Well, the Hijri date 28 Rabi Al Thani 1220 corresponds to the Gregorian date Thursday, 25 July 1805. This date lies in the fourth month of the Hijri year 1220 AH, which is Rabi Al-Thani of 1220 AH. Both this Hijri and Gregorian date occur on the single day that is Thursday without any doubt. The Arabic date 1220/04/28 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 25 July 1805 to its equivalent Arabic date.
The following is the conversion of the Arabic date 28 Rabi Al Thani 1220 AH to its equivalent Gregorian date.
مَا كَانَ لِلَّهِ أَن يَتَّخِذَ مِن وَلَدٍۢ ۖ سُبْحَٰنَهُۥٓ ۚ إِذَا قَضَىٰٓ أَمْرًۭا فَإِنَّمَا يَقُولُ لَهُۥ كُن فَيَكُونُ
It befitteth not (the Majesty of) Allah that He should take unto Himself a son. Glory be to Him! When He decreeth a thing, He saith unto it only: Be! and it is.
Surah Maryam(19:35)