Well, the Hijri date 21 Shaban 1317 corresponds to the Gregorian date Sunday, 24 December 1899. This date lies in the eighth month of the Hijri year 1317 AH, which is Shaban of 1317 AH. Both this Hijri and Gregorian date occur on the single day that is Sunday without any doubt. The Arabic date 1317/08/21 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 24 December 1899 to its equivalent Arabic date.
The following is the conversion of the Arabic date 21 Shaban 1317 AH to its equivalent Gregorian date.
أَوَلَمْ يَعْلَمُوٓا۟ أَنَّ ٱللَّهَ يَبْسُطُ ٱلرِّزْقَ لِمَن يَشَآءُ وَيَقْدِرُ ۚ إِنَّ فِى ذَٰلِكَ لَءَايَٰتٍۢ لِّقَوْمٍۢ يُؤْمِنُونَ
Know they not that Allah enlargeth providence for whom He will, and straiteneth it (for whom He will). Lo! herein verily are portents for people who believe.
Surah Az-Zumar(39:52)