Well, the Hijri date 19 Shaban 1221 corresponds to the Gregorian date Friday, 31 October 1806. This date lies in the eighth month of the Hijri year 1221 AH, which is Shaban of 1221 AH. Both this Hijri and Gregorian date occur on the single day that is Friday without any doubt. The Arabic date 1221/08/19 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 31 October 1806 to its equivalent Arabic date.
The following is the conversion of the Arabic date 19 Shaban 1221 AH to its equivalent Gregorian date.
فَأَذَاقَهُمُ ٱللَّهُ ٱلْخِزْىَ فِى ٱلْحَيَوٰةِ ٱلدُّنْيَا ۖ وَلَعَذَابُ ٱلْءَاخِرَةِ أَكْبَرُ ۚ لَوْ كَانُوا۟ يَعْلَمُونَ
Thus Allah made them taste humiliation in the life of the world, and verily the doom of the Hereafter will be greater if they did but know.
Surah Az-Zumar(39:26)