Well, the Hijri date 9 Rabi Al Thani 1129 corresponds to the Gregorian date Monday, 22 March 1717. This date lies in the fourth month of the Hijri year 1129 AH, which is Rabi Al-Thani of 1129 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1129/04/09 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 22 March 1717 to its equivalent Arabic date.
The following is the conversion of the Arabic date 9 Rabi Al Thani 1129 AH to its equivalent Gregorian date.
يَٰنِسَآءَ ٱلنَّبِىِّ مَن يَأْتِ مِنكُنَّ بِفَٰحِشَةٍۢ مُّبَيِّنَةٍۢ يُضَٰعَفْ لَهَا ٱلْعَذَابُ ضِعْفَيْنِ ۚ وَكَانَ ذَٰلِكَ عَلَى ٱللَّهِ يَسِيرًۭا
O ye wives of the Prophet! Whosoever of you committeth manifest lewdness, the punishment for her will be doubled, and that is easy for Allah.
Surah Al-Ahzaab(33:30)