Well, the Hijri date 18 Rabi Al Awwal 1321 corresponds to the Gregorian date Saturday, 13 June 1903. This date lies in the third month of the Hijri year 1321 AH, which is Rabi Al-Awwal of 1321 AH. Both this Hijri and Gregorian date occur on the single day that is Saturday without any doubt. The Arabic date 1321/03/18 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 13 June 1903 to its equivalent Arabic date.
The following is the conversion of the Arabic date 18 Rabi Al Awwal 1321 AH to its equivalent Gregorian date.
وَلَقَدْ خَلَقْنَا ٱلسَّمَٰوَٰتِ وَٱلْأَرْضَ وَمَا بَيْنَهُمَا فِى سِتَّةِ أَيَّامٍۢ وَمَا مَسَّنَا مِن لُّغُوبٍۢ
And verily We created the heavens and the earth, and all that is between them, in six Days, and naught of weariness touched Us.
Surah Qaaf(50:38)