A library designed to ease geographic coordinate format conversions, and determine sun/moon information in C#

Custom solar eclipse viewer, with lots of info about the eclipse specific to your location.

Library of astronomical algorithms in Python

A Swift package for astronomy

Arduino library to calculate the times of sunrise, sunset, solar noon, twilight, the solar position, and more.

Javascript library for positional astronomy

A Rust native library for astronomical calculations, a libnova-oxi shortly

moon and seasons clocks, script for calculating moon phases and equinoxes/solstices

An astronomical library

Library of astronomical algorithms in Python to compute planets ephemeris and phenomena

C# Astronomy Library

Java port of Ephemeris calculations by Peter Hayes