Well, the Hijri date 29 Ramadan 1523 corresponds to the Gregorian date Friday, 11 December 2099. This date lies in the ninth month of the Hijri year 1523 AH, which is Ramadan of 1523 AH. Both this Hijri and Gregorian date occur on the single day that is Friday without any doubt. The Arabic date 1523/09/29 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 11 December 2099 to its equivalent Arabic date.
The following is the conversion of the Arabic date 29 Ramadan 1523 AH to its equivalent Gregorian date.
فَعَقَرُوا۟ ٱلنَّاقَةَ وَعَتَوْا۟ عَنْ أَمْرِ رَبِّهِمْ وَقَالُوا۟ يَٰصَٰلِحُ ٱئْتِنَا بِمَا تَعِدُنَآ إِن كُنتَ مِنَ ٱلْمُرْسَلِينَ
So they hamstrung the she-camel, and they flouted the commandment of their Lord, and they said: O Salih! Bring upon us that thou threatenest if thou art indeed of those sent (from Allah).
Surah Al-A'raaf(7:77)