Um al-Qura calendar code: Abu Hadi wrote it in the beginning of the nineties between 1992 and 1993 AD and was published on Arabic programming sites on 09/02/2001 AD, and this is to preserve the intellectual right of the programmer after the many users of this code with or without changing the scope and attributing it to them without mentioning the source. Um al-Qura calendar: Hijri astronomical lunar calendar, which is the official calendar for the Saudi Arabia. The first number of the calenda