Well, the Hijri date 21 Rabi Al Thani 1299 corresponds to the Gregorian date Saturday, 11 March 1882. This date lies in the fourth month of the Hijri year 1299 AH, which is Rabi Al-Thani of 1299 AH. Both this Hijri and Gregorian date occur on the single day that is Saturday without any doubt. The Arabic date 1299/04/21 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 11 March 1882 to its equivalent Arabic date.
The following is the conversion of the Arabic date 21 Rabi Al Thani 1299 AH to its equivalent Gregorian date.
إِنَّ ٱلَّذِينَ تَوَلَّوْا۟ مِنكُمْ يَوْمَ ٱلْتَقَى ٱلْجَمْعَانِ إِنَّمَا ٱسْتَزَلَّهُمُ ٱلشَّيْطَٰنُ بِبَعْضِ مَا كَسَبُوا۟ ۖ وَلَقَدْ عَفَا ٱللَّهُ عَنْهُمْ ۗ إِنَّ ٱللَّهَ غَفُورٌ حَلِيمٌۭ
Lo! those of you who turned back on the day when the two hosts met, Satan alone it was who caused them to backslide, because of some of that which they have earned. Now Allah hath forgiven them. Lo! Allah is Forgiving, Clement.
Surah Aal-i-Imraan(3:155)
