Well, the Hijri date 1 Rajab 1129 corresponds to the Gregorian date Thursday, 10 June 1717. This date lies in the seventh month of the Hijri year 1129 AH, which is Rajab of 1129 AH. Both this Hijri and Gregorian date occur on the single day that is Thursday without any doubt. The Arabic date 1129/07/01 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 10 June 1717 to its equivalent Arabic date.
The following is the conversion of the Arabic date 1 Rajab 1129 AH to its equivalent Gregorian date.
وَجَعَلْنَٰهُمْ أَئِمَّةًۭ يَهْدُونَ بِأَمْرِنَا وَأَوْحَيْنَآ إِلَيْهِمْ فِعْلَ ٱلْخَيْرَٰتِ وَإِقَامَ ٱلصَّلَوٰةِ وَإِيتَآءَ ٱلزَّكَوٰةِ ۖ وَكَانُوا۟ لَنَا عَٰبِدِينَ
And We made them chiefs who guide by Our command, and We inspired in them the doing of good deeds and the right establishment of worship and the giving of alms, and they were worshippers of Us (alone).
Surah Al-Anbiyaa(21:73)