Well, the Hijri date 29 Safar 1222 corresponds to the Gregorian date Thursday, 7 May 1807. This date lies in the second month of the Hijri year 1222 AH, which is Safar of 1222 AH. Both this Hijri and Gregorian date occur on the single day that is Thursday without any doubt. The Arabic date 1222/02/29 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 7 May 1807 to its equivalent Arabic date.
The following is the conversion of the Arabic date 29 Safar 1222 AH to its equivalent Gregorian date.
إِنَّ ٱلَّذِينَ تَوَلَّوْا۟ مِنكُمْ يَوْمَ ٱلْتَقَى ٱلْجَمْعَانِ إِنَّمَا ٱسْتَزَلَّهُمُ ٱلشَّيْطَٰنُ بِبَعْضِ مَا كَسَبُوا۟ ۖ وَلَقَدْ عَفَا ٱللَّهُ عَنْهُمْ ۗ إِنَّ ٱللَّهَ غَفُورٌ حَلِيمٌۭ
Lo! those of you who turned back on the day when the two hosts met, Satan alone it was who caused them to backslide, because of some of that which they have earned. Now Allah hath forgiven them. Lo! Allah is Forgiving, Clement.
Surah Aal-i-Imraan(3:155)