Well, the Hijri date 16 Ramadan 1230 corresponds to the Gregorian date Monday, 21 August 1815. This date lies in the ninth month of the Hijri year 1230 AH, which is Ramadan of 1230 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1230/09/16 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 August 1815 to its equivalent Arabic date.
The following is the conversion of the Arabic date 16 Ramadan 1230 AH to its equivalent Gregorian date.
وَيَقُولُونَ ءَامَنَّا بِٱللَّهِ وَبِٱلرَّسُولِ وَأَطَعْنَا ثُمَّ يَتَوَلَّىٰ فَرِيقٌۭ مِّنْهُم مِّنۢ بَعْدِ ذَٰلِكَ ۚ وَمَآ أُو۟لَٰٓئِكَ بِٱلْمُؤْمِنِينَ
And they say: We believe in Allah and the messenger, and we obey; then after that a faction of them turn away. Such are not believers.
Surah An-Noor(24:47)