Well, the Hijri date 21 Rabi Al Awwal 1324 corresponds to the Gregorian date Monday, 14 May 1906. This date lies in the third month of the Hijri year 1324 AH, which is Rabi Al-Awwal of 1324 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1324/03/21 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 14 May 1906 to its equivalent Arabic date.
The following is the conversion of the Arabic date 21 Rabi Al Awwal 1324 AH to its equivalent Gregorian date.
وَلَقَدْ صَرَّفْنَا فِى هَٰذَا ٱلْقُرْءَانِ لِيَذَّكَّرُوا۟ وَمَا يَزِيدُهُمْ إِلَّا نُفُورًۭا
We verily have displayed (Our warnings) in this Qur'an that they may take heed, but it increaseth them in naught save aversion.
Surah Al-Israa(17:41)