 2027 forecast — so you can read exactly what the writing is like before paying anything — see what the $39 natal report covers in full. Payment runs on Stripe, and checkout is sold through Link, so your card statement will read LINK.COM* — that is this site, not a stranger. Every price on this site is quoted in USD; Stripe may show the equivalent in your local currency at checkout. The 2027 forecast is on sale at $29.