observerly’s lightweight, zero-dependency, type-safe astrometry library for TypeScript. Accurately determine the positions of the Sun, Moon, and planets, handle coordinate transformations with ease, calculate transit times for any celestial object, and integrate precision astronomy into your projects with clean, dependency-free code.
Utilities to process GTFS (General Transit Feed Specification) data and GTFS-realtime feeds. It is designed for easy integration into Go projects to ingest, transform, and use both static and real-time transit data.