LGPL (GNU LESSER GENERAL PUBLIC LICENSE)
The .NET API Documentation for the Zmanim Libary are of interest to developers interested in using the code, as well as to anyone interested in how some of the zmanim are calculated. For interest of the non .NET developers, the documentation is automatically generated from comments within the source code.
You can also clone the project with Git by running:
$ git clone git://github.com/Yitzchok/Zmanim