Well, the Hijri date 13 Rajab 1181 corresponds to the Gregorian date Friday, 4 December 1767. This date lies in the seventh month of the Hijri year 1181 AH, which is Rajab of 1181 AH. Both this Hijri and Gregorian date occur on the single day that is Friday without any doubt. The Arabic date 1181/07/13 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 4 December 1767 to its equivalent Arabic date.
The following is the conversion of the Arabic date 13 Rajab 1181 AH to its equivalent Gregorian date.
ذَٰلِكَ فَضْلُ ٱللَّهِ يُؤْتِيهِ مَن يَشَآءُ ۚ وَٱللَّهُ ذُو ٱلْفَضْلِ ٱلْعَظِيمِ
That is the bounty of Allah; which He giveth unto whom He will. Allah is of Infinite Bounty.
Surah Al-Jumu'a(62:4)