Based on the Saudi Arabia's Cabinet decision number 551 (link). The fifth of every solar hijri month is the official payday for government employees.
Since Umm al qura solar differ from Persian solar, and iPhone SDK only support the Persian solar in
NSDate, the dates was scraped from link and hard coded inside the app as json file.
The scraping done using a forked version of @engineer_fouad "Hijri-Gregorian-Solar_Hijri. The modification done on it is to produce limited size json file instead of complete CSV file to reduce size and for easy deserialization.
The application use "MZFormSheetPresentationController".