Well, the Hijri date 12 Shawwal 1137 corresponds to the Gregorian date Saturday, 23 June 1725. This date lies in the tenth month of the Hijri year 1137 AH, which is Shawwal of 1137 AH. Both this Hijri and Gregorian date occur on the single day that is Saturday without any doubt. The Arabic date 1137/10/12 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 23 June 1725 to its equivalent Arabic date.
The following is the conversion of the Arabic date 12 Shawwal 1137 AH to its equivalent Gregorian date.
وَإِنْ أَرَدتُّمُ ٱسْتِبْدَالَ زَوْجٍۢ مَّكَانَ زَوْجٍۢ وَءَاتَيْتُمْ إِحْدَىٰهُنَّ قِنطَارًۭا فَلَا تَأْخُذُوا۟ مِنْهُ شَيْـًٔا ۚ أَتَأْخُذُونَهُۥ بُهْتَٰنًۭا وَإِثْمًۭا مُّبِينًۭا
And if ye wish to exchange one wife for another and ye have given unto one of them a sum of money (however great), take nothing from it. Would ye take it by the way of calumny and open wrong?
Surah An-Nisaa(4:20)