Standalone version of the yr.no Astronomical almanac algorithm, including a JavaScript client.
Online demonstration at http://astro.met.no/astro .
Documentation at https://github.com/FrankThomasTveter/astro-api/wiki .
Documentation includes installation instructions for Docker and Ubuntu Xenial, along with instructions on how to compose the URL to retrieve the astronomical data on XML format.