Well, the Hijri date 15 Muharram 1197 corresponds to the Gregorian date Friday, 20 December 1782. This date lies in the first month of the Hijri year 1197 AH, which is Muharram of 1197 AH. Both this Hijri and Gregorian date occur on the single day that is Friday without any doubt. The Arabic date 1197/01/15 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 20 December 1782 to its equivalent Arabic date.
The following is the conversion of the Arabic date 15 Muharram 1197 AH to its equivalent Gregorian date.
فَتَوَلَّىٰ عَنْهُمْ وَقَالَ يَٰقَوْمِ لَقَدْ أَبْلَغْتُكُمْ رِسَٰلَٰتِ رَبِّى وَنَصَحْتُ لَكُمْ ۖ فَكَيْفَ ءَاسَىٰ عَلَىٰ قَوْمٍۢ كَٰفِرِينَ
So he turned from them and said: O my people! I delivered my Lord's messages unto you and gave you good advice; then how can I sorrow for a people that rejected (truth)?
Surah Al-A'raaf(7:93)