Well, the Hijri date 21 Shawwal 1197 corresponds to the Gregorian date Thursday, 18 September 1783. This date lies in the tenth month of the Hijri year 1197 AH, which is Shawwal of 1197 AH. Both this Hijri and Gregorian date occur on the single day that is Thursday without any doubt. The Arabic date 1197/10/21 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 18 September 1783 to its equivalent Arabic date.
The following is the conversion of the Arabic date 21 Shawwal 1197 AH to its equivalent Gregorian date.
وَلِلَّهِ يَسْجُدُ مَا فِى ٱلسَّمَٰوَٰتِ وَمَا فِى ٱلْأَرْضِ مِن دَآبَّةٍۢ وَٱلْمَلَٰٓئِكَةُ وَهُمْ لَا يَسْتَكْبِرُونَ
And unto Allah maketh prostration whatsoever is in the heavens and whatsoever is in the earth of living creatures, and the angels (also) and they are not proud.
Surah An-Nahl(16:49)