Well, the Hijri date 21 Rajab 1123 corresponds to the Gregorian date Thursday, 3 September 1711. This date lies in the seventh month of the Hijri year 1123 AH, which is Rajab of 1123 AH. Both this Hijri and Gregorian date occur on the single day that is Thursday without any doubt. The Arabic date 1123/07/21 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 3 September 1711 to its equivalent Arabic date.
The following is the conversion of the Arabic date 21 Rajab 1123 AH to its equivalent Gregorian date.
وَأَرْسَلْنَا ٱلرِّيَٰحَ لَوَٰقِحَ فَأَنزَلْنَا مِنَ ٱلسَّمَآءِ مَآءًۭ فَأَسْقَيْنَٰكُمُوهُ وَمَآ أَنتُمْ لَهُۥ بِخَٰزِنِينَ
And We send the winds fertilising, and cause water to descend from the sky, and give it you to drink. It is not ye who are the holders of the store thereof.
Surah Al-Hijr(15:22)