Well, the Hijri date 4 Rajab 1198 corresponds to the Gregorian date Sunday, 23 May 1784. This date lies in the seventh month of the Hijri year 1198 AH, which is Rajab of 1198 AH. Both this Hijri and Gregorian date occur on the single day that is Sunday without any doubt. The Arabic date 1198/07/04 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 May 1784 to its equivalent Arabic date.
The following is the conversion of the Arabic date 4 Rajab 1198 AH to its equivalent Gregorian date.
۞ وَإِذَا صُرِفَتْ أَبْصَٰرُهُمْ تِلْقَآءَ أَصْحَٰبِ ٱلنَّارِ قَالُوا۟ رَبَّنَا لَا تَجْعَلْنَا مَعَ ٱلْقَوْمِ ٱلظَّٰلِمِينَ
And when their eyes are turned toward the dwellers of the Fire, they say: Our Lord! Place us not with the wrong-doing folk.
Surah Al-A'raaf(7:47)