Well, the Hijri date 28 Safar 1220 corresponds to the Gregorian date Monday, 27 May 1805. This date lies in the second month of the Hijri year 1220 AH, which is Safar of 1220 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1220/02/28 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 27 May 1805 to its equivalent Arabic date.
The following is the conversion of the Arabic date 28 Safar 1220 AH to its equivalent Gregorian date.
قُلْ أَمَرَ رَبِّى بِٱلْقِسْطِ ۖ وَأَقِيمُوا۟ وُجُوهَكُمْ عِندَ كُلِّ مَسْجِدٍۢ وَٱدْعُوهُ مُخْلِصِينَ لَهُ ٱلدِّينَ ۚ كَمَا بَدَأَكُمْ تَعُودُونَ
Say: My Lord enjoineth justice. And set your faces upright (toward Him) at every place of worship and call upon Him, making religion pure for Him (only). As He brought you into being, so return ye (unto Him).
Surah Al-A'raaf(7:29)