Well, the Hijri date 11 Shaban 1605 corresponds to the Gregorian date Monday, 17 May 2179. This date lies in the eighth month of the Hijri year 1605 AH, which is Shaban of 1605 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1605/08/11 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 17 May 2179 to its equivalent Arabic date.
The following is the conversion of the Arabic date 11 Shaban 1605 AH to its equivalent Gregorian date.
فَٱنظُرْ كَيْفَ كَانَ عَٰقِبَةُ مَكْرِهِمْ أَنَّا دَمَّرْنَٰهُمْ وَقَوْمَهُمْ أَجْمَعِينَ
Then see the nature of the consequence of their plotting, for lo! We destroyed them and their people, every one.
Surah An-Naml(27:51)