Kosmorro/kosmorro

Astronomy Engine: multi-language calculation of Sun, Moon, and planet positions. Predicts lunar phases, eclipses, transits, oppositions, conjunctions, equinoxes, solstices, rise/set times, and other events. Provides vector and angular coordinate transforms among equatorial, ecliptic, horizontal, and galactic orientations.

See the apparent positions of the Sun, Moon, and planets in this home assistant custom component

A planetarium for your terminal! Explore stars, planets, constellations, and more, all rendered right in the command line—no telescope required. ✨🪐

Calculates the best astro photography targets for the night at a given location

24 hr sun clock

A tiny JavaScript library for calculating sun/moon positions and phases.

Astronomy and astrometry Ruby library for astronomical data and events

Astro: Go Astronomy Algorithms Library - Chinese Lunar Calendar, Solar/Lunar Eclipses, Sun/Moon/Planet Positions, Rise/Set, Planet Events, Stars, Coordinates, Orbits, Sundials and Lightweight Ephemerides (天文算法 Go 库：农历、日月食、日月行星位置、升落、行星天象、恒星、坐标、轨道、日晷与轻量星历)

Landscape Astrophotography and dark-sky planner — predicts weather, lunar cycles, Milky Way visibility, light pollution, meteor showrs, and Auroras. It finds nearby dark-sky sites, and best nights.