Well, the Hijri date 12 Shaban 1337 corresponds to the Gregorian date Monday, 12 May 1919. This date lies in the eighth month of the Hijri year 1337 AH, which is Shaban of 1337 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1337/08/12 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 12 May 1919 to its equivalent Arabic date.
The following is the conversion of the Arabic date 12 Shaban 1337 AH to its equivalent Gregorian date.
قَدْ مَكَرَ ٱلَّذِينَ مِن قَبْلِهِمْ فَأَتَى ٱللَّهُ بُنْيَٰنَهُم مِّنَ ٱلْقَوَاعِدِ فَخَرَّ عَلَيْهِمُ ٱلسَّقْفُ مِن فَوْقِهِمْ وَأَتَىٰهُمُ ٱلْعَذَابُ مِنْ حَيْثُ لَا يَشْعُرُونَ
Those before them plotted, so Allah struck at the foundations of their building, and then the roof fell down upon them from above them, and the doom came on them whence they knew not;
Surah An-Nahl(16:26)