Almanac & sky · NUMORA
Ganzhi Day Calculator
The day pillar. The page for “what’s today’s gan-zhi?”
Open interactive calculatorHow to use
From Julian day.
Formula
stem = (JD+9) mod 10; branch = (JD+1) mod 12
FAQ
Is this Ganzhi Day 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?
From Julian day.
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