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USNO Astronomical Applications API

The USNO Astronomical Applications API provides a way to query the Astronomical Applications Department for data and images. The API allows users to query the USNO calculators to integrate within a Web page or mobile application. This includes services to; generate a cylindrical map of the Earth, create a view of the Earth with daytime and nighttime areas shaded, compute the dates and times of a list of primary moon phases and more.