Well, the Hijri date 26 Rajab 1172 corresponds to the Gregorian date Saturday, 24 March 1759. This date lies in the seventh month of the Hijri year 1172 AH, which is Rajab of 1172 AH. Both this Hijri and Gregorian date occur on the single day that is Saturday without any doubt. The Arabic date 1172/07/26 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 24 March 1759 to its equivalent Arabic date.
The following is the conversion of the Arabic date 26 Rajab 1172 AH to its equivalent Gregorian date.
حَتَّىٰٓ إِذَا جَآءُو قَالَ أَكَذَّبْتُم بِـَٔايَٰتِى وَلَمْ تُحِيطُوا۟ بِهَا عِلْمًا أَمَّاذَا كُنتُمْ تَعْمَلُونَ
Till, when they come (before their Lord), He will say: Did ye deny My revelations when ye could not compass them in knowledge, or what was it that ye did?
Surah An-Naml(27:84)