Well, the Hijri date 20 Shaban 1157 corresponds to the Gregorian date Sunday, 27 September 1744. This date lies in the eighth month of the Hijri year 1157 AH, which is Shaban of 1157 AH. Both this Hijri and Gregorian date occur on the single day that is Sunday without any doubt. The Arabic date 1157/08/20 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 27 September 1744 to its equivalent Arabic date.
The following is the conversion of the Arabic date 20 Shaban 1157 AH to its equivalent Gregorian date.
۞ وَٱضْرِبْ لَهُم مَّثَلًۭا رَّجُلَيْنِ جَعَلْنَا لِأَحَدِهِمَا جَنَّتَيْنِ مِنْ أَعْنَٰبٍۢ وَحَفَفْنَٰهُمَا بِنَخْلٍۢ وَجَعَلْنَا بَيْنَهُمَا زَرْعًۭا
Coin for them a similitude: Two men, unto one of whom We had assigned two gardens of grapes, and We had surrounded both with date-palms and had put between them tillage.
Surah Al-Kahf(18:32)