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Build the Four Pillars
Birth year, month, day, and hour are converted into Heavenly Stems and Earthly Branches.
Enter your birth details to see your Da Yun timeline, current 10-year luck cycle, and the elements shaping this decade.
The 10-Year Luck Calculator gives you powerful insights without signing up. Here is what is included.
Method
Da Yun is derived from the birth chart, gender, yin-yang direction, and the solar-term boundary around birth. This tool shows the timing layer first, then lets users decide whether they need a deeper paid interpretation.
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Birth year, month, day, and hour are converted into Heavenly Stems and Earthly Branches.
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The calculation determines whether cycles move forward or backward and when the first decade begins.
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Each 10-year pillar is shown with age range, elements, and the current cycle highlight.
Reading guide
A useful 10-year luck reading should not stop at a list of pillars. Start with the current decade, then compare the element trend, Ten God relationship, annual markers, and the next cycle shift.
The highlighted Da Yun shows the decade you are living through now. Read it as the long-term climate behind career moves, relationship timing, relocation, and financial decisions.
The Heavenly Stem of each luck cycle forms a Ten God relationship to your Day Master. This helps translate the cycle into themes like output, wealth, authority, support, or competition.
A strong decade can still contain cautious years, and a difficult decade can contain useful openings. The annual trend view helps separate the decade theme from yearly opportunities.
The years around a Da Yun change often feel different before the exact boundary. Comparing the current and next cycle helps you prepare instead of reacting late.
The 10-Year Luck Calculator gives you powerful insights without signing up. Here is what is included.
See every 10-year luck cycle from birth onward. Tap any cycle to reveal its Heavenly Stem, Earthly Branch, hidden stems, and Ten God relationship.
Watch how the five elements — Wood, Fire, Earth, Metal, Water — shift across your life cycles in an interactive stacked-bar chart.
Know exactly where you are in your current cycle with a progress bar, and see how upcoming years relate to your luck pillar.
Select any two cycles and compare them side-by-side — see how elements, Ten Gods, and life themes change between periods.
Accuracy notes
The strongest competing tools explain their assumptions clearly. This page surfaces the inputs that can change a chart so users can tell whether their result is precise enough for deeper interpretation.
If your recorded time is close to 23:00, 01:00, 03:00, or another two-hour branch boundary, even a small correction can change the Hour Pillar and downstream reading.
Clock time and local solar time can differ substantially when the birthplace is far from the timezone meridian. True solar time helps correct that difference.
BaZi month pillars and Da Yun start timing follow solar terms. This is why the first luck cycle does not simply begin on a birthday or lunar new year.
Free vs full report
The public calculator should be genuinely useful for search users, while the paid report remains valuable for interpretation depth and saved chart context.
Use cases
Different visitors arrive with different intent. Some only need the Da Yun table; others want to validate timing before buying a deeper reading.
Use it when you only need the current luck cycle, start age, and decade sequence without creating an account.
Compare decade themes with annual category trends before planning a role change, business move, or study direction.
Students can inspect Four Pillars, hidden stems, Ten Gods, element shifts, and cycle logic in one screen.
Before unlocking a full reading, confirm the birth data, true solar time, current cycle, and next-cycle transition look right.
About this tool
Every calculation — Day Master strength, cycle ordering, starting age — follows documented rules from canonical BaZi texts.
True solar time corrects for longitude. Forward/reverse ordering respects gender and birth-year Yin/Yang. Starting age is derived from solar-term proximity. Every parameter is explained in the advanced options.
Our algorithms follow the ZiPing tradition: 《渊海子平》《三命通会》《滴天髓》《穷通宝鉴》.
Disclaimer: For educational and entertainment purposes only. BaZi is a traditional cultural practice, not a substitute for professional advice.
FAQ
A 10-year luck cycle, or Da Yun, is a decade-level timing pillar used to read the changing environment around a BaZi chart.
Traditional Da Yun direction depends on gender and the yin-yang quality of the birth-year stem, so the same birth date can produce a different sequence.
No. The free calculator shows the table, current cycle, and a short element summary. Paid reports interpret the whole chart and timing interaction in depth.
For BaZi, true solar time can matter when birth time is close to a two-hour boundary. Use longitude values when accuracy is important.
Tools may use different solar-term data, rounding rules, true solar time settings, or forward/reverse conventions. Check whether the calculator explains these assumptions before comparing results.
Use it as timing context, not as the only basis for a major decision. Career, financial, medical, or legal choices should still rely on qualified professional advice.
The public page gives users a useful free result and keeps the deeper report as an intentional upgrade path.