Well, the Hijri date 20 Dhul Hijjah 1200 corresponds to the Gregorian date Friday, 13 October 1786. This date lies in the twelfth month of the Hijri year 1200 AH, which is Dhu Al-Hijjah of 1200 AH. Both this Hijri and Gregorian date occur on the single day that is Friday without any doubt. The Arabic date 1200/12/20 is calculated using the Umm Al-Qura calendar and the sighting of the moon. One thing to remember is that this Arabic date may occur on different Gregorian date depending upon the region and country and obviously the moon.
If you are still not sure about the date then you can use our Arabic date converter.
The following is the conversion of the Gregorian date 13 October 1786 to its equivalent Arabic date.
The following is the conversion of the Arabic date 20 Dhul Hijjah 1200 AH to its equivalent Gregorian date.
مَن كَانَ يَظُنُّ أَن لَّن يَنصُرَهُ ٱللَّهُ فِى ٱلدُّنْيَا وَٱلْءَاخِرَةِ فَلْيَمْدُدْ بِسَبَبٍ إِلَى ٱلسَّمَآءِ ثُمَّ لْيَقْطَعْ فَلْيَنظُرْ هَلْ يُذْهِبَنَّ كَيْدُهُۥ مَا يَغِيظُ
Whoso is wont to think (through envy) that Allah will not give him (Muhammad) victory in the world and the Hereafter (and is enraged at the thought of his victory), let him stretch a rope up to the roof (of his dwelling), and let him hang himself. Then let him see whether his strategy dispelleth that whereat he rageth!.
Surah Al-Hajj(22:15)