Well, the Hijri date 20 Rabi Al Thani 1156 corresponds to the Gregorian date Thursday, 13 June 1743. This date lies in the fourth month of the Hijri year 1156 AH, which is Rabi Al-Thani of 1156 AH. Both this Hijri and Gregorian date occur on the single day that is Thursday without any doubt. The Arabic date 1156/04/20 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 13 June 1743 to its equivalent Arabic date.
The following is the conversion of the Arabic date 20 Rabi Al Thani 1156 AH to its equivalent Gregorian date.
وَلَا تَطْرُدِ ٱلَّذِينَ يَدْعُونَ رَبَّهُم بِٱلْغَدَوٰةِ وَٱلْعَشِىِّ يُرِيدُونَ وَجْهَهُۥ ۖ مَا عَلَيْكَ مِنْ حِسَابِهِم مِّن شَىْءٍۢ وَمَا مِنْ حِسَابِكَ عَلَيْهِم مِّن شَىْءٍۢ فَتَطْرُدَهُمْ فَتَكُونَ مِنَ ٱلظَّٰلِمِينَ
Repel not those who call upon their Lord at morn and evening, seeking His Countenance. Thou art not accountable for them in aught, nor are they accountable for thee in aught, that thou shouldst repel them and be of the wrong-doers.
Surah Al-An'aam(6:52)