Method and limits
Four Pillars
Four pillars of stem+branch; day stem is the day master.
Zi Wei chart
Read palaces and stars as a whole; structural notes, not forecasts.
Almanac days
Almanac lists are cultural labels, not odds.
Lots
Lots are for fun; today’s lot is stable for the day.
Soul notes
Playful reference only.
Calculation rules
Four Pillars uses Beginning of Spring for the year and solar terms for months. The selected day boundary applies. Zi Wei uses iztro default stars, lunar New Year, and adjusted leap months: days 1–15 use the current month, later days the next. Schools may differ. Engines: lunar-javascript and iztro.
Enter a time already converted to UTC+8 standard time. No overseas time-zone, historical daylight-saving or true-solar-time correction.
Privacy and use
No name, account or email required. Birth details remain in page memory and are removed on clear or reload. They are not stored or added to URLs. Only language preference is saved locally. The site is funded by ads: pages load Adsterra ads in an isolated frame, and Adsterra and its partners may receive your IP and browser information and use cookies for ad delivery and measurement (privacy policy: https://adsterra.com/privacy-policy/). The ad frame cannot read this page, and we never provide birth details or charts to advertisers. Visitors in the EEA, UK or Switzerland must agree before ads load. No analytics or external AI requests are enabled. You can refuse ads with your browser's ad or cookie blocking; the tools keep working.
For cultural exploration and reflection, not scientific prediction or medical, financial or legal decisions.
Method and limits
Shixu is a free set of traditional Chinese metaphysics and almanac tools: BaZi, Zi Wei Dou Shu, an almanac date finder, fortune lots and soul notes, in Traditional Chinese, English and Japanese.
All calculation happens in your browser. Calendar and pillars use lunar-javascript; Zi Wei Dou Shu uses iztro. No name, account or email is required, and no analytics or external AI is used.
FAQ
Can I rely on these charts for decisions?
No. They are a cultural and self-reflection reference, not scientific prediction, and should not guide medical, financial or legal decisions.
Which dates and time zones are supported?
Gregorian 1901–2099, with times entered in UTC+8 standard time. Other time zones, daylight saving and true solar time are not handled automatically.
Is it free?
Yes. Every tool is free and needs no account.