An educational astronomy calculation toolkit with a soul. Show your work with --verbose mode. Sun/Moon positions, rise/set times, twilight, phases, coordinate transforms, Julian dates, and visibility planning. Pure Python, no compiled dependencies.
python cli astronomy coordinate-systems visibility educational ephemeris julian-date sidereal-time celestial-mechanics moon-phases sun-moon astronomy-calculator rise-set
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Updated
Feb 5, 2026 - Python