Well, the Hijri date 20 Shaban 1149 corresponds to the Gregorian date Sunday, 23 December 1736. This date lies in the eighth month of the Hijri year 1149 AH, which is Shaban of 1149 AH. Both this Hijri and Gregorian date occur on the single day that is Sunday without any doubt. The Arabic date 1149/08/20 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 23 December 1736 to its equivalent Arabic date.
The following is the conversion of the Arabic date 20 Shaban 1149 AH to its equivalent Gregorian date.
يَعْلَمُ مَا فِى ٱلسَّمَٰوَٰتِ وَٱلْأَرْضِ وَيَعْلَمُ مَا تُسِرُّونَ وَمَا تُعْلِنُونَ ۚ وَٱللَّهُ عَلِيمٌۢ بِذَاتِ ٱلصُّدُورِ
He knoweth all that is in the heavens and the earth, and He knoweth what ye conceal and what ye publish. And Allah is Aware of what is in the breasts (of men).
Surah At-Taghaabun(64:4)