Well, the Hijri date 28 Dhul Qidah 1180 corresponds to the Gregorian date Sunday, 26 April 1767. This date lies in the eleventh month of the Hijri year 1180 AH, which is Dhu Al-Qidah of 1180 AH. Both this Hijri and Gregorian date occur on the single day that is Sunday without any doubt. The Arabic date 1180/11/28 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 26 April 1767 to its equivalent Arabic date.
The following is the conversion of the Arabic date 28 Dhul Qidah 1180 AH to its equivalent Gregorian date.
ٱسْتَغْفِرْ لَهُمْ أَوْ لَا تَسْتَغْفِرْ لَهُمْ إِن تَسْتَغْفِرْ لَهُمْ سَبْعِينَ مَرَّةًۭ فَلَن يَغْفِرَ ٱللَّهُ لَهُمْ ۚ ذَٰلِكَ بِأَنَّهُمْ كَفَرُوا۟ بِٱللَّهِ وَرَسُولِهِۦ ۗ وَٱللَّهُ لَا يَهْدِى ٱلْقَوْمَ ٱلْفَٰسِقِينَ
Ask forgiveness for them (O Muhammad), or ask not forgiveness for them; though thou ask forgiveness for them seventy times Allah will not forgive them. That is because they disbelieved in Allah and His messenger, and Allah guideth not wrongdoing folk.
Surah At-Tawba(9:80)