Well, the Hijri date 28 Rajab 1219 corresponds to the Gregorian date Thursday, 1 November 1804. This date lies in the seventh month of the Hijri year 1219 AH, which is Rajab of 1219 AH. Both this Hijri and Gregorian date occur on the single day that is Thursday without any doubt. The Arabic date 1219/07/28 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 1 November 1804 to its equivalent Arabic date.
The following is the conversion of the Arabic date 28 Rajab 1219 AH to its equivalent Gregorian date.
وَإِن كَانَ طَآئِفَةٌۭ مِّنكُمْ ءَامَنُوا۟ بِٱلَّذِىٓ أُرْسِلْتُ بِهِۦ وَطَآئِفَةٌۭ لَّمْ يُؤْمِنُوا۟ فَٱصْبِرُوا۟ حَتَّىٰ يَحْكُمَ ٱللَّهُ بَيْنَنَا ۚ وَهُوَ خَيْرُ ٱلْحَٰكِمِينَ
And if there is a party of you which believeth in that wherewith I have been sent, and there is a party which believeth not, then have patience until Allah judge between us. He is the Best of all who deal in judgment.
Surah Al-A'raaf(7:87)