Well, the Hijri date 21 Shaban 1230 corresponds to the Gregorian date Friday, 28 July 1815. This date lies in the eighth month of the Hijri year 1230 AH, which is Shaban of 1230 AH. Both this Hijri and Gregorian date occur on the single day that is Friday without any doubt. The Arabic date 1230/08/21 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 28 July 1815 to its equivalent Arabic date.
The following is the conversion of the Arabic date 21 Shaban 1230 AH to its equivalent Gregorian date.
وَلِلَّهِ مُلْكُ ٱلسَّمَٰوَٰتِ وَٱلْأَرْضِ ۚ يَغْفِرُ لِمَن يَشَآءُ وَيُعَذِّبُ مَن يَشَآءُ ۚ وَكَانَ ٱللَّهُ غَفُورًۭا رَّحِيمًۭا
And Allah's is the Sovereignty of the heavens and the earth. He forgiveth whom He will, and punisheth whom He will. And Allah is ever Forgiving, Merciful.
Surah Al-Fath(48:14)