Well, the Hijri date 15 Rabi Al Awwal 1340 corresponds to the Gregorian date Monday, 14 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 1340/03/15 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 November 1921 to its equivalent Arabic date.
The following is the conversion of the Arabic date 15 Rabi Al Awwal 1340 AH to its equivalent Gregorian date.
وَلَمَّا فَتَحُوا۟ مَتَٰعَهُمْ وَجَدُوا۟ بِضَٰعَتَهُمْ رُدَّتْ إِلَيْهِمْ ۖ قَالُوا۟ يَٰٓأَبَانَا مَا نَبْغِى ۖ هَٰذِهِۦ بِضَٰعَتُنَا رُدَّتْ إِلَيْنَا ۖ وَنَمِيرُ أَهْلَنَا وَنَحْفَظُ أَخَانَا وَنَزْدَادُ كَيْلَ بَعِيرٍۢ ۖ ذَٰلِكَ كَيْلٌۭ يَسِيرٌۭ
And when they opened their belongings they discovered that their merchandise had been returned to them. They said: O our father! What (more) can we ask? Here is our merchandise returned to us. We shall get provision for our folk and guard our brother, and we shall have the extra measure of a camel (load). This (that we bring now) is a light measure.
Surah Yusuf(12:65)