Well, the Hijri date 21 Rajab 1299 corresponds to the Gregorian date Wednesday, 7 June 1882. This date lies in the seventh month of the Hijri year 1299 AH, which is Rajab of 1299 AH. Both this Hijri and Gregorian date occur on the single day that is Wednesday without any doubt. The Arabic date 1299/07/21 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 7 June 1882 to its equivalent Arabic date.
The following is the conversion of the Arabic date 21 Rajab 1299 AH to its equivalent Gregorian date.
أَمَّن جَعَلَ ٱلْأَرْضَ قَرَارًۭا وَجَعَلَ خِلَٰلَهَآ أَنْهَٰرًۭا وَجَعَلَ لَهَا رَوَٰسِىَ وَجَعَلَ بَيْنَ ٱلْبَحْرَيْنِ حَاجِزًا ۗ أَءِلَٰهٌۭ مَّعَ ٱللَّهِ ۚ بَلْ أَكْثَرُهُمْ لَا يَعْلَمُونَ
Is not He (best) Who made the earth a fixed abode, and placed rivers in the folds thereof, and placed firm hills therein, and hath set a barrier between the two seas? Is there any Allah beside Allah? Nay, but most of them know not!
Surah An-Naml(27:61)