Well, the Hijri date 15 Dhul Hijjah 1521 corresponds to the Gregorian date Monday, 17 March 2098. This date lies in the twelfth month of the Hijri year 1521 AH, which is Dhu Al-Hijjah of 1521 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1521/12/15 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 March 2098 to its equivalent Arabic date.
The following is the conversion of the Arabic date 15 Dhul Hijjah 1521 AH to its equivalent Gregorian date.
لَهُۥ مُعَقِّبَٰتٌۭ مِّنۢ بَيْنِ يَدَيْهِ وَمِنْ خَلْفِهِۦ يَحْفَظُونَهُۥ مِنْ أَمْرِ ٱللَّهِ ۗ إِنَّ ٱللَّهَ لَا يُغَيِّرُ مَا بِقَوْمٍ حَتَّىٰ يُغَيِّرُوا۟ مَا بِأَنفُسِهِمْ ۗ وَإِذَآ أَرَادَ ٱللَّهُ بِقَوْمٍۢ سُوٓءًۭا فَلَا مَرَدَّ لَهُۥ ۚ وَمَا لَهُم مِّن دُونِهِۦ مِن وَالٍ
For him are angels ranged before him and behind him, who guard him by Allah's command. Lo! Allah changeth not the condition of a folk until they (first) change that which is in their hearts; and if Allah willeth misfortune for a folk there is none that can repel it, nor have they a defender beside Him.
Surah Ar-Ra'd(13:11)