Almanac & sky · NUMORA
Lunar Return Calculator
Moon back to natal longitude.
Open interactive calculatorHow to use
About every 27.3 days.
Formula
λ☾(t) = natal λ☾
FAQ
Is this Lunar Return 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?
About every 27.3 days.
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