Well, the Hijri date 21 Rajab 1315 corresponds to the Gregorian date Wednesday, 15 December 1897. This date lies in the seventh month of the Hijri year 1315 AH, which is Rajab of 1315 AH. Both this Hijri and Gregorian date occur on the single day that is Wednesday without any doubt. The Arabic date 1315/07/21 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 15 December 1897 to its equivalent Arabic date.
The following is the conversion of the Arabic date 21 Rajab 1315 AH to its equivalent Gregorian date.
إِنَّا جَعَلْنَٰهَا فِتْنَةًۭ لِّلظَّٰلِمِينَ
Lo! We have appointed it a torment for wrong-doers.
Surah As-Saaffaat(37:63)