Well, the Hijri date 11 Rabi Al Thani 1415 corresponds to the Gregorian date Friday, 16 September 1994. This date lies in the fourth month of the Hijri year 1415 AH, which is Rabi Al-Thani of 1415 AH. Both this Hijri and Gregorian date occur on the single day that is Friday without any doubt. The Arabic date 1415/04/11 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 16 September 1994 to its equivalent Arabic date.
The following is the conversion of the Arabic date 11 Rabi Al Thani 1415 AH to its equivalent Gregorian date.
وَبُسَّتِ ٱلْجِبَالُ بَسًّۭا
And the hills are ground to powder
Surah Al-Waaqia(56:5)