Well, the Hijri date 21 Rabi Al Awwal 1299 corresponds to the Gregorian date Thursday, 9 February 1882. This date lies in the third month of the Hijri year 1299 AH, which is Rabi Al-Awwal of 1299 AH. Both this Hijri and Gregorian date occur on the single day that is Thursday without any doubt. The Arabic date 1299/03/21 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 9 February 1882 to its equivalent Arabic date.
The following is the conversion of the Arabic date 21 Rabi Al Awwal 1299 AH to its equivalent Gregorian date.
فَبَعَثَ ٱللَّهُ غُرَابًۭا يَبْحَثُ فِى ٱلْأَرْضِ لِيُرِيَهُۥ كَيْفَ يُوَٰرِى سَوْءَةَ أَخِيهِ ۚ قَالَ يَٰوَيْلَتَىٰٓ أَعَجَزْتُ أَنْ أَكُونَ مِثْلَ هَٰذَا ٱلْغُرَابِ فَأُوَٰرِىَ سَوْءَةَ أَخِى ۖ فَأَصْبَحَ مِنَ ٱلنَّٰدِمِينَ
Then Allah sent a raven scratching up the ground, to show him how to hide his brother's naked corpse. He said: Woe unto me! Am I not able to be as this raven and so hide my brother's naked corpse? And he became repentant.
Surah Al-Maaida(5:31)