Moon Phase & Eclipse Predictor
Illumination, upcoming lunations and solar/lunar eclipses from Jean Meeus algorithms
Phase angle and illumination come from astronomy-engine. Quarter and eclipse searches walk forward from the chosen UTC epoch.
About this tool
Get moon age, illumination, the next new and full moons, and upcoming solar or lunar eclipses. Jean Meeus algorithms, no API. Moon Phase & Eclipse Predictor runs in the browser on DevTools. There is no signup, and your input stays on this device unless the tool explicitly performs a live network lookup.
What this tool does not do
- Moon Phase & Eclipse Predictor is a free in-browser utility, not a hosted API. It does not keep server-side history and is not a substitute for production verification in your own stack.
How do I use this tool?
How do I use Moon Phase & Eclipse Predictor?
Open Moon Phase & Eclipse Predictor, enter or paste your input, and copy the result. The page works without an account.
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