Well, the Hijri date 20 Shaban 1191 corresponds to the Gregorian date Monday, 22 September 1777. This date lies in the eighth month of the Hijri year 1191 AH, which is Shaban of 1191 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1191/08/20 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 22 September 1777 to its equivalent Arabic date.
The following is the conversion of the Arabic date 20 Shaban 1191 AH to its equivalent Gregorian date.
وَلَيْسَتِ ٱلتَّوْبَةُ لِلَّذِينَ يَعْمَلُونَ ٱلسَّيِّـَٔاتِ حَتَّىٰٓ إِذَا حَضَرَ أَحَدَهُمُ ٱلْمَوْتُ قَالَ إِنِّى تُبْتُ ٱلْـَٰٔنَ وَلَا ٱلَّذِينَ يَمُوتُونَ وَهُمْ كُفَّارٌ ۚ أُو۟لَٰٓئِكَ أَعْتَدْنَا لَهُمْ عَذَابًا أَلِيمًۭا
The forgiveness is not for those who do ill-deeds until, when death attendeth upon one of them, he saith: Lo! I repent now; nor yet for those who die while they are disbelievers. For such We have prepared a painful doom.
Surah An-Nisaa(4:18)