Blog

Behind the Moon Tool

The thinking and the maths behind how the tool is built.

Engineering

How the Moon Tool Calculates the Phase (No API)

There's no astronomy API behind this tool — just well-known orbital maths running in your browser.

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Why We Built an Offline Moon Tool

A moon-phase tool is the perfect candidate for zero-API, zero-tracking, works-anywhere design.

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Prefer the articles? See the Moon Phase articles, or open the Moon Phase tool.