Well, the Hijri date 29 Rabi Al Thani 1188 corresponds to the Gregorian date Friday, 8 July 1774. This date lies in the fourth month of the Hijri year 1188 AH, which is Rabi Al-Thani of 1188 AH. Both this Hijri and Gregorian date occur on the single day that is Friday without any doubt. The Arabic date 1188/04/29 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 8 July 1774 to its equivalent Arabic date.
The following is the conversion of the Arabic date 29 Rabi Al Thani 1188 AH to its equivalent Gregorian date.
ذَٰلِكَ بِأَنَّ ٱللَّهَ نَزَّلَ ٱلْكِتَٰبَ بِٱلْحَقِّ ۗ وَإِنَّ ٱلَّذِينَ ٱخْتَلَفُوا۟ فِى ٱلْكِتَٰبِ لَفِى شِقَاقٍۭ بَعِيدٍۢ
That is because Allah hath revealed the Scripture with the truth. Lo! those who find (a cause of) disagreement in the Scripture are in open schism.
Surah Al-Baqara(2:176)