Compute practical astronomy — sunrise/sunset/solar-noon for any place and date, Moon phase and illumination, Julian Date, sidereal time, converting between equatorial (RA/Dec) and horizon (altitude/azimuth) coordinates, and the angular separation between two objects. Includes a stdlib ephemeris calculator using low-precision analytic formulae (good to ~1 minute for the Sun, arcminutes for coordinates). Use when the user asks when the sun rises/sets, tonight's moon phase, where/whether an object is up right now, an RA/Dec-to-alt-az conversion, sidereal or Julian time, or how far apart two stars are on the sky.
How to install astronomy?
nocetic/flowly/astronomy
$npx -y skills add nocetic/flowly --skill astronomyInstalls into the current project.
›Prefer a prompt? Paste this to your agent
Run `npx skills use "https://github.com/nocetic/flowly" --skill "nocetic/flowly/astronomy"` and follow the generated skill instructions now. Read its complete output, redirecting it to a temporary file first if necessary. Resolve relative paths from the supporting-files directory it provides.
Use the skills in "https://github.com/nocetic/flowly" that are relevant to the current task. Run `npx skills add "https://github.com/nocetic/flowly"` and select the relevant skills, then follow their instructions.
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