Islamic_date is a project mainly written in Ruby, based on the MIT license.
Islamic Date plugin for rails.
To use this plugin, you have to go to Islamicfinder.org. The URL is http://www.islamicfinder.org/prayer_search.php#2.
Once you generate the code for your specific area, get the url that the frame is pointing to and copy it.
In environment.rb, ABOVE Rails::Initializer.run do |config|, put:
ISLAMIC_DATE_FILE = "[your URL]"
Lastly, run the following code inside your applications directory:
script/plugin install git://github.com:abdulvayani/islamic_date.git
Released under the MIT license.