Well, the Hijri date 20 Shaban 1166 corresponds to the Gregorian date Thursday, 21 June 1753. This date lies in the eighth month of the Hijri year 1166 AH, which is Shaban of 1166 AH. Both this Hijri and Gregorian date occur on the single day that is Thursday without any doubt. The Arabic date 1166/08/20 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 June 1753 to its equivalent Arabic date.
The following is the conversion of the Arabic date 20 Shaban 1166 AH to its equivalent Gregorian date.
إِنَّ ٱللَّهَ لَا يَغْفِرُ أَن يُشْرَكَ بِهِۦ وَيَغْفِرُ مَا دُونَ ذَٰلِكَ لِمَن يَشَآءُ ۚ وَمَن يُشْرِكْ بِٱللَّهِ فَقَدْ ضَلَّ ضَلَٰلًۢا بَعِيدًا
Lo! Allah pardoneth not that partners should be ascribed unto Him. He pardoneth all save that to whom He will. Whoso ascribeth partners unto Allah hath wandered far astray.
Surah An-Nisaa(4:116)