Well, the Hijri date 13 Shawwal 1140 corresponds to the Gregorian date Saturday, 22 May 1728. This date lies in the tenth month of the Hijri year 1140 AH, which is Shawwal of 1140 AH. Both this Hijri and Gregorian date occur on the single day that is Saturday without any doubt. The Arabic date 1140/10/13 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 22 May 1728 to its equivalent Arabic date.
The following is the conversion of the Arabic date 13 Shawwal 1140 AH to its equivalent Gregorian date.
ٱرْجِعْ إِلَيْهِمْ فَلَنَأْتِيَنَّهُم بِجُنُودٍۢ لَّا قِبَلَ لَهُم بِهَا وَلَنُخْرِجَنَّهُم مِّنْهَآ أَذِلَّةًۭ وَهُمْ صَٰغِرُونَ
Return unto them. We verily shall come unto them with hosts that they cannot resist, and we shall drive them out from thence with shame, and they will be abased.
Surah An-Naml(27:37)