Well, the Hijri date 22 Rabi Al Awwal 1340 corresponds to the Gregorian date Monday, 21 November 1921. This date lies in the third month of the Hijri year 1340 AH, which is Rabi Al-Awwal of 1340 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1340/03/22 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 21 November 1921 to its equivalent Arabic date.
The following is the conversion of the Arabic date 22 Rabi Al Awwal 1340 AH to its equivalent Gregorian date.
فَجَعَلْنَا عَٰلِيَهَا سَافِلَهَا وَأَمْطَرْنَا عَلَيْهِمْ حِجَارَةًۭ مِّن سِجِّيلٍ
And We utterly confounded them, and We rained upon them stones of heated clay.
Surah Al-Hijr(15:74)