Almanac & sky · NUMORA
Sansha Calculator
Three-sha of the year.
Open interactive calculatorHow to use
Four groups by year branch.
Formula
Four triangular groups
FAQ
Is this Sansha calculator accurate?
The formula and assumptions are shown on the page, and the engine is covered by audit tests. Results are for reference — not financial or medical advice.
Do I need an account?
No. Calculations run in your browser. Recents can stay on this device.
What inputs do I need?
Four groups by year branch.
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