Well, the Hijri date 16 Rajab 1213 corresponds to the Gregorian date Sunday, 23 December 1798. This date lies in the seventh month of the Hijri year 1213 AH, which is Rajab of 1213 AH. Both this Hijri and Gregorian date occur on the single day that is Sunday without any doubt. The Arabic date 1213/07/16 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 23 December 1798 to its equivalent Arabic date.
The following is the conversion of the Arabic date 16 Rajab 1213 AH to its equivalent Gregorian date.
وَتَرَكْنَا فِيهَآ ءَايَةًۭ لِّلَّذِينَ يَخَافُونَ ٱلْعَذَابَ ٱلْأَلِيمَ
Surah Adh-Dhaariyat(51:37)