Well, the Hijri date 15 Ramadan 1331 corresponds to the Gregorian date Sunday, 17 August 1913. This date lies in the ninth month of the Hijri year 1331 AH, which is Ramadan of 1331 AH. Both this Hijri and Gregorian date occur on the single day that is Sunday without any doubt. The Arabic date 1331/09/15 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 17 August 1913 to its equivalent Arabic date.
The following is the conversion of the Arabic date 15 Ramadan 1331 AH to its equivalent Gregorian date.
هُوَ ٱلَّذِىٓ أَنزَلَ ٱلسَّكِينَةَ فِى قُلُوبِ ٱلْمُؤْمِنِينَ لِيَزْدَادُوٓا۟ إِيمَٰنًۭا مَّعَ إِيمَٰنِهِمْ ۗ وَلِلَّهِ جُنُودُ ٱلسَّمَٰوَٰتِ وَٱلْأَرْضِ ۚ وَكَانَ ٱللَّهُ عَلِيمًا حَكِيمًۭا
He it is Who sent down peace of reassurance into the hearts of the believers that they might add faith unto their faith. Allah's are the hosts of the heavens and the earth, and Allah is ever Knower, Wise -
Surah Al-Fath(48:4)