Well, the Hijri date 15 Rabi Al Awwal 1192 corresponds to the Gregorian date Sunday, 12 April 1778. This date lies in the third month of the Hijri year 1192 AH, which is Rabi Al-Awwal of 1192 AH. Both this Hijri and Gregorian date occur on the single day that is Sunday without any doubt. The Arabic date 1192/03/15 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 12 April 1778 to its equivalent Arabic date.
The following is the conversion of the Arabic date 15 Rabi Al Awwal 1192 AH to its equivalent Gregorian date.
وَلَمَّا جَآءَ مُوسَىٰ لِمِيقَٰتِنَا وَكَلَّمَهُۥ رَبُّهُۥ قَالَ رَبِّ أَرِنِىٓ أَنظُرْ إِلَيْكَ ۚ قَالَ لَن تَرَىٰنِى وَلَٰكِنِ ٱنظُرْ إِلَى ٱلْجَبَلِ فَإِنِ ٱسْتَقَرَّ مَكَانَهُۥ فَسَوْفَ تَرَىٰنِى ۚ فَلَمَّا تَجَلَّىٰ رَبُّهُۥ لِلْجَبَلِ جَعَلَهُۥ دَكًّۭا وَخَرَّ مُوسَىٰ صَعِقًۭا ۚ فَلَمَّآ أَفَاقَ قَالَ سُبْحَٰنَكَ تُبْتُ إِلَيْكَ وَأَنَا۠ أَوَّلُ ٱلْمُؤْمِنِينَ
Surah Al-A'raaf(7:143)