Well, the Hijri date 15 Rabi Al Awwal 1156 corresponds to the Gregorian date Thursday, 9 May 1743. This date lies in the third month of the Hijri year 1156 AH, which is Rabi Al-Awwal of 1156 AH. Both this Hijri and Gregorian date occur on the single day that is Thursday without any doubt. The Arabic date 1156/03/15 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 9 May 1743 to its equivalent Arabic date.
The following is the conversion of the Arabic date 15 Rabi Al Awwal 1156 AH to its equivalent Gregorian date.
ٱلْحَجُّ أَشْهُرٌۭ مَّعْلُومَٰتٌۭ ۚ فَمَن فَرَضَ فِيهِنَّ ٱلْحَجَّ فَلَا رَفَثَ وَلَا فُسُوقَ وَلَا جِدَالَ فِى ٱلْحَجِّ ۗ وَمَا تَفْعَلُوا۟ مِنْ خَيْرٍۢ يَعْلَمْهُ ٱللَّهُ ۗ وَتَزَوَّدُوا۟ فَإِنَّ خَيْرَ ٱلزَّادِ ٱلتَّقْوَىٰ ۚ وَٱتَّقُونِ يَٰٓأُو۟لِى ٱلْأَلْبَٰبِ
The pilgrimage is (in) the well-known months, and whoever is minded to perform the pilgrimage therein (let him remember that) there is (to be) no lewdness nor abuse nor angry conversation on the pilgrimage. And whatsoever good ye do Allah knoweth it. So make provision for yourselves (Hereafter); for the best provision is to ward off evil. Therefore keep your duty unto Me, O men of understanding.
Surah Al-Baqara(2:197)