This Urdu Calendar 2017 also included Islamic Calendar 2017 Based on Lunar Hijri Calendar. Urdu Calendar 2017 brings you current month Indian Urdu Calendar, Islamic calendar based on lunar Hijri calendar and also Gregorian dates alongside. This app is useful for Muslim and Islamic community in India and worldwide. The Islamic world calendar is based on Lunar Hijri calculations by Umm al-Qura of Saudi Arabia. This is most referred calendar system in world by Muslim communities. Apart from the calendar there will be important dates based on Hijri year, Islamic festivals and observances.