Well, the Hijri date 23 Muharram 1199 corresponds to the Gregorian date Sunday, 5 December 1784. This date lies in the first month of the Hijri year 1199 AH, which is Muharram of 1199 AH. Both this Hijri and Gregorian date occur on the single day that is Sunday without any doubt. The Arabic date 1199/01/23 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 5 December 1784 to its equivalent Arabic date.
The following is the conversion of the Arabic date 23 Muharram 1199 AH to its equivalent Gregorian date.
وَحُشِرَ لِسُلَيْمَٰنَ جُنُودُهُۥ مِنَ ٱلْجِنِّ وَٱلْإِنسِ وَٱلطَّيْرِ فَهُمْ يُوزَعُونَ
And there were gathered together unto Solomon his armies of the jinn and humankind, and of the birds, and they were set in battle order;
Surah An-Naml(27:17)