Well, the Hijri date 19 Rajab 1189 corresponds to the Gregorian date Thursday, 14 September 1775. This date lies in the seventh month of the Hijri year 1189 AH, which is Rajab of 1189 AH. Both this Hijri and Gregorian date occur on the single day that is Thursday without any doubt. The Arabic date 1189/07/19 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 14 September 1775 to its equivalent Arabic date.
The following is the conversion of the Arabic date 19 Rajab 1189 AH to its equivalent Gregorian date.
ضَرَبَ ٱللَّهُ مَثَلًۭا لِّلَّذِينَ كَفَرُوا۟ ٱمْرَأَتَ نُوحٍۢ وَٱمْرَأَتَ لُوطٍۢ ۖ كَانَتَا تَحْتَ عَبْدَيْنِ مِنْ عِبَادِنَا صَٰلِحَيْنِ فَخَانَتَاهُمَا فَلَمْ يُغْنِيَا عَنْهُمَا مِنَ ٱللَّهِ شَيْـًۭٔا وَقِيلَ ٱدْخُلَا ٱلنَّارَ مَعَ ٱلدَّٰخِلِينَ
Allah citeth an example for those who disbelieve: the wife of Noah and the wife of Lot, who were under two of Our righteous slaves yet betrayed them so that they (the husbands) availed them naught against Allah and it was said (unto them): Enter the Fire along with those who enter.
Surah At-Tahrim(66:10)